42. SCOPELID^ MYCTOPHUM. 
28 i 
464. s. iMCioceps (Ayres) Gill. 
Olive-brown above, grayish below, with some golden lustre on sides; 
back with slaty reticulations; head not vermicnlated above; lower side 
of head and ventral tins yellow. Eye 5 in head. Scales arranged in 
regular, very oblique rows; those on the opercles in about 8, on the 
cheeks in about 9 rows; 40-50 scales along the back before the dor- 
sal, 0 in a vertical row between adipose fin and lateral line, and 10 in 
an oblique row. Pectoral fin longer, reaching base of ventrals, its 
length about equal to that of the premaxillary. Ventral tin not so long 
as the si)ace between snout and upper edge of gill-openiiig. Interor- 
bital space little concave, nearly smooth. Head 4; depth 8J. D. 11; 
A. 12; B. 14; scales 13-CG-lG (the vertical series counted obliquely). 
L. 12 inches. San Francisco to Mexico; rather common in summer. 
{Saarits lucloceps Ayres, Proc. Cal. Acad. Nat. Sci. 1855, 6G: Saunis litcioceps GiiutLer, 
V, o97.) 
**Body ratlier stout; suout sliort, obtuse, shorter than eye; lower jaw the longer. 
( Traehinoceplialus Gill.*) 
465. §. BBjyops (Forster) Jor. & Glib. 
Grayish, mottled or barred; scapula black. Body moderately elon- 
gate, tapering backwards. Mouth very large, maxillary more than half 
length of head; snout shorter than eye ; lower jaw somewhat projecting; 
top of head corrugated; interorbital space concave. Anal tin compara- 
tively long. Ventral tins very long, reaching about to the vent. Head 
3| in length; depth about 5. D. 11; A. 14; scales 4-58-7. Tropical 
seas; not common on our South Atlantic coast. 
{Salmo myops Forster, MSS. Bloch & Schneider, 421 : Saiirits myops Giinther, v, 398.) 
13a.— MYCTOFSaUM Rafinesque. 
(Sco2)elus Cuvier, 1817.) . 
(Rafinesque, Indice d’lttiologia Siciliana, 1810: typo Myctophum punctatinn Raf.) 
Body oblong, compressed, covered with large cycloid scales, those of 
the lateral line sometimes enlarged. A series of round luminous spots 
along the lower side of the head and body. Head compressed. Mouth 
large, the jaws usually about equal; premaxillary very long, slender; 
maxillary well developed. Teeth in villiform bands on jaws, palatines, 
pterygoids, and tongue. Eye large. Gill-rakers very long and slender. 
Brancliiostegals 8-10. Pseudobran chi<e large. Air-bladder small. Py- 
*Gill, Cat. Fish. East Coast N. Anicr. 1861, 53, no description: tyj)e Salmo myops 
Forster. (Tpaxiyoi, Trachinus; jisipaXi), head.) 
