316 Mil C. TATE REGAN ON THE 



MYCTOPHID^;. 



10. Myctophum antarcticum, Giinth. 

 Specimens were taken at : 



Station 309, 63 51' S., 41 50' W., 2300 fathoms; temperature 31 "05 F. ; 



trawl ; 16th March 1903. 

 Station 414, 71 50' S., 23 30' W., 0-1000 fathoms; surface temperature 



29-1 F. ; vertical net; 15th March 1904. 

 Station 422, 68 32' S., 12 49' W., 0-800 fathoms; surface temperature 



327 F. ; temperature at 800 fathoms 32'4; vertical net ; 23rd March 1904. 



1 1 . Lampanyctus braneri, Lonnberg. 



One specimen was taken at Station 420, lat. 69 33' S., 15 19' W., 2620 fathoms, 

 by the trawl, on 21st March 1904; temperature 31 '5 F. The species was previously 

 known only from the type. 



ALEPIDOSAURID.E. 



Eugnathosaurus, gen. nov. 



Skull very elongate and strongly compressed, with the upper surface somewhat 

 convex, bearing a fairly prominent median ridge. Snout and lower jaw much produced, 

 each ending in a fleshy appendage, ; lower jaw projecting beyond upper ; suspensorium 

 directed obliquely forward. Teeth pointed, uniserial ; prasmaxillary teeth minute ; 

 mandibulary teeth sub-conical, erect or somewhat retrorse, strongest in the middle of 

 the length of the jaw, more spaced posteriorly ; palatine teeth strong, compressed, 

 curved somewhat forward. 



12. Eugnathosaurus vorax, sp. n. 



The type of this remarkable new genus and species is a head, measuring 150 mm. 

 in length from tip of snout to end of operculum, taken in the trawl on 1 8th March 1904, 



FIG. 1. Eiignalhii.viurus vorax. 



at Station 417, in lat. 71 22' S., long. 16 34' W., off Coats Land, at a depth of 1410 

 fathoms, by the trawl ; temp. 31 - 9 F. That it is related to Alepidosaurns is evident, 



(ROY. soc. EDIN. TRANS., VOL. XLIX., 234.) 



