Fig. 29 — Hygophum atratum, male, 41.6 mm. From Becker (1965, p. 88. fig. 8). 



Description 



D. 12 (11-14); A. 19-20(18-21); P. 13-14 (12-15); AO 6 (5-7) + 5-6 (4-7), total 11 (10-13); gill 

 rakers 4-5 (6) -I- 1 + 14-15 ( 13-16), total 20-21 (19-22); vertebrae 36 (37-35). 



Body moderately slender, its greatest depth about 5 in SL. Origin of pectoral base high, 

 about level with center of pupil. Two or 3 AOp over anal base. SAO, usually over midpoint of 

 VOj.) interspace but sometimes over V0:(. Upper jaw extends well behind hind margin of orbit. 

 Upper Pol under adipose base. 



Supracaudal glands of males undivided, short, extending over only about one-third of the 

 supracaudal space (Fig. 29); infracaudal glands of females with 2 to 4 small, rounded scales 

 lying between last AOp and first Pre (Fig. 28). 



Size: To about 60 mm. 



Least depth of capture: At surface at night. 



Distribution: Hygophum atratum is confined to the eastern Pacific Ocean, primarily be- 

 tween 15° and 30° N and into the Gulf of California (Fig. 25). The westward range beyond 120° 

 W is uncertain; the few captures may represent strays. 



Hygophum reinhardtii 



(Lutken, 1892) 



Fig. 30 — Hygophum reinhardtii, female, 44..') mm. 



Description 



D. 14(13-15); A. 23 (21-25); P. 14 (13-15); AO 7 (5-8) -h 7 (6-9), total 14 (11-16); gill rakers 4 

 (5) -h 1 -I- 13 (12-14), total 18 (17-20); vertebrae 39 (38-40). 



36 



