158 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



membranes scaled; a small naked area behind pectoral, none on 

 belly ; inner edge of shoulder girdle naked. Lateral line high, con- 

 sisting of widely spaced pores, parallel to the dorsal base (position 

 on tail uncertain, owing to loss of scales). 



Origin of the single low dorsal over the ventrals, anterior to the 

 pectoral base and the end of opercle ; origin of anal immediately be- 

 hind anus, its distance from base of ventrals about one-fourth head ; 

 anal rays more slender and probably shorter than the dorsal rays; 

 ventrals greatly reduced in size, with 5 rays; pectorals with 25 rays, 

 the uppermost unbranched, inarticulate and stiff, as in the Cory- 

 phaenoidinae. 



Color in alcohol brown, the head somewhat lighter than the body. 

 Dorsal, anal, and pectorals blackish ; ventrals light brown ; nasal fossa 

 dark ; lips and lining of buccal cavity dusky bluish ; branchial cavity 

 lined with bluish black; peritoneal cavity lined with black. 



A single small paratype, 124 mm. long, 40 mm. to anus, was dredged 

 with the type. Scales with fewer spinules than in the larger type, 

 those of the body with but one, as in the small type of Marrouroides 

 infaticeps. Pseudobranchial filaments relatively larger than in the 

 type. Ventral rays, 5 ; pectoral rays, 25. 



Tahle of measurements in Jmndredths of length to anus. 



Total length, mm 



Length to anus, mm 



Length, head 



Length, eye 



Width, in terorbital 



Orbit to preopercle 



Preocular length, snout 



Preoral length, snout 



Length, maxillary 



Depth, body 



Width, body 



Anus to ventral , 



Ventral to isthmus 



Length, second ventral ray. 



Type. 



Paratype, 



Genus NEMATONURUS Gunther.' 



Nematonurus Gunther, ChaUengcr Reports, vol. 22, Deep-Sea Fishes, 1887, 



p. 124 (armafiis) ; (as a subgenus of Maeriirus). 

 Moseleya Goode and Bean, Oceanic Ichthyology, 1895, p. 417. — Jordan and 



E^^RMANN, Fishes of North and Middle America, vol. 3, 1898. p. 2570 



( longifilis ) . 

 Albatrossia Jordan and Evermann, Fishes of North and Middle America, 



vol. 3, 1898, p. 2573 { pect oralis) . 

 Bogoslovius Jordan and Evermann, Fishes of North and Middle America, 



vol. 3, 1898, p. 2574.— Gilbert and Cramer, Bull. U. S. Fish Comm., 



1910 (1912), p. 93 (clarki). 

 Dolloa Jordan, American Naturalist, vol. 34, 1900, p. 897 (substitute for 



Moseleya, preoccupied ) . 



^ Xematonurus must be regarded as a subgenus of Cori/phaenoides ; see note under N. 

 hona-nox. 



