88 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



Remarks. — This new subspecies may be distinguished from the other 

 members of the genus by means of the key on page 82. It has longer 

 pectoral fins than A. transilis transilis and more numerous scales on its 

 breast, whereas stagnalis has more numerous scales on its breast than 

 limnaeus. 



Named limnaeus in reference to its habitat in ponds. 



AUSTROFUNDULUS STAGNALIS, new species 



Figure 11 



Austrofundulus transilis (in part) Myers, Stanford Ichthy. Bull., vol. 2, No. 4, 

 p. 110, 1942 (20 km. south of Lagunillas, Venezuela). 



Holotype.—U. M.M.Z. No. 141918, 31.5 mm. in standard length, 

 collected by F. F. Bond (Field Coll. No. 91) about 6 km. north of the 

 Rio Misoa and 20 km. south of Lagunillas, Maracaibo Basin, March 

 23, 1938. 



Paratypes.—U M.M.Z. No. 141919, 103 specimens, 14.5 to 34 mm. 

 in standard length, taken along with the holotype and bearing same 

 data; U.S.N.M. No. 121691, 125 specimens, 9 to 20 mm., collected by 

 Leonard P. Schultz in a roadside pond, tributary to Rio Cocuiza, 10 

 km. west of El Mene, Venezuela. 



Description. — The description is based on the holotype and para- 

 types. Detailed measurements and counts are recorded in tables 

 10 and 11. 



Head depressed, body compressed posteriorly, interorbital flat or 

 nearly so ; profile of head straight or with a slight concavity opposite 

 orbits; tip of the lower jaw entering profile when mouth is closed; 

 margin of eye not free; outer row of teeth in both jaws formed by coni- 

 cal teeth, widely spaced and larger than the wide villiform band behind 

 them; anterior nostrils tubular, posterior nasal opening above front 

 of eye; cheek and operculum scaled; top of head scaled to a line be- 

 tween front of eye; on largest specimens the caudal fin is scaled not 

 quite halfway out; scales on breast much smaller and more crowded 

 than on sides; anus immediately in front of anal origin; gill rakers 

 short, about 2 or 3 + 12 or 13; caudal fin truncate; middle rays of 

 pectorals and pelvics longest; about fifth or sixth from last ray of 

 both dorsal and anal fins longest; pectoral fins reach to the anus and 

 pelvic fins reach past anal origin; dorsal and anal fins when depressed 

 reaching a little past base of caudal fin; dorsal origin equidistant be- 

 tween midcaudal fin base and rear of head or to upper edge of gill 

 opening; anal origin in front of a vertical line through dorsal origin 

 and equidistant between midcaudal fin base and posterior edge of 

 preopercle; dorsal origin about over base of second branched ray of 

 anal fin; caudal peduncle a little longer than deep; length of caudal 

 fin about equal to eye and postorbital length of head. 



