162 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 39. 



In 1877, Gill, in Baird's Annual Record of Science and Industry for 

 1876 (p. clxvii), noticed Steenstrup's then recently published mono- 

 graph on Anarrhichas, and concluded with the statement that "in 

 the extreme northern seas, and especially the Greenland waters, no 

 less than four species [of Anarrhichadids] are found, which represent 



two quite distinct types or sub- 

 genera, one {Anarrhichas proper) 

 containing two species {A. lupus 

 and A. minor), and the other 

 {LycicMhys) containing also two, 

 but less known species {A. lati- 

 frons and A. denticulatus) ^ 



This suggestion has been com- 

 pletely overlooked by all subse- 

 quent writers and Jordan and 

 Evermann have even associated 

 A. latifrons with A. minor in a 

 section (a h) contrasted with one 

 (a l h) including A. lupus, and 

 all those in a primary section 

 (a) contrasted with another (a 

 a) including A. lepturus and A. 

 orientalis. 



In view of such discrepancy 

 the present author appealed to 

 the curator in charge of the biological department of the U. S. National 

 Museum (Dr. F. W. True) to have skeletons made of representatives 

 of each of the genera. This has been done and the differences between 

 Anarrhichas as restricted and LycicMhys proved to be far greater 

 than were expected. The principal ones are here contrasted in 

 parallel columns. 



Fig. 7.— Blennius ocellaris, shoulder girdle. 



ANARRHICHAS. 



more or less blunt; 



I LYCICHTHYS. 



Teeth 

 I mostly acute or subacute; 



Intermaxillary 



very robust, nearly straight, about 6 in an 

 outer row, small and irregular in an 

 inner row, and a few intervening be- 

 tween rows; 



rather slender, curved, 4 to 8 in an outer 

 row, smaller (6-12) in an inner row; 



Mandibular 



4 large in front with blunt summits; 

 crowded and molar on sides; the ridge 

 of the dentary inflected and with lar- 

 gest teeth, the outer on the inflected 

 sides and smaller; 



4 to 8 slightly enlarged in front, curved 

 and with subacute summits; well sepa- 

 rated acute and biserial or uniserial on 

 sides; those of inner row sometimes 

 molar; the dentary ridge scarcely in- 

 flected; 



