316 MR C. TATE REGAN ON THE 



MYCTOPHID.E. 



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 braueri, Lcinnberg. 



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^:. 



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 ; praemaxillary 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 18th March 1904, 



FIG. 1. Ewgnathosaunts 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 Alepidosaurits is evident, 



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



