576 Bulletin 47, United States National Museum. 



than dorsal ; pectorals reaching ventrals, which reach halfway to seventh 

 anal ray. Coronado Islands, near San Diego ; one specimen from stomach 

 of Sebastodes miniatus. (Eigenmann.) Very close to T. crenularis, but 

 the belly less arched, the anal spots fewer, and the ventrals slightly 

 longer ; probably identical with the latter. 



Tarleloribeania tenua (tennis), EIGENMANN & EIGENMANN, Proc. Cal. Ac. Sci., rv, 1890, 7, Corona- 

 dos. (Type, No. 41882. Coll. Eigenmann.) 



Family LXXVI. MAUROLICID^E. 



Body moderately elongate, compressed, scaleless. Barbels none. Mar- 

 gin of the upper jaw formed by the maxillary and premaxillary, both of 

 which are provided with teeth. Opercular apparatus incomplete. Gill 

 opening very wide, the outer branchial arch extending forward to behind 

 the symphysis of the lower jaw. Pseudobranchiae present. Air bladder 

 none. Adipose fin rudimentary. Series of luminous photophores present 

 along the lower side of the head, tail, and body. A single dorsal fin with- 

 out spinous rays. (Goode & Bean.) Genera 4 or 5, with some 8 or 10 

 species ; deep-sea fishes. (Sternoptychidcu, group Cocciina, Giinther, Cat., V, 

 387, 1864.) 



a. Gill rakers very short; dorsal fin on hinder half of body. 



6. Dorsal fin well forward, its last ray inserted nearly over the first of anal; luminous spots 



over and behind anal forming a nearly continuous series. 



c. Luminous spots appearing as impressions on the skin, not placed on black globular 



bodies; anal rays 25 to 30; double row of spots behind pectorals ceasing at veu- 



trals. MAUROLICUS, 270. 



cc. Luminous spots occuring as "convex pearls, each sitting on a black globular body;" 



anal rays about 14; double row of spots behind pectorals reaching anal. 



VlNCIGUERRIA, 271. 



bb. Dorsal fin farther back, nearly opposite anal, its first ray nearly over the front of anal; 

 luminous spots over and behind anal gathered in 5 clusters of 2 to 4 each, the 

 spots on a black background; star-shaped pigment spots along lateral line; anal 

 rays about 24. VALENCIENNELLUS, 272. 



270. MAUROLICUS, Cocco. 



Maurolicus, COCCO, Lett. su. Salmon., 32, 1838, (amethystino-punctatus). 



Body oblong, compressed, covered with silvery pigment ; series of lumi- 

 nous spots along the lower side of the head, body, and tail, those over 

 and behind anal forming a nearly continuous series ; luminous spots 

 appearing as simple impressions on the skin. Scales wanting, or perhaps 

 present in life, but very thin and caducous. Head compressed, the bones 

 thin, but ossified. Cleft of mouth wide, very oblique, the lower jaw 

 prominent. Maxillary large, broad, toothed on its edge, produced back- 

 ward, receiving the slender premaxillary in the upper concave part of its 

 margin; both jaws with minute teeth; no teeth on vomer or palatines. 

 Eye large ; gill rakers very long. Pectorals and ventrals well developed; 

 dorsal long, inserted posteriorly, opposite anal, with no projecting neural 

 spines before it ; adipose fin rudimentary or obsolete ; anal rays 25 "or 

 30; caudal forked. Pseudobranchise well developed. No air bladder. 

 Branchiostegals 8 or 9. Size small. (Named for Maurolico, an Italian 

 naturalist.) 



