336 



PEOCEEDINGS OF THE ACADEMY OF 



[June, 



free. Interorbital space rather broad and a little convex. Gill-open- 

 ing extending forward to anterior margin of pupil. Rakers about a 

 dozen? on lower outer limb of first arch. Filaments short. Isthmus 

 narrow. Scales striate. Color in alcohol pale or dull brown, abdominal 

 region and lower surface of head paler. Flanks also tinted with a 

 livid grayish or dull slaty hue. A streak of slaty, diffuse and indis- 

 tinct at first, extending along side of caudal peduncle and then con- 

 tinued out on median caudal rays as a blackish band. A dusky diffuse 

 humeral blotch about size of orbit. Fins otherwise mostly uniform 

 dull brownish. Muzzle deep brownish and front of mandible same. 



Hemigrammus rubustulus Cope. 



Spots or specks on cheek indistinct. Iris dusky-coppery. I^ength 2 

 inches (caudal damaged). Type. 



The other cotypes range as follows : Head 2f to 3^ ; depth 2 to 2f ; 

 D. II, 9; A. Ill, 23 to iii, 29, i; scales 27 to 32 (squamation mostly 

 injured) ; total length H to 2 inches. 



Other examples in the Hauxwell Coll. 



Astyanax lepidurus (Kner). 



Tetragonopterus lepidurus Cope, Proc. Amer. Pliilos. Soc. Pliila., XI, 1869-70 

 (August 19, 1870), p. 566. Para. Mr. De Schulte Buckow. 



Head 3^; depth 3|?; D. iii, 9; A. iii, 21 ?; scales (according to pockets) 



