﻿74 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOo 



anterior end well developed. Surface of valves covered with the 

 puncta characteristic of the genus. Natatory setae of second antennae 

 reach to tips of terminal claws. Spines of third masticatory process of 

 maxilla smooth. Remainder of appendages are normal for the genus. 

 Furca equally armed. Dorsal margin with a series of five groups of 

 teeth. Terminal seta equal to five-eighths the length of the terminal 

 claw. Dorsal seta very short and situated the width of the base of 

 the subterminal claw from the subterminal claw. Subterminal claw 

 curved at end. Length 1.55 mm.; height 0.75 mm. 



Male: Unknown. 



Holotype.—U.S.ISIM. No. 83033. 



Type locality. — The type, a female, was taken by Dr. Kleerekoper, 

 with another specimen, from a lake near the Mogy Guassu River 

 (August). All additional specimen was taken by Dr. Kleerekoper 

 from a reservoir near Porto Alegre, Rio Grande do Sul (September). 



Genus STRANDESIA Stuhlman 



Strandesia Stuhlman, Sitz. Ber. Akad. Berlin, p. 1260, 1888. 

 Acanthocypris Clatjs, Arb. Inst. Wien, vol. 10, p. 196, 1892. 

 Neocypris Sars, Arch. Naturv. Christiania, vol. 24, No. 1, p. 29, 1901. 

 Strandesia G. W. Mullbe (part), Das Tierreich, vol. 31, 1912. 



Shell elongated and moderately plump. Right valve often with a 

 prominent dorsal flange. Left valve with a row of tuberclelike canals 

 removed from the free margins. Natatory setae of second antennae 

 reach to tips of terminal claws. Furca powerfully developed and 

 equal to at least half the length of the valves. Two claws and two 

 setae. Dorsal seta less than the width of the ramus from the base 

 of the subterminal claw. 



STRANDESIA BICUSPIS BICUSPIS (Glaus) 



Figure 13, p 



Acanthocypris bicuspis Glaus, Arb. Inst. Wien, vol. 10, p. 199, 1892. 

 Neocypris gladiator Sars, Arch. Naturv. Ghristiania, vol. 24, No. 1, p. 29, 1901. 

 Eucypris bicuspis Daday, Untersuchungen iiber die Siisswasser-Mikrofauna 



Paraguys: ZooL, vol. 18, pt. 44, p. 243, 1905. 

 Strandesia bicuspis bicuspis Muller, Das Tierreich, vol. 31, p. 187, 1912. 



Specific characters. — Female: Valves dissimilar, right valve with a 

 prominent dorsal flange, which is drawn out to a point in the dorsal 

 third of the valve. Height (including flange) equal to three-fifths 

 the length; highest in the middle. Left valve lacking the dorsal 

 flange and with dorsal and ventral margins nearly parallel. Ends 

 of both valves broadly rounded. Surface of valves sparsely hairy. 

 Both spines of third masticatory process of maxilla heavily toothed. 

 Terminal claw of second leg strong, slightly bent and toothed. Furcal 

 ramus straight and twenty times longer than narrowest width of 

 ramus. Dorsal margin with seven groups of well-developed teeth. 



