22 



EINAR LEA. 



[REP. OF THE "MICHAEL SARS" NORTH 



No. 



Station 



Length 

 mm 



Segments 



No. 



Station 



Length 

 mm 



Segments 



pre-anal 



post-anal 



total 



pre-anal 



post-anal 



total 



43 



51 



89 



119 



10 



129 



63 



51 



93 



125 



9 



134 



44 



„ 





120 



11 



131 



64 





„ 



? 



? 



136 



45 



D 





? 



? 



134 



65 



52 



„ 



122 



10 



132 



46 



52 





122 



10 



132 



66 





„ 



124 



10 



134 



47 



51 



90 



? 



? 



132 



67 



51 



94 



126 



10 



136 



48 



n 





? 



? 



131 



68 





„ 



? 



? 



134 



49 



„ 





123 



11 



134 



69 





„ 



125 



10 



135 



50 



„ 





121 



10 



131 



70 





„ 



124 



10 



134 



51 

 52 

 53 

 54 



52 

 51 



91 



122 

 122 

 121 

 125 



9 

 10 

 10 

 10 



131 

 132 

 131 

 135 



71 

 72 

 73 

 74 



52 

 51 



95 



124 

 125 

 123 

 125 



10 

 9 

 9 



10 



134 

 134 

 132 

 135 



55 



„ 





124 



10 



134 



75 





96 



120 



11 



131 



56 



„ 





121 



11 



132 



76 





„ 



? 



? 



135 



57 

 58 



■ 



92 



121 

 126 



10 

 9 



131 



135 



77 

 78 



■ 



» 



123 



? 



9 



? 



132 

 137 



59 



„ 





124 



10 



131 



79 





97 



124 



9 



133 



60 



52 





122 



10 



132 



80 





98 



? 



? 



132 



61 

 62 



51 



93 



123 



? 



11 



? 



134 

 131 



81 

 82 



• 



100 

 101 



122 



? 



11 



? 



133 

 136 



One larva, being damaged, is not entered in this table. 



racter so absolutely to the rest, that it cannot be regarded 

 as a different species, but must be looked upon as an 

 extreme or abnormal variant. 



The postanal segments number between 8 and 12 

 i. e. the anus is placed very near the tip of the tail (see 

 fig. 3, pi. III). 



Schmidt (29) estimates the number of muscle-segments 

 in this species at about 130, whereas our individuals average 

 133 segments, but Schmidt, who has examined individuals 

 from the Mediterranean, the northern central Atlantic, and 

 the Mexican Gulf, states that individuals from the Mid- 

 Atlantic Ocean have a few more segments than those 

 from the parts of the ocean close to land. 



All our individuals were taken in the surface waters 

 at two adjacent stations, 51 and 52, where the deep is 

 nearly 4000 metres, situated near the easternmost of 

 Schmidt's records for the larvae of this species, scattered 

 over the North Atlantic to the west of the Azores from 

 near Newfoundland on the north to the large West-Indian 

 Islands on the south. 



This species seems to be very common in the North 

 Atlantic. Schmidt informs us that in number this is "by 

 far the most important of all eel-larvae in our collections", 

 and StrOmman states that of this species, which he has 



described under the name of L. Eckmani "the museum 

 (in Upsala) possesses a particularly large number of 

 examples, collected in the Central Atlantic (altogether 

 451 individuals). 



8. Leptocephalus spinocadux n. sp. 



The single specimen of this species, taken at Stat. 

 67 in 400 metres, is represented on pi. Ill fig. 4. Length 

 121 mm, greatest height, near the anus, 11-5 mm. There 

 are 125 myomeres, 66 preanal, 95 postanal. Anus placed 

 far forward, 68 mm from point of snout. 



Head relatively small, distance from point of snout 

 to anterior margin of eye 1-6 mm, horizontal diameter 

 of eye somewhat less than 1 mm, largest diameter some- 

 what greater than 1 mm. 



Snout pointed, contour of jaws straight. The lower 

 jaw is defective, but it does not seem to have protruded 

 beyond the snout. The mouth cleft extends backwards 

 as far as the hinder contour of the lens of the eye. 



There are only two teeth, both in the upper jaw, 

 a big one in front and a very small one a little farther back. 



The gill-slit is placed just in front of the pec- 

 toral fin. 



