On a neic Species of hy conns. -iSii 



Artihtus nainis^ sp. n. 



Allied to A. turpis, with which species it shares all essen- 

 tial craiiiiil and dental character.s (see above), but readily 

 distin^uisliod by its conspicuously smaller size. Lenj^th of 

 skull, inion to front of canines, 1.S-2-1S-7 ; maxillary tooth- 

 row 5-8-6-1 ; forearm 36-5-38 ; third metacarpal 32-2-35 mm. 



2'i/pe. — ? ad. (ale). Tierra Oolorada, Sierra Madre del 

 Sur, Guerrero, Mexico. Collected by Mr. II. H. Smitli. 

 Presented by Messrs. O. Salvin and F. UuCane Godman. 

 Brit. Mus. no. 80. 1. 30. 5. 



Raneje. — 12 specimens (5 skulls) have been examined from 

 the States of Guerrero, Colima, Sinaloa, and Vera Cruz, 



Mexico. 



LXII. — On a neio Sjyeci'es o/Lvconus from the North-east 

 Atlantic. By E. W. L. lioLT and L. W. Byrne. 



The genus Li/conus originally described by Giinther [1887], 

 and by him made the sole genus of his family Lyconida>, 

 was regarded by that author as allied to the Macruridae but 

 of a more generalized type. Regan [1903] has joined 

 Lyconus with Duthygadus and other genera in iiis subfamily 

 Bathygadinaj of the Macruridae ; and Boulenger [1904] has 

 also placed the genus in the neighbourhood of Bathygadus 

 in the family Macruridse. So far as can be judged from 

 such anatomical details as are discernible on a superficial ex- 

 amination, Lyconus certainly appears to be closely allied to 

 Bathygadus. 



The genus has hitherto been known from a sinode 

 specimen from the South Atlantic, the type of Lyconus 

 pinnaius, (irthr. It is defined by Giinther as possessing one 

 canine-like tooth on each side of the vomer ; but to admit 

 the form described below the vomerine dentition should be 

 described as consisting of one or more teeth on each side. 



Another Lyconus was taken by the S.S. * Helga ' on the 

 .5th August, 1906, at Station S. R. 352 off the south-west of 

 Ireland, between 50° 21' N., 11° 30' W., and 50° 21' K., 

 11° 41' W., at soundings of 800 fath., in a Petersen pelagic 

 otter-trawl tished on 800 fath. of warp. The depth at whicli 

 the net chiefly worked is computed at 700 to 750 fath., but 

 though it showed no sign of having actually touched bottom, 



