﻿78 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



Dorsal margin of ramus with seven groups of subequal teeth. Length 

 1.42 mm.; height 0.77 mm. 



Male: Unknown. 



Holotype.—U.S.l<^M. No. 83030. 



Type locality. — One specimen was found in a collection made by 

 Dr. Kleerekoper from temporary pools on grassland near Porto 

 Alegre (January). 



STRANDESIA ITAPEVA. new species 



Figure 14, i-k, y 



Specific characters. — Female: Height equal to about half the length' 

 highest a little anterior to the middle. Dorsal margin arched. Both 

 extremities rounded, anterior extremity more broadly rounded than 

 posterior. Posterior end of right valve with a projecting flange. 

 Ventral margin slightly indented in the middle. Natatory setae of 

 second antennae overreach the tips of the terminal claws slightly. 

 Masticatory spines very lightly toothed. First leg with a long, 

 slender claw which is finely toothed on its distal third. Spines on 

 inner margin of divided third segment well developed but unhaired. 

 One short and two longer setae at base of terminal claw. Second leg 

 with a heavy recurved beak which is undenticulated. Reflexed seta 

 well developed and straight with a slight crook in its distal third. 

 One short recurved seta at base of beak. Furca slightly less than 

 half the length of the valves. Dorsal margin with four groups of 

 subequal teeth. Dorsal seta short and located close to base of sub- 

 terminal claw. Terminal seta slightly less than half the length of 

 terminal claw. Both claws heavily armed with sharply pointed 

 teeth. Length 1.20 mm.; height 0.63 mm. 



Male: Unknown. 



Holotype.—U.S.^.M. No. 83029. 



Type locality. — Twenty specimens were found in a collection made 

 by Dr. Kleerekoper in the shore water of the Lagoa Itapeva, Rio 

 Grande do Sul (July) . Besides these specimens from the type locality, 

 3 were also collected by Dr. Kleerekoper from temporary pools on 

 grassland near Porto Alegre (January). 



STRANDESIA OVALIS, new species 



Figure 14, l-o 



Specific characters. — ^Female : Broadly oval in shape, valves approxi- 

 mately equal. Height somewhat greater than half the length. High- 

 est in the middle. Dorsal margin well rounded and sloping equally 

 to well rounded posterior and anterior extremities. Extremities 

 equally rounded. Ventral margin sinuated. Three long, coarse 

 hairs extend from the posterior extremity. Natatory setae on second 

 antennae reach to tips of terminal claws. First leg with a long, 

 slender terminal claw finely toothed in its distal half. Spines on 



