592 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
Ill, 32; Lat. 1. 72. L. 10 inches. Coast of California, from Cape Men- 
docino sonthward; very abundant. 
{Uijperprosopon arpenlcum Gibbous, Proc. Acad. Nat. Sci. Pbila. 1854, 105: Htjper- 
prosopon arcuatum Gibbous, 1. c. 125: Hifpcrprosopon argentens aud arcuatus Gill, Proc. 
Acad. Nat. Sci. Pliila. 1862, 276: Bitrema arcuatum aud Ditrcma megalops Giiuther, iv, 
249: Ennichtltps megalops Girard, U. S. Pacilic R. R. Surv. Fisb. 197.) 
cc. Veutral lius not black. 
931. A. a^asslzi (Gill) J. A G. 
Greenish olive above; sides bright silvery; 5 or 6 short blackish ver- 
tical bars on the sides, these sometimes obsolete; a dusky patch above 
anal aud on the front part of anal fin; caudal reddish, dusky at tip; 
veutrals colorless. Body elliptic ovate, the profile nearly straight from 
the snout to above the occiput, there forming a slight angle, thence 
straightish to the base of dorsal ; veutral outline variable, sometimes 
strongly arched. Month small, very obliipie, the premaxillary on the 
level of the middle of the pupil, the maxillary scarcely reaching front 
of pupil. Eye half longer than the snout. Three rows of scales on 
cheek. Sixth dorsal spine highest, higher than the soft rays; pectorals 
falcate. D. IX, 25; A. Ill, 29; Lat. 1. CO. L. 8 inches. Coast of Cal- ’ 
ifornia; not generally abundant. 
{Thipcrprosopon arcuatus Alex. Agassiz, Proc. Bost. Soc. Nat. Hist. 1881, 125 (uot of 
Gibbous): Ilgperprosopon agassizii Gill, Proc. Acad. Nat. Sci. Pliila. 1862, 276.) 
aa. Pi’odle little depressed above tlie eyes ; month less oblique, the lower jaw not 
l)rojectiug; eye scarcely longer than snout. {Holconotus.*) 
932. A. rliodoterais (Agassiz) J. & G. 
Greenish above; sides silvery, profusely covered with spots and 
blotches of light orange-brown or coppery red, these mostly in the form 
of interrupted vertical bars; caudal, anal, and ventral fins bright red- 
dish, without black spots or markings. Body deeper, more elevated, 
aud less compressed than in the preceding species. Profile nearly 
straight from snout to dorsal. Month oblique, formiug an angle of 
about 45 degrees; premaxillary on the level of the lower edge of pupil; 
maxillary reaching just past front of pupil. Gill-rakers fewer and 
stouter than in the preceding species. Head 3f ; depth 2. H. IX or 
X, 20; A. Ill, 29; Lat. 1. 65. L. 1 foot. Coast of California; not very 
abundant. 
( FIolcoiiolus rliodoterus L. Agassiz, Amer. Jouru. Sci. Arts, 1854, 368: Holconotus rliodo- 
terus A. Agassiz, Proc. Bost. Soc. Nat. Hist. 1861, 132: Ennichtliys hcermanni Girard, 
II. S. Pac. R. R. Surv. Fish. 199: Bitrema rhodoterum Guuther, iv, 250.) 
no. Lower lip with a frcuum ; gill-rakers few, short. {Amphisiiclius.) 
^Agassiz, Amer. Jour. Sci. Arts, 1854, 367 : type Holconotus rhodoterus. (6/\«o5, fur- 
row ; rc5ro?, back.) 
