414 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [72] 
78. PACHYPOPS ADSPERSUS. 
? Corvina grunniens Schomburgk, Nat. Libr. Fish. Guiana, 1843, 136 (Rio Essequibo). 
Pachyurus (Lepipterus) adspersus Steindachner, Ichthyol. Beitr., viii, 5, 1879 (Rio Para- 
hyba, Rio Doce, Rio San Antonio, Mucuri). 
Habitat.—Rivers of Brazil. 
We have examined numerous specimens of this species in the museum 
at Cambridge from Rio Doce, Santa Clara, Rio San Antonio,and Men- 
chez. The specimen described, 15 inches in length, is from the Rio 
Doce. 
The scanty deseription of Corvina grunniens indicates some river 
Sciznoid, with distinctly spotted dorsal and anal fins, and with the fim 
rays D. 1X, 32; A.II,7. The account comes nearest among known species 
to Pachypops adspersus, and if this species occurs in the Essequibo it 
should probably stand as Pachypops grunniens. But without a better 
knowledge of the local fauna of Guiana, such an identification would 
be premature. 
Genus X VIL.—POLYCIRRHUS. 
Polycirrhus Bocourt, Nouv. Arch. Mus. d’Hist. Nat., iv, 22, 1868 (dumerili). 
TyPE: Polycirrhus dumerili Bocourt. ; 
This genus is composed of three species of Sciwnoid fishes, distin- 
guished from Micropogon chiefly by the absence of serre on the pre- 
opercle, and from Genyonemus by having the normal number of dorsal 
spines. All the known species are marked by well-defined dark eross-: 
bands, and all belong to the fauna of South America. 
ANALYSIS OF SPECIES OF POLYCIRRHUS. 
a. Dorsal rays about IX-I, 22; caudal fin double truncate; body rather elongate, the 
back somewhat elevated, the headlow andsmall; profile steep; ventral outline 
straightish ; snout, not very short, somewhat acute, 34 in head ; interorbital 
area broad, convex, 3in head; eye 54; mouth small, entirely inferior, max- 
illary extending past middle of eye, 23 in head; teeth small, villiform, the 
outer scarcely larger; preopercle rounded, its edge with soft cilia; third 
dorsal spine 3 in head; soft dorsal with a scaly sheath, its membranes with 
small scales; ventrals filiform at tip, 1} in head; anal inserted well forward, 
its second spine 2? in head; caudal double truncate ; lateral line much arched 
anteriorly. Color, bluish-gray, silvery below; 6 rather broad distinct cross- 
bars extending down to edge of belly ; two inconspicuous dark cross-bars on 
head; lower fins pale. Head 33 to 33 in length; depth 3} to 34. D. IX-I, 
22 to 25; A. II, 7 or 8; scales 6-47 to 52-9 .... 2... 2s2e se ccenns DUMERILI, 79. 
aa. Dorsal rays X-I, 26 to 32. 
b. Caudal fin obliquely truncate, or somewhat pointed. Dorsal rays X-I, 29 to 31; 
snout short, 3? to 44 in head; body more elongate than in P. dumerili, the 
snout lower, shorter, and more pointed; maxillary 3} to 3}in head; gill-rakers 
minute; fins scaly; soft dorsal rays 3 in head; eye 44 to6; longest dorsal 
spine 24; caudal 1,); in head; second analspine very small, 44in head ; pectoral 
14; preopercle ciliated on its membranous border. Coloration less marked 
than in P. dumerili, the darker cross-bands narrower, more numerous (about 
8), and less sharply defined; the anterior band sometimes reduced to a large 
round black blotch above base of pectoral; pectoral mostly dusky. Head 4; 
depth 34. D.X-I, 29 to31; A. II, 8; scales about 7-58-11 ..BRAsILIENSIS, 80. 
