PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 463 



Suprascapula with five or six strong teeth. Opercular flap reaching 

 about to front of spinous dorsal. Gill-rakers long, about two-thirds 

 diameter of orbit. 



Dorsal spines high and rather strong, but distinctly slenderer and 

 more flexible than in C. armatus, their tips when depressed reaching 

 considerably farther back than the tips of the i^ectorals orventrals; 

 third spine longest, a little less than half length of head ; fourth spine 

 but little shorter than third. Insertion of first dorsal spine a trifle nearer 

 last ray of second dorsal than tip of snout. Second anal spine very long 

 (slender and perfectly straight in two specimens, strong and curved in 

 the others,) its tip about reaching base of caudal. It is much longer 

 than third dorsal spine or than third anal spine, and is about 1^ in 

 length of head. Third anal spine about equal to first soft ray. (?audal 

 fin well forked. Ventral fins long, reaching in most cases scarcely to 

 the vent. Pectorals about equalling veutrals. If in length of head, not 

 reaching tips of veutrals. Vent about midway between base of ventrals 

 and middle of base of anal. 



Scales large, those in front of dorsal not crowded, 10 to 14 in number 

 (16 to 18 in G. armatus) ; 5 series between lateral line and front of spinous 

 dorsal. 



Head (with opercular flap) 2| in length; depth 3 J (3J in C. armatus). 



D. VIII-I, 10; A. Ill, 6; scales, 5-51-9. 



Color olivaceous, white below ; lateral line pale. Membrane of an- 

 terior dorsal spines and of second and third anal spines blackish, as 

 in (7. armatus; pectorals and soft parts of vertical fins somewhat dusky; 

 ventrals plain yellowish. 



This species is rather common at Mazatlan, where numerous speci- 

 mens were obtained. It reaches a length of about a foot, and is known 

 to the fishermen as " Constantino'''^ or " Rohalito ", the larger species of the 

 genus, C. undecimalis and G. nigrescens, being called ^'■Rohalo''\ 



Two specimens, 29228 from JVl^izatlan, and 28245 taken by Lieutenant 

 Nichols at Acapulco, differ froiA the others in the following respects: 

 The anal spine is shorter, slenderer, and perfectly straight, and the ven- 

 tral fins are longer, reaching well past the vent, as in G. armatus. 



Indiana University, December 2, 1881. 



NOTES ON A COliIiECTION OFViSUEJ4 ITIADE BY CAPTAIN HENRY 

 E. NICHOI^S, U. S. N., IN BRITI!ilH CO£.lJI»BIA ANI> SOUTHERN 

 AI^ASKA, TTITH DESCRIPTIONS OF NEW SPECIES ANO A TSEW 

 OENIJS (Delolcpis). 



By TARLETOIV H. BEAN. 



In the summer of 1881 Captain Nichols made a voyage in command of 

 the United States Coast and Geodetic Survey steamer Hassler, through 

 the inland waters of British Columbia and Southern Alaska, during 

 which he jsreserved for the United States National Museum 31 species 



