8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iie 



V with arms expanded. Both short granular and larger conical teeth 

 present on vomer. According to Bellotti (1888), females of this 

 species have the type of dentition noted above, although without 

 larger teeth on the vomer, while males have both larger teeth and 

 granular teeth on the premaxillary, vomer, and dentary. 



Head spines: Short, sharp-pointed spine piercing skin at upper 

 corner of opercle. Posteroventral margin of preopercle with 2 

 blunt projections at angles. Ventrally directed spine at end of 

 maxUlary prominent, piercing skin. 



Vertebrae and ribs: Neural spines 5-13 short and broad but be- 

 coming progressively more elongate and narrower, their tips truncate; 

 neural spines on subsequent centra needle-like. Centra 7-11 with 

 ribs at ends of parapophyses, subsequent centra lacking pleural ribs. 

 Centra 4-8 with epipleurals attached to pleural ribs; on centra 9-12 

 epipleurals appear associated with parapophyses. 



Color: Body light brown, vertical fins and head darker. Long 

 in preservative, this specimen evidently was much darker in life. 

 Risso used the conmion name "fanfre negre" and stated that the 

 species was black. 



Distribution. — KJiown from the area around Nice, from Naples, 

 and from several locaUties in the Adriatic. Little is known of its 

 depth distribution. 



Habitat. — Dwells in rocky areas in caves, according to Risso 

 (1810), and apparently is secretive. 



Comments. — Professor D'Ancona (1938) has presented an excellent 

 review of this species, and his paper should be consulted for informa- 

 tion and references not given here. 



Oligopiis longhursti, new species 



Plate 3 



Study material. — All females. Holotype: USNM 187778, off 

 Lagos, Nigeria in 5-10 fathoms, otter trawl, collected by A.R. Long- 

 hurst, August 1961. Paratypes: USNM 187779, 1 specimen, data 

 as for holotype; USNM 191732, 2 specimens, Monrovia, Liberia, 

 Bush Rod Island, beach seine, collected by George C. Miller, October 

 7, 1952; USNM 193678, 1 specimen, Liberia, 3-7 fathoms off mouth 

 of St. Paul River, trawl, collected by George C. Miller, October 14, 

 1953. 



Counts and measurements. — See table 1. 



Description. — Squamation: Scales present on large area on top 

 of head behind eye level; present on side of head over opercle and 

 area in front of dorsal half of opercle, which extends to within eye 

 diameter of eye. Lateral scale patch bounded dorsally by scaleless 



