1340 Bulletin 4.7, United States National Museum. 



modestum, said to be rare on the whole coast of Peru, seems to belong to 

 this species. (From Cantharus (= Spondylisoma) , a genus of sparoid fishes, 

 which this species remotely resembles.) 



Pristipoma cantharinum, JENYNS, Voyage Beagle, Fishes, 49, 1842, Galapagos Islands. 



(Coll. Charles Darwin.) 



* Hcemulon modestum, TSCHUDI, Fauna Peruana, 11, 1844, Peru. 



Orthopristis cantharinus, JORDAN & FESLER, L c., 500. 



Subgenus EVAPRISTIS, Jordan & Evermann. 

 1713. ORTHOPRISTIS LETHOPRISTIS, Jordan & Fesler. 



Head3i; depth 3. D.XII, 14; A. Ill, 11; scales 8-65-15 ; maxillary 3 in 

 head; eye 4f ; preorbital 3f; pectoral If 1 ,, ; snout 2; spinous dorsal 2| ; 

 second anal spine 6; longest anal ray 3; base soft dorsal in spinous 1. 

 Body rather elongate, in form intermediate between Isaciella brevipinniv 

 and O. chalceus; back elevated and compressed, especially anteriorly, 

 profile regularly rounded; mouth larger than in any other species of 

 Orthopristis; maxillary shorter than snout; jaws subequal; teeth small, 

 the outer above longer, slender and close set; maxillary not reaching to 

 opposite front of eye; gill rakers of moderate length, a little shorter than 

 pupil, X-j-14; snout long, moderately sharp; eye moderate; preorbital 

 broad; preopercle strictly entire; series of scales on soft dorsal and anal, 

 a row close behind each ray, as in Isaciella; scales of body without acces- 

 sory scales. Dorsal fin rather deeply notched, spines low and slender; 

 soft dorsal low, highest toward the front; anal long and rather low, with 

 straight free border; anal spines graduated, the third scarcely half height 

 of first ray; pectoral falcate, rather long; caudal deeply forked. Color 

 dark gray, not silvery ; center of each scale dark, these spots forming con- 

 tinuous streaks along the rows of scales, those below the lateral line rather 

 less distinct ; fins rather dark ; opercular membrane and axil dusky. Gala- 

 pagos Archipelago; known only from the original type (26947, M. C. Z.), 

 15 inches long, from the Galapagos Islands. (ArfOojuai, to forget; 

 used for Ttpidrys, a saw; in reference to the entire preopercle.) 



Orthopristis lethopristis, JORDAN &. FESLER, Proc. Ac. Nat. Sci. Phila. 1889, 36, Galapagos 

 Islands ; JORDAN & FESLER, I. c., 500. 



547. ISACIELLA, Jordan & Fesler. 



Isaciella, JOBDAN & FESLER, Review of the Sparoid Fishes of America and Europe, 497, 

 1893 (brevipinnis) . 



This genus is close to Orthopristis, from which it diifers chiefly in the 

 presence of small accessory scales at the base of the scales of the body. 

 The form is somewhat peculiar, approaching that of Micro lepidotus; the 

 fins are very low and the soft dorsal and anal are scaly. One species 

 known. (Diminutive of Isacia, a related genus which has no groove at 

 the chin; Isacia is from the Japanese name Isaki.) 



* Head 3| in total ; depth 4. D. XIII, 16; A. Ill, 13; maxillary not quite reaching eye; 

 second anal spine longer and thicker than third. Hlackish gray, paler below. Entire 

 coast of Peru. Scarce. Length 11 inches. (Tschudi.) 



