352 PROCEEDINGS OF THE ACADEMY OF [1899. 



Range. — Peruviau coast. Tschudi's origiual descriptiou is 

 copied Jjy Jordan and Fesler {J. c. ). 



62. Archoscion analis (Jenyns). 



OtoUthus analis Jenyns, Zool. Beagle Fishes, 164, 1842 [Callao]. 



Local name, Allanque. 



It is the conviction of the writer that no hard and fast lines can 

 be drawn between the genera Archoscion, Isopicthus and Cynoscion 

 and that their species should come under one generic head, for 

 which the name Cynoscion has priority. But iu the absence of 

 material for a comparative study of the groups, we are forced to 

 follow precedent in placing this and the two following species under 

 Archoscion. 



Three examples, length 330 mm. to 350 mm. Head of, depth 

 4|; D. ix-i,24 (23); A. i,15 (14). Eye 6^; interorbital broad, 

 4 in head; snout 3f. 



Body elongate, compressed, back but little elevated. Snout 

 long, lower jaw projecting. Head long, profile straightish, very 

 slightly convex above eyes. Maxillary^ extending to posterior 

 border of pupil, 2^ in head, its broad distal end about one-half the 

 length of the snout in width. Preorbital narrow, 2f in eye. 

 Upper anterior canines stout, conical, slightly incurved. The 5 to 

 7 lateral teeth of the lower jaw enlarged, scattei-ed, about one-third 

 the length of the upper canines. Anterior teeth of lower jaw in 

 two rows, rather small and crowded. Preopercle with a crenulate 

 membranaceous border. Soft flap of opercle extending to or past 

 origin of pectoral. Opercular spines absent. Gill rakers long, 

 slender, 7 + 9. 



First dorsal spine very weak, third the longest, 2:^ in head. lu- 

 terdorsal space equal to eye. Origin of second dorsal nearer to 

 caudal than to snout. Pectoral narrow, If in head. Ventrals 

 shorter, about 2 in head. Caudal shall owly lunate. 



Scales moderate, 63 pores in lateral line, about 75 transverse 

 rows from opercle to caudal. Lateral lines somewhat decurved 

 under origin of soft dorsal. Head everywhere scaled, except on 

 premaxillary. 



Color, dark umber above, lighter on sides, yellowish Avliite 

 below. Sides below lateral line with a great number of small 



