1562 Bulletin 4.7, United States National Museum. 



Jaguacaguare, MARCGRAVE, Hist. Brazil, 1648, Brazil. 



Chcetodon cauda bifurca,fasciis 5-albis, LINNAEUS, Mus. Adolph. Frederici, I, 64, "India." 



Chcetodon saxatilis, LINNAEUS, Syst. Nat., Ed. x, 276, 1758; after Mus. Ad. Fr. ; Ed. xn, 



466, 1766. 

 Chcetodon mauritii, BLOCK, Ichthol., in, 213, pi. 109, 1785, Brazil; on a bad drawing by 



Prince MAURICE. 

 Chcvtodon marginatus, BLOCK, Ichthol., m, 98, pi. 207, 1787, Martinique; on a drawing by 



PLUMIER. 



Glypliisodon moucharra, LACEPEDE, Hist. Nat. Poiss., iv, 542, 1803, Brazil, etc.; after va- 

 rious authors. 

 Cha-.todon sargoides, LACEPEDE, Hist. Nat. Poiss., iv,453, 1803, Martinique; on a drawing 



by PLUMIER. 

 Glypliidodon troschelii, GILL, Proc. Ac. Nat. Sci. Phila. 1862, 150, Cape San Lucas (Coll. 



JohnXantus); GUNTHER, Cat., iv, 36, 1862; GILL, Proc. Ac. Nat. Sci. Phila. 1863, 220. 

 Glypliidodon saxatilis, CUVIER & VALENCIENNES, Hist. Nat. Poiss., v, 446, 1830, GUNTHER, 



Cat., iv, 35; JORDAN & GILBERT, Proc. U. S. Nat. Mus. 1882, 366 and 377; JORDAN, Proc. 



U.S. Nat. Mus. 1884, 134. 



Subgenus EUSCHISTODUS, Gill. 

 1974. ABUDEFDTJF DECLIVIFRONS (Gill). 



Head 3J-; depth 2. D. XIII, 12; A. II, 10; eye 3 in head, equal to snout 

 in the adult; pectorals equal to head; longest dorsal spine 2; second anal 

 spine 2^ ; scales 3-28-9. Body compressed, hack much elevated, anterior 

 profile convex, very steep, steepest from front of eye to margin of upper 

 jaw; the rather hroad preorhital usually wider than pupil, especially in 

 the adult; snout hluntish; mouth small, maxillary not reaching vertical 

 from front of^ye, preopercle and suhorhital with entire edges; preorbital 

 unusually hroad, growing broader with age. Diameter of eye greater 

 than the length of the snout in the young 2 inches long, equal to ifc in 

 examples 4 inches long; dorsal spines increase in length to 3 and 4 inches, 

 then decrease to last spine; soft dorsal and anal with median rays moder- 

 ately produced, longest dorsal ray If in head, longest anal slightly longer. 

 Gill rakers not very closely set, about 16 below the angle; pectorals 

 scarcely reaching tips of ventrals, which reach slightly past vent. Color 

 comparatively dull and plain ; greenish olive, mottled with light and dark ; 

 head and all of the fins except pectoral darker; 6 or 7 rather broad, dark 

 vertical bars on sides of body, extending on dorsal fin, usually 6 before 

 caudal peduncle, these less distinct than in A. saxatilis, growing obscure 

 with age; base of each scale on lower of body with a pale spot, these 

 forming faint, indistinct longitudinal bands; upper part of base of pecto- 

 ral with a conspicuous black spot, a good diagnostic mark, varying in 

 size, largest in older individuals ; no blue, yellow, or red in life. Length 4 

 inches. Pacific coast of tropical America; abundant in rock pools, espe- 

 cially about Mazatlan, where the specimens here described were taken. 

 (declivis, steep; frons, forehead.) 



Euschistodus declivifrons, GILL, Proc. Ac. Nat. Sci. Phila. 1862, 146, Cape San Lucas 



(Coll. Xaiitus) ; GILL, Proc. Ac. Nat. Sci. Phila. 1863, 220. 



Glyphidodon declivifrons, JORDAN & GILBERT, Proc. U. S. Nat. Mus. 1882, 366 and 377. 

 Abudefduf declivifrons, JORDAN, Fishes of Sinaloa, in Proc. Cal. Ac. Sci. 1895, 476. 



