Jordan: Fossil Fishes from Riacho Dock. 29 



The typo is a fine exainpU', Collector's N'linihtT 4, of which Collector's 

 Number 5 is the duplicate, eciually well preserved. In numerous others, 

 Collector's Numbers 5 to 23, also 26, 35, 36, 37, 39, 43, 44, 49, 70, 80, 81, 

 and 104, the whole or a part of the body is preserved. Other fragments 

 are Numbers 152 and 171. All arc of about the same size, and in all the 

 mouth seems to be small, though the shortness of the lower jaw in the type 

 may be in part due to "telescoping." Only one specimen, the type, shows 

 the ventral fins. 



Collector's Number 6 is fairly preserved, and shows the mouth closed, 

 the jaws subequal, the mouth apparently small. Number 7, w^ith two 

 specimens, shows the mouth small, the lower jaw projecting. The sides 

 show a few shining scales, thin and small. Number 9 and Number 20 show 

 a projecting chin, the mouth being small. Number 10 shows the mouth 

 much as in type. In all, the posterior ventral scutes are distinct. They 

 show none of the enlargements peculiar to Ellipes longicostatus (Cope). 

 In Number 21 the posterior scutes are broadened, but not much enlarged. 



Ellipes longicostatus Cope. 



Diplomystus longicostatus Cope, Proc. Amer. Phil. Soc XXIII, 1886, 3 (Upper 

 Cretaceous, Bahia, Brazil). — Woodward, Ann. Mag. Nat. Hist., (6), II, 1888, 

 134 (Itacaranha). — ^Woodward, Ann. Mag. Nat. Hist. (6), XV, 1895, 2, pi. i, 

 fig. I (Upper Cretaceous beach between Itacaranha and Plataforma, Brazil). — 

 Woodward, Cat. Fossil Fishes, IV, 1901, 143 (same specimens). 



We found no specimens of this species, but present for comparison 

 with the others a copy of Woodward's figure (1895). (Plate XI.) 



The greatest elevation of the dorsal region and the great length of 

 the ribs, as well as the position of the ventrals, will separate this from the 

 other Brazilian species of Ellipes. 



Dastilbe Jordan, genus nov. (type, Dastilbe crandalli Jordan). 



? Hplecopsis Agassiz, Poisson Fossiles, V, pt. 2, 1844, 139 (JLavis), name only. 

 tHalecopsis Woodward, Cat. Fossil Fishes, IV, 1901, 133; type, Ostneroides 



insignis Delvoux and Ortlieb. 



In this collection are very many well-preserved specimens of a species 

 of herring-like fish not closely related to the genus Diplomystus, and ap- 

 parently forming a new genus which we call Dastilbe. 



The following are the apparent characters of the genus: body moder- 

 ately elongate, moderately compressed, the back but little less gibbous than 

 the belly. No evidence of ventral scutes, the belly perhaps rounded. 

 No trace of dorsal scutes No trace of anal finlets. Head probably 



