I 



292 MEMOIRS OF THE CARNEGIE MUSEUM 



Type, 39 mm. Gluck Island. (Carnegie Museum Catalog of Fishes No. 

 1156.) 



Cotype, 37 mm. Gluck Island. (I. U. Cat. No. 11683.) 



Resembling Ammocrypta pellucida. 



Head 4.33; depth 7; D. 11; A. 8; scales 3-36-2, nine in front of dorsal. Eye 

 a little longer than snout, 3.75 in head; bony interorbital a little less than half 

 the length of head. Teeth with three large points. 



Pectorals reaching vcntrals, the outer rays not thickened; ventrals not to 

 anal ; anal rounded, the third ray reaching a little beyond tip of last, but not nearly 

 to caudal; dorsal truncate the third ray reaching a little beyond middle of last; 

 base of dorsal 6.75 in the length, equal to one-half its distance from tip of adipose. 



Pellucid in life. Middle of sides with twenty-seven to thirty stellate chromato- 

 phores, one or more of which may have slipped up or down from the line of the 

 rest; a few smaller cells dorsad of the lateral series; back with about sixteen cross- 

 bars, which do not encroach on the sides. A dark band forward from eye to end 

 of snout. Upper part of cheek and opercle each with a chromatophore; top of 

 head with a few chromatophores; ventral parts clear, except for a patch of chromato- 

 phores between the pectorals, one between the ventrals, and a patch at origin of 

 anal; a dark median line between tip of ventral and another behind the anal 

 fin. A dark band about two-thirds up on the dorsal and one across base of the 

 anterior raj's, both very faint; caudal with a few faint dark spots; fins otherwise 

 hyaline. 



150. Characidium pteroides Eigenmann. (Plate XXXIX, figs. 6, 7.) 



Characidium pteroides Eigenmann, Ann. Carnegie Mus., VI, 1909, 40; Repts. 

 Princeton Univ. Exp. Patagonia, III, 1910, 428. 

 Type, 28 mm. Konawaruk. (Carnegie Museum Catalog of Fishes No. 



1157.) 



( 'otypes, two specimens, 25-27 mm. Konawaruk. (I. U. Cat. No. 116S4.) 

 Cotype, one specimen, 23 mm. Rockstone. (C. M. Cat. No. 1158.) 

 Cotype, one specimen, 24 mm. Wismar. (I. U. Cat. No. 11685.) 

 A characin which burrows in the sand, very similar to C. pellucidum. 

 Head 4; depth 6; D. 11; A. 7; scales 4-36-2. Eye considerably longer than 



snout, a little over 3 in the head; teeth three-pointed. 



Pectorals about reaching ventrals, the tips of their outer rays not thickened ; 



ventrals not nearly to anal; anal rounded, not nearly reaching the caudal fulcra. 



Third dorsal ray reaching about to second third of the last; base of dorsal 1.3 in 



its distance from the adipose, 6 in the length. 



