224 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
At Palacios 24 specimens were preserved, 50 to 81 mm. Fluctuations in the lateral spots of female 
as in San Cristobal specimens; in one specimen only a small spot on one side, none on other. 
Paso Real, 2 females; Pinar del Rio, 4 females. 
Inner series of teeth in upper jaw small, with sharply triangular or tricuspid teeth in 4 or 5 rows; 
inner series of lower jaw little expanded at tip. Teeth of outer row near middle of jaws irregularly 
expanded, lateral lobes prolonged into a point; lateral teeth of lower and of upper jaw equally expanded. 
Glaridichthys falcatus Eigenmann, new species. * 
Type, No. 9664, Ind. Uni v. Mus., a female, 82 mm. long, from San Cristobal. 
Cotvpes: Eight females from ahold river channel at San Cristobal, the smallest 60 mm. long, the 
largest 85 mm. ; 4 females 50 to 53 mm., from Palacios, taken in a muddy pool in the river bed at the 
ford; 8 females and 2 males from Rio del Pinar, the females 38 to 47 mm., the males 29 and 37 mm. 
This species reaches its maximum size and is most abundant in warm, muddy pools. 
Fig. 3. Glaridichthys falcatus Eigenmann, new species. Female. 
Body long, slender, little compressed; head 4; depth 4 (in pregnant females 3.5); D. 9; A. 11; 
scales 29; head broad, wedge-shaped in profile, with lower jaw very oblique, projecting; eye very 
large, longer than snout, 2.6 in head, 1.4 in interorbital; mouth very oblique, small; interorbital 
divided into 3 distinct regions by longitudinal grooves, central portion convex; origin of dorsal equi- 
distant from base of middle caudal ray and origin of pectoral; dorsal and anal falcate; second rays 
sickle-shaped, each extending for one-third its total height beyond tip of last ray when folded back, 
little less than length of head; caudal emarginate, some of outer rays prolonged; origin of anal in 
female about equidistant from base of middle caudal ray and anterior margin of eye, its seventh ray 
under origin of dorsal; ventrals usually reaching to anal; pectorals about to middle of ventrals in 
female, to base of anal in male. 
San Cristobal specimens very pale; a dusky streak from nape along middle of back to caudal, 
