ATLANT. DEEP-SEA EXPED. 1910. VOL. 111]. 



MURAENOID LARVAE 



1 



Number 







Number 





Name 



of 

 segments 



Authority 



Name 



of 



segments 



Authorty 



Gymnothorax unicolor de la Roche 



134 



Jord. a. Dav. (21) 



Leptocephalus latus E. and K 



133 



Eig. a. Kenn. (9) 





135 



Gunther (19) 



Histiobranchi infer- 









136—140 



GUNTHER (19), 



nalis or Ilyophidis . . 







moringa Cuv 



"Conger marginatus Val 





Grassi (16) 



Brunnei 



133-134 



Autor 



141 



Jord. a. Dav. (21) 

 (21) 



splendens 



135 





142 



— l ) acus Garm 



135 



Garman (12) 





144 



Gunther (19) 



Gilli E. a. K 



137 



Eig. a. Kenn. (9) 





145 



(19) 



V cinctus Garm 



138 



Garman (12) 



*Ophichthys frontalis Garm 



149 



AUTOR 





140 



- (12) 



* 'Xenotnystax rictus Garm 



154 



Gunther (19) 

 Garm an (12) 





141 



Eig. a Kenn. (9) 

 Schmidt (26) 



Gordiichthys irretitus Jord. a. Davis 



157 



tliorianus Schm.. . . 



142 





173 



(12) 



— 2 ) Morrisii E. a. K 



142 



Eig. a. Kenn. (9) 





225 



Jord. a. Dav. (21) 



mucronatus E. a. K.. 



144-147 



0) 



III. Larval forms, not identified. 







megacara 



149—150 



Autor 













about 153 



Garman (12) 





110 



AUTOR 



ingolfianus Schm. . . . 



153—155 



Schmidt (28) 



— Holti Schm 



112 



Schmidt (26) 



discus E. a. K 



155-159 



Eig. a. Kenn. (9) 



diptychus E. and K. . 



122 



Eig. a. Kenn. (9) 



lanceolatus Stromm. . 



158—163 



Blegvad (1) 



euryuras 



116—117 



Autor 



enchodon 



158 



Autor 



* J ) obtusus Garm 



119 



Garman (12) 



hum His E. a. K 



157—162 



Eig. a. Kenn. (9) 



dentex Cantor 



about 120 



Collett (6) 



l ) lychnus Garm 



165 



Garman (12) 





119—123 



Eig. a. Kenn. (9) 



Gilberti E. a. K 



180 



Eig. a. Kenn. (9) 



— ') dentatus Garm 



121 



Garman (12) 



Hjorti Blegvad 



182 



Blegvad (1) 



amphioxus E. and K. 



122 



Eig. a. Kenn. (9) 





188—191 



Schmidt (26) 





125 



Autor 





190 



Autor 



Michael-Sarsi 



127 



— 





200-220 



— 



caudomaculatus Eig. 



133 



Eig. a. Kenn. (9) 



stylurus 



218—229 

 > 240 



Schmidt (26) 



latissimus Schm 





about 127 



Autor 



Andreae Schm 



about 250 



(28) 



* l ) cingulus Garm 



131—133 



Garman (12) 





„ 250 



Garman (12) 



dolichorhynchus 



128-136 



Autor 



polymerus 



„ 443 



Autor 



The number of vertebrae in Gastrostomus Bairdii 

 has been included in the above table, although it is not 

 generally referred to the order Apodes, because our ma- 

 terial contains a larva not yet fully metamorphosed having 

 an unmistakable likeness to a muraenoid larva. 



This table shows that in the majority of the species 

 belonging to the order Apodes the number of vertebrae 

 varies between 100 and 150, and there are about 27 

 species of leptocephalids in which the number of seg- 

 ments falls within these limits. 



Before describing the various species I wish to ex- 

 plain some abbreviations and other points in the de- 

 scriptions. 



Instead of giving details regarding geographical 

 position, etc., I have merely indicated the numbers of the 

 stations, the table at the end furnishing full information 

 regarding this. 



All larvae were taken in nets or pelagic trawls drag- 

 ged horizontally, and as a rule ten nets were attached at 



intervals to the wire and hauled simultaneously for long 

 periods. It may be supposed, that a net when dragged 

 horizontally, will go in a distance from the surface of 

 about half the length of wire between net and ship. 

 Thus when in the tables a larva is said to have been 

 taken at a depth of 50 metres, it signifies that it was 

 captured by a net with 100 metres of wire out. 



The following abbreviations occur in the tables: — 

 Head = Length of head measured from point of snout 



to beginning of side line. 

 Snout = Distance between point of snout and the ante- 

 rior margin of the eye. 

 Eye = Largest diameter of the eye. 

 Anus — Distance between point of snout and anus. 

 Dorsal = Distance between point of snout and first inter- 



spinous element in the dorsal fin. 

 Height = Greatest height. 

 Hj — Highest (dorsal) hypural. 



H 2 = Lowest (ventral) hypural. 



') Garman has adopted the name Atopiclithys instead of Leptocephalus which he applies on the genus Conger. 

 -) This species is not L. Morrisii (L. Congri vulgaris), which has more than 150 segments; consequently it ought to be renamed, 

 and 1 propose to call it L. Eigenmanni. 



