1562 Bulletin /7, United States National Museum. 



Jaguacaguare, Marcgeave, Hist. Brazil, 1648, Brazil. 



Ghoetodon cauda bifurca,fasciis b-albis, Linnaeus, Mus. Adolph. Frederici, i, 64, "India." 



Ohcetodon saxatilis, Linnaeus, Syst. Nat., Ed. x, 276, 1758; after Mus. Ad. Fr. ; Ed. xii, 



466, 1766. 

 Chcetodon mawitii, Block, Iclithol., in, 213, pi. lOD, 1785, Brazil; on a bad drawing by 



Prince Maurice. 

 Chcetodon marginatus, Bloch, Iclithol., in, 98, pi. 207, 1787, Martinique; on a drawing by 



Plumier. 

 Glyphisodon moncharra, Lacepkde, Hist. Nat. Poiss., iv, 542, 1803, Brazil, etc.; after va- 

 rious authors. 

 Chcetodon sargoides, Lac^.pede, Hist. Nat. Poiss., iv,453, 1803, Martinique; on a drawing 



by Plumier. 

 Glyphidodon troschelii, GiLL, Proc. Ac. Nat. Sci. Phila. 1862, 150, Cape San Lucas (Coll. 



JobnXantus); Gunther, Cat., iv, 36, 1862; Gill, Proc. Ac. Nat. Sci. Phila. 1863, 220. 

 Glyphidodon 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, ABUDEFIHIF DEOLIVIFBONS (Gill). 



Head 3i; 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 comiiressed, back much elevated, anterior 

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

 javr; the rather broad preorbital usually wider than pupil, especially in 

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

 from front of eye, prcopercle and suborbital with entire edges; preorbital 

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

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

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

 then decrease to last siiine; 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 lius except pectoral darker; 6 or 7 rather broad, dark 

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

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

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

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

 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 declivifron$, Gill, Proc. Ac. Nat. Sci. Phila. 1862, 146, Cape San Lucas 



(Coll. Xantus) ; Gill, Proc. Ac. Nat. Sci. Phila. 1863, 220. 

 Glyphidodon declivifrons, Jordan <fc Gilbert, Proc. U. S. Nat. Mua. 1882, 366 and 377. 

 Abtidffdttf declivifrons, Jordan, Fishes of Sinaloa, in Proc. Cal. Ac. Sci. 1895, 476. 



