456 BULLETIN 189, UNITED STATES NATIONAL MUSEUM 



gill rakers fairly slender, those at angle fully half length of eye, 12 to 

 14 preceded by 5 or 6 rudiments on lower and 2 or 3 preceded by 2 or 

 3 rudiments on upper limb of first arch; lateral line following outline 

 of back, with about 50 pores; scales small, difficult to enumerate ac- 

 curately, strongly ctenoid, especially in young, rather larger on chest 

 than on abdomen, with about 6 rows between lateral line and last ray 

 of dorsal; dorsal fins well separated, the origin of the first a little in 

 advance of margin of opercle, its spine sharp and slender, the third 

 or fourth longest, 2.5 to 3.0 in head; second dorsal longer, consisting 

 of soft rays only, the longest one somewhat shorter than longest spine; 

 caudal fully as long as head without snout, with a definitely concave 

 margin; anal with soft rays only, placed directly opposite second 

 dorsal; ventral inserted under base of connected rays of pectoral, 

 reaching nearly or quite to origin of anal, 1.5 to 1.6 in head; pectoral 

 long, reaching nearly or quite to middle of base of anal, 2.0 to 2.8 in 

 length. 



Color uniformly brown above; pale underneath; membranes be- 

 tween the longer dorsal spines very dark distally; second dorsal with 

 many dusky punctulations, becoming quite dark distally; caudal 

 dusky, with two indefinite pale bars; anal and ventral pale; pectoral 

 mostly black, its upper ray and the free ray lighter. 



This species, which is new to the known fauna of Peru, is represented 

 in the collection made by the Mission by one adult, 120 mm. (93 mm. 

 to base of caudal) long, and four juveniles, 35 to 58 mm. (24 to 44 mm. 

 to base of caudal) long. The adult was removed from the stomach 

 of a bonito, presumably Sarda chilensis, caught off San Lorenzo Island. 

 As the specimen is in good condition, showing no trace of digestive 

 action, it very probably was caught by the bonito in the immediate 

 vicinity of San Lorenzo Island. The four juveniles were taken in a 

 purse seine at night, 3 miles off Caiiete, Peru. A comparison of 

 these specimens and three paratypes of P. quiescens indicates that 

 they are identical. The type material was taken in Panama Bay, 

 at depths ranging from 7 to 51 K fathoms. It apparently has not 

 been taken there in shore collections, which indicates that it probably 

 lives somewhat offshore, though the appearance of juveniles in a purse 

 seine at night seems to show that the young at least may come to or 

 near the surface. 



^an^e.— Previously reported from the Gulf of California to Panama 

 Bay. The range is now known to extend southward to Peru. 



Family CONGIOPODIDAE 



Body moderately elongate, compressed; snout produced; mouth 

 small, protractile; teeth villiform on jaws, none on vomer or palatines; 

 nostril single on each side; gill opening restricted to above pectoral; 

 pseudobranchiae present; skin naked or granulate; head partly 

 covered with bony plates; a bony suborbital stay present; dorsal fin 



