Jordan and Evermann, — Fishes of North America. 2703 



each other. The gill opening is reduced to a very small slit, the gill mem- 

 brane being attached to the sides of the throat. The dorsal fin com- 

 mences ou the extremity of the snout and terminates at the root of the 

 caudal, its raya are simple, and each is accompanied by a series of very 

 small ctenoid scales; the longest rays are not quite \ as long as the head, 

 and occupy the middle and the third quarter of the fin. Caudal quite free, 

 as long as the head, somewhat pointed. The right ventral appears as a mere 

 continuation of the anal; the left is reduced to 2 minute rays near the 

 vent. Tbe scales ou both sides are ctenoid, those on the neck and on the 

 chin being twice the size of those on the body. Color uniform brownish 

 gray. Coast of Surinam and Brazil. The above description from Giin- 

 ther, taken from the type of Soliotaljia unicolor. A specimen (No. 4677, 

 M. C. Z.), from Obydos, Brazil, examined by us, differs in coloration, being 

 pale brown, the body and fins profusely covered with round, dark spots 

 of varying sizes, the largest as wide as from eye to eye. Head 41; depth 

 2|. D. 78; A. 56; scales 100; V. 2. Eyes reduced to points, the upper in 

 advance of lower, near middle of length of head ; gill oxienings small, sub- 

 equal; right ventral beginning at the chin, continuous with anal; dorsal 

 and anal slightly connected with caudal. Steindachner gives D. 72; A. 

 53; scales 95. Color brownish, mottled with darker spots. Probably 

 Gilnther's specimen is faded, (unicolor; one-colored.) 



Apionichthys dumerili, Kaup, Arcliiv fur Naturgesch. 1858, 104, no locality; no descrip- 

 tion. 



Holeotalpa unicolor, Gunther, Cat., iv, 489, 1862, AVest Indies. (Coll. Scrivener.) 



Apionichthys nebidosus, Peters, Berliner Monatsbericbte 1869, 709, Surinam. 



? Apionichthys bleekeri, Horst, Kederl. Tydsclir. Dierk., iv, 30, 1878, locality unlinown; 

 specimen in Mus. Utrecht. (Description not seen by iis.) 



Apionichthys unicolor, .Jordan, Proc. U. S. Nat. Mus. 1880, 603. 



Apionichthys dumerili, Bleeker, Nederl. Tydscbr. voor Dierkunde, ir, 1865, 305; Stein- 

 dachner, Ichth. Beitr., vni, 48, 1878. 



1056. GYMNACHIRUS, Kaup. 



Gymnaehirus, Kaup, Uebersicbt der Soleinse, Archiv fur Naturgesch. 1858, 101 (nudus). 



This genus differs from Achh-us in the absence of scales; the dorsal and 

 anal are free from the caudal. Brazil, (yv/nvo';, naked; Achirus.) 



3077. GYMNACHIRUS FASOIATUS, Giinther. 



Head4i; depth 1^. D. 68; A. 50; pectoral of right side present, very 

 small, of 2 rays, ^ length of eye; jaws hidden in thick skin; lips and left 

 side of head covered with fringes. Gill opening not extending upward as 

 far as pectoral; vertical fins in thick skin. Olive, with 14 brown cross 

 bands as broad as the interspaces, all extending on dorsal and anal, the 

 first across snout, the second and third across eye; caudal with 3 brown 

 bands. (Giinther.) Locality unknown, probably Surinam or Brazil; a 

 related species {G. nudus, Kaup; no pectoral fins. D. 51; A. 42), being 

 described from Bahia. (faseiatus, banded.) 



Oymnachirus fasciatus, Gunther, Cat., iv, 488, 1882, locality unknown ; Jordan & Goss. 

 Eeview Flounders and Soles, 317, 1889. 



