Sortk American J^reaJt-vxiter Ostracoda. 441 



Cypris reticulata Zaddach. (PI. XLIIL, Fig. 3 and 4.) 



1844. Cypris retimlala,Z-AM?LCh (74, p. 34). 



1851. Cypris affinis, S. Fischer (23, p. 32, Tab. X., Fig. 9-11). 



1853. Cypris affinis, Lilljeborg (3», p. 116, Taf. XI., Fig. 8-14). 



1868. Cypris tessellaP I, Brady (6, p. 366, PI. XXIII., Fig. 39-45). 



1883. Cypris affinis, Lilljeborg (41, p. 146). 



1889 Cypris reticulata, Brady & Norman (9, p. 76, PL VIII., 



Fig. 1-2; XII., Fig. 5-7). 



1891. Cyjms reticulata, Vdvra (68, p. 99, Fig. 34»-34!i). 



1893. Cypris reticulata, Daday (19, p. 296). 



Length 1.25 mm., height .72 mm., width .62 mm. 



Shell translucent to clear yellowish, with a dark blue 

 patch dorsally and just posterior to the eye-spot. The 

 strikingly sculptured form of the shell (Fig. 3) is es- 

 pecially noticeable in the young stages. This sculpturing 

 resembles striations at the center of the shell, changing 

 to radially arranged patterns resembling filagree work. 

 Occasionally, in old specimens, this characteristic surface- 

 marking may be almost absent, but a collection could 

 hardly be made which did not contain some specimens 

 showing it clearly. 



Seen from the side, the shell is much the broadest in 

 front, highest at the anterior third, where there is a 

 small gibbous elevation, below" which is the eye-spot. 

 The dorsal margin slopes rapidly back to the quite nar- 

 row posterior extremity; ventral margin nearly straight, 

 slightly sinuate just posterior to the middle. 



Seen from above, the shell is tumid, oval, widest in 

 the middle, and tapering somewhat more rapidly an- 

 teriorly. The dark dorsal coloration appears in the 

 form of a rough cross. 



The longest of the natatory setee reach but slightly 

 beyond the terminal claws. 



The first pair of maxillae are slender, weakly developed 

 the spines on its first process toothed in my specimens, 

 which differ in this particular from Vavra's, in which 

 these spines a^e described (66, p. 100) as smooth. 



Second foot long, slender, the terminal claw covered, 

 slender, and twice as long as the terminal segment. 



