﻿FRESH-WATER OSTRACODA FROM BRAZIL — TRESSLER 75 



Dorsal seta very short; claws very unequal and both heavily armed 

 with teeth. Terminal claw slightly longer than one-third the length 

 of the ramus. Terminal seta reaching almost to tip of terminal claw. 

 Length 1.90 mm.; height 1.02 mm. 



Male: Unknown. 



Material examined. — Nine specimens were found in temporary 

 pools on grassland near Porto Alegro (January) by Dr. Kleerekoper. 

 Several specimens were also found by Dr. Kleerekoper in temporary 

 backwater in pools in the river Tiete near Sao Paulo City (March, 

 February, November). 



Recorded distribution. — Argentina (Claus, 1892); Brazil (Sars, 1901); 

 northern Brazil (Tressler, unpublished) ; Paraguay (Daday, 1905) ; 

 Yucatdn (Furtos, 1936). 



Remarks. — This easily recognized species is apparently confined to 

 South and Central America. 



STRANDESIA DENTICULATA, new species 



Figures 13, q-s; 14, c 



Specific characters. — Female: Height slightly greater than half the 

 length and highest in anterior third. Dorsal margin straight and 

 slopmg from highest point in ocular region to posterior extremity. 

 Ventral margin straight. Both ends broadly rounded, anterior end 

 more broadly rounded than posterior. Posterior extremity of both 

 valves armed with a series of sharp spines or serrations. Left valve 

 serrations more strongly developed than those of right. Natatory 

 setae of second antennae reach almost to tips of terminal claws. First 

 leg short and heavy with a short thick terminal claw. Spines on 

 inner margins of second and third joints very well developed but 

 unhaired. The third segment is distinctly divided. Second leg with 

 a heavy, curved, and toothed terminal beak and a reflexed seta, which 

 is greatly enlarged at its proximal end. A short, heavy, recurved 

 seta is located on the subterminal segment. Spines on third mastica- 

 tory process of maxilla are heavily toothed. Furca equal to five- 

 eighths the length of the valve. Terminal seta four-sevenths length 

 of terminal claw. Dorsal margin with four groups of subequal teeth 

 and a fifth partially developed group. Dorsal seta very short and 

 situated the width of the basal portion of the subterminal claw from 

 the subterminal claw. Claws both heavily toothed. Length 1.40 

 mm.; height 0.76 mm. 



Male: Unknown. 



Holotype.—V.^.^.M. No. 83032. 



Type locality. — Five specimens were collected by Dr. Kleerekoper 

 in a reservoir near Porto Alegre (July). In addition to the specimens 

 from the type locality nine others were obtained from pools on grass- 



