ATLANT. DEEP-SEA EXPED. 1910. VOL. III]. 



MURAENOID LARVAE. 



1N0. 



c bo 



3 ii 



c 



c 

 — - en 



r- ^ 



"a. oj 



"" E 



"SoE 



Se 



Height 



Dorsal 



An 



al 



Head 



Snout 



Eye 



Muscle-segments 



Stage of 

 development 



E 

 B 



o ~ 

 be 



o OJ 



B 

 B 



© c 



B 

 B 



° be 



o C 



B 

 B 



°be 



o c: 



°~i2 



E 

 E 



re 

 o <v 

 o -^ 



E 

 E 





D.ra 



"u5 ^ 

 ° E 



C3 



1 



64 



150 



40-5 



7-6 



19 



250 



62 



27-5 



68 



3-7 



9 



1-2 



32 



1-0 



27 



71 



46 



117 



Prelarva 



2 



64 



500 



48 



9-7 



20 



32-0 



67 



34-0 



71 



4-3 



9 



1-5 



35 



11 



26 



71 



44 



115 



« 



3 



53 ii 



50 



48 



11-3 



24 



30-5 



64 



33-0 



69 



4-3 



9 



1-3 



30 



1-1 



. 26 



71 



44 



115 



* 



4 



53 . 



50 



49.5 



11-0 



22 



320 



65 



350 



71 



4-6 



9 



1-5 



33 



1-1 



24 



72 



45 



117 



ti 



5 



62 . 



100 



49-5 



10-4 



21 



32-5 



66 



34-5 



70 



4-3 



9 



1-4 



33 



1-0 



23 



73 



42 



115 



„ 



6 



52 



50 



50 



9-2 



18 



350 



70 



34-5 



69 



4-2 



8 



1-3 



31 



1-0 



24 



70 



43 



113 



II 



7 



62 n 



50 



50 



9-4 



19 



32-5 



65 



35-5 



71 



4-6 



9 



1-4 



30 



11 



24 



72 



45 



117 



„ 



8 



62 . 



100 



51 



9-6 



19 



31-5 



62 



35-5 



70 



44 



9 



1-4 



32 



10 



23 



70 



44 



114 



M 



9 



62 , 



100 



51 



8-5 



17 



32-5 



64 



35-5 



70 



4-2 



8 



1-4 



33 



10 



24 



71 



46 



117 



„ 



10 



62 „ 



50 



52 



9-5 



18 



35-5 



68 



360 



69 



4-7 



9 



1-5 



32 



11 



23 



74 



45 



119 



„ 



11 



53 . 



50 



52-5 



9-6 



18 



340 



65 



37-0 



70 



4-3 



8 



1-3 



30 



1-0 



23 



74 



43 



117 



„ 



12 



62 „ 



50 



53 



9-5 



18 



34-5 



65 



38-0 



72 



— 



— 



— 



— 



— 



— 



74 



43 



117 



„ 



13 



62 , 



100 



54 



10-8 



20 



34-0 



63 



36-5 



68 



4-7 



9 



1-6 



34 



1-0 



21 



69 



47 



116 



n 



14 



53 . 



50 



54-5 



9-9 



18 



350 



61 



380 



70 



— 



— 



— 



— 



— 



— 



72 



45 



117 



, 



15 



62 . 



50 



55-5 



10-6 



19 



— 



— 



— 



— 



4-8 



9 



1-7 



35 



1-1 



23 



? 



? 



119 



„ 



16 



53 . 



300 



56 



10-5 



19 



37 



66 



39-5 



70 



4-7 



8 



1-4 



30 



1-0 



21 



74 



43 



117 



„ 



17 



62 . 



50 



56-5 



10-8 



19 



35-5 



63 



39-0 



69 



4-3 



8 



1-5 



35 



1-1 



26 



70 



48 



118 



„ 



18 



62 . 



50 



57 



1.1-3 



20 



35-5 



62 



38-5 



68 



4-9 



9 



1-5 



31 



1-2 



24 



70 



45 



115 



„ 



19 



62 , 



50 



57-5 



11-7 



20 



41-0 



71 



41 5 



72 



50 



9 



1-5 



30 



1-2 



24 



72 



43 



115 



„ 



20 



56 . 



50 



58-5 



10-3 



18 



36-0 



62 



40-5 



69 



4-7 



8 



1-5 



32 



11 



23 



68 



47 



115 



„ 



21 



56 . 



50 



60 



12-2 



20 



39-0 



65 



41-5 



68 



50 



8 



1-6 



32 



14 



28 



71 



46 



117 



„ 



22 



81 



150 



66 



121 



18 



430 



65 



45-5 



69 



4-5 



7 



1-6 



36 



10 



22 



69 



45 



114 



Fullgrown 



23 



88 



50 



66 



120 



18 



420 



64 



45-0 



63 



4-6 



7 



1-5 



33 



11 



24 



72 



44 



116 



„ 



24 



98 



150 



67 



14-0 



21 



43-0 



64 



47-5 



71 



4-9 



7 



1-5 



31 



1-2 



25 



72 



42 



114 



„ 



25 



98 



100 



63 



12-2 



18 



30-5 



45 



34-0 



50 



50 



7 



1-6 



32 



0-9 



18 



48 



67 



115 



Metamorph. 



26 



98 



100 



69 



12-9 



19 



25-5 



37 



310 



45 



5-0 



7 



1-3 



26 



0-9 



18 



43 



70 



113 



„ 



27 



98 



150 



70 



14 2 



20 



430 



61 



45-5 



65 



4-9 



7 



1-4 



29 



11 



22 



67 



50 



117 





28 



10 



100 



71 



131 



18 



450 



63 



48-5 



68 



4-7 



7 



1-5 



32 



1-0 



21 



70 



44? 



114? 



Fullgrown 



29 



98 



100 



71 



14-0 



20 



30-5 



43 



340 



48 



4-8 



7 



1-4 



29 



0-9 



19 



46 



68 



114 



Metamorph. 



30 



98 



100 



71 



14-0 



20 



32-0 



45 



35-5 



50 



4-8 



7 



14 



29 



0-9 



19 



52 



64 



116 



- 



31 



88 



150 



72 



13-7 



19 



460 



64 



50-0 



69 



4-4 



6 



14 



32 



10 



23 



72 



43 



115 



Fullgrown 



32 



98 



100 



72 



13-5 



19 



33-5 



48 



37-5 



52 



51 



7 



1-5 



29 



0-9 



18 



53 



61 



117 



Metamorph. 



33 



98 



150 



IT 



13-8 



19 



44-0 



61 



48-5 



67 



4-7 



7 



14 



30 



1-0 



21 



71 



46 



117 



Fullgrown 



34 



90 



150 



73 



14-3 



20 



■46-5 



64 



500 



69 



4-6 



6 



1-5 



33 



11 



24 



72 



43 



115 



M 



35 



38 



100 



73 



12-8 



18 



460 



63 



50-0 



69 



4-7 



6 



1-6 



31 



10 



21 



70 



46 



116 



„ 



26 



92 n 



150 



73 



14-5 



20 



47-0 



64 



50-0 



69 



4-9 



7 



1-6 



33 



1-0 



23 



73 



43 



116 



m 



37 



98 



100 



73 



14-0 



19 



330 



45 



38.5 



53 



4-7 



6 



14 



30 



1-0 



21 



53 



64 



117 



Metamorph. 



38 



91 



150 



74 



13-4 



18 



45-5 



62 



480 



63 



4-5 



6 



1-3 



29 



11 



24 



67 



48 



115 



n 



39 



90 



500 



75 



12-5 



17 



46-5 



62 



50-5 



67 



4-8 



6 



1-6 



33 



11 



23 



72 



43 



115 



Fullgrown 



40 



92 



50 



76 



13-6 



18 



48-0 



63 



52-5 



69 



4-6 



6 



1-5 



33 



10 



22 



71 



43 



111 



„ 



41 



98 



100 



76 



15-2 



20 



480 



63 



52-0 



68 



4-8 



6 



1-6 



33 



1-2 



25 



68 



46 



114 





42 



98 



100 



78 



15-3 



20 



51-0 



65 



54-5 



70 



4-7 



6 



1-6 



34 



1-2 



26 



72 



42 



114 



■ 



43 



90 



300 



79 



140 



18 



51-5 



65 



54-0 



68 



4-7 



6 



1-6 



34 



10 



21 



74 



45 



119 



» 



44 



9J 



500 



82 



13-3 



16 



53-5 



65 



56-5 



69 



4-9 



6 



1-5 



31 



1-4 



22 



71 



44 



115 



• 



are not so many of them, hardly more than 1 -1+5 

 + 7 in the upper jaw. True rays cannot be traced in the 

 pectoral fin, and rays are wanting on some of the inter- 

 spinous elements of the dorsal fins. It is only in the 

 largest "prelarva" that the first indications of rays can be 

 seen also on the anterior interspinous elements of the 

 vertical fins. We can see only some thirty rays posteriorly 

 in each of the vertical fins of the smallest larva; the 

 anterior interspinous elements of the vertical fins have 



no rays, but they are probably present in full number, 

 for the foremost ones which are but slightly developed, 

 are situated just as far forward on the body as they are 

 in the large larvae. Figs. 1 and 2 show the heads of the 

 smallest and largest prelarvae, the brain of the small larva 

 being simpler in shape. 



PI. I represents a full-grown larva and three prelarvae 

 (the largest, the smallest and an intermediate one). 



It is unnecessary to describe the full-grown larvae of 



