1914.] NATURAL SCIENCES OF PHILADELPHIA. 233 



with broad vertical dusky band, slightly narrowing below, and upper 

 posterior edge of fin slightly dusky. Caudal, except as stated above, 

 pale and uniform. Adipose fin pale brownish. Lower fins all pale 

 or whitish. 



Length 136 inin. (caudal tips damaged). 



Type, No. 39,306, A. N. S. P. Rupununi River, British Guiana. 

 J. Ogilvie. 



Only the type known. This differs from Chilodus labyrinthicus 

 (Kner)^ in coloration, that species having but one blackish spot 

 above the depressed pectoral fin. 



(Named for the Rupununi River.) 



HEMIODOXTIX.^. 

 Hemiodus semitaeniatus Kner. 



One example 83 mm. long (caudal tips damaged), agrees with 

 Kner's account. The depth (4^) is probably due to age, as all the 

 other characters are in accord. The scales (according to the pockets) 

 are 55 in I. 1. to caudal base and 3 more on latter, besides 9 above 

 I. l. Eigenmann identifies examples from Konawaruk and Gluck 

 Island with this species,^ though they are.likely wrongly so called, 

 as they show the depth 4 to 4^ and the scales 44 or 45 in 1. I., with 

 only 7 above. 

 Hemiodus quadrimaculatus Pellegrin. 



Two examples, one 115 mm. and the other 32 mm. 



Anisitsia notata (Schomburgk). 



One 147 mm. long and another 157 mm. 



PYRRHULININiE. 



Pyrrhulina filamentosa Valenciennes. 



One 70 mm. Eigenmann mentions "adipose brick-red," certainly 

 an error if referring to an adipose fin.^ 



NANNOSTOMIN.E. 

 Charaoidium blennioides Eigenmann. 



One example 47 mm. (caudal damaged). 

 Gharacidium fasciadorsale sp. nov. Fig. 3. 



Head 3|; depth 5i; D. iii, 8; A. iii, 7; P. in, 8; V. i, 8; scales 

 34 in lateral line to caudal base and 2 more on latter; 5 scales above 



* Microdus labyrinthicus Kner, Denk. Ak. Wiss. Wien, XVII, 1859, p. 149, 

 PI. 3, fig. 5. Rio Branco and Barra do Rio Negro. 

 5 Mem. Carnegie Mus., V, 1912, p. 276, PL 36, fig. 3. 

 «L.c., p. 279. 



