452 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 50. 



INotothenia squamifrons Vaillant, Mission Sci. Cap Horn, vol. 6, Zoologie, 1. 

 Poissons, 1891, p. 24. Orange Bay. 



Nolothenia wiltoni Regan, Scottish Antarctic Exped., Trans. Royal Soc. Edin- 

 burgh, vol. 49, pt. 2 (No. 2), 1913, p. 268, pi. 7, figs. 2, 2a. Orange Bay, Straits 

 of Magellan, Port Stanley, and Port Williams (Falklands), and on Biirdwood 

 Bank. 



Description of numerous specimens (nearly 75) from Albatross sta- 

 tion 2787, at Otter Bay, Smyth Channel; Sandy Point, Laredo Bay, 

 and Port Churruca in the Straits of Magellan; Port Grapplor, Pata- 

 gonia; Albatross station 2770, near Hilly Point and Cape Watchmap, 

 on the east coast of Patagonia, and station 2771 near Capo Virgins, 

 in 50 fathoms. The measurements in parentheses of the extremes 

 of variation were taken from 30 specimens. The typical specimen 

 is 250 mm. in total length: 



Head 3J (0.29 to 0.31) in body length; depth 5i (0.15 to 0.21) in 

 same; eye 4 in head (0.07 to 0.11) ; snout 3^ (0.07 to 0.08) ; maxillary 

 2§ (0.095 to 0.12) ; mandible 2f (0.105 to 0.12) ; width of interorbital 

 space 6 (0.035 to 0.05) ; length of pectoral If (0.18 to 0.22) ; of ven- 

 tral 1§ (0.17 to 0.21); depth of caudal peduncle 4 in head (0.07 to 

 0.08) ; length of combined dorsal bases 1| in body (0.64 to 0.67) ; of 

 anal base 2 (0.47 to 0.52) ; D. VI (very rarely VII) , 35 (34 to 36) ; A. 33 

 (31 to 34); pectoral rays 26 (24 to 26); scales with pores in upper 

 lateral line 49 (47 to 53) ; in lower lateral line 7 to 17; in longitudinal 

 series 75 (69 to 78) ; in transverse from origin of anal obliquely upward 

 and forward 21 (20 to 22) ; between insertion of dorsal and line of 

 occiput 12 (10 to 15) ; gill rakers 10+17 (22 to 32). 



Head somewhat cottoid in shape, its width equal to depth at 

 opercles; interorbital space flat, its width always less than vertical 

 diameter of orbit; eyeball exposed and colored above; width of lip 

 and maxillary nearly equal to width of suborbital; velar flap from 

 tip of lower jaw less than half eye; jaws ntsarly equal; maxillary ex- 

 tending to below anterior fourth of eye; teeth small, anteriorly in a 

 band 4 or 5 series wide above; 3 or 4 series below, outer row enlarged 

 slightly, but a single series present laterally in cither jaw. 



First dorsal inserted slightly before pectoral base; distance between 

 last ray and first of second dorsal twice that between two spines; 

 depth of caudal peduncle slightly less than distance from last dorsal 

 ray to last of muscular portion of peduncle; distance between last 

 anal ray and caudal fin three-fourths depth of peduncle; longest 

 dorsal spine 2| in head (in adult), fle:<cible at tip; dorsal rays sub- 

 equtil throughout, 2^ in head; antd similar, length of rays equal to 

 snout; pectoral rounded; ventrals reaching to or nearly to anus; 

 caudal rounded. 



Upper latertd line extending nearly to caudal fin, lower usually 

 much overlapped by upper. 



