﻿72 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



the shell, which is markedly different from C. arcuata, and by the 

 extra bristle on the second segment of the first leg. It is a pleasure 

 to dedicate this form to my old friend Dr. Stillman Wright. 



CHLAMYDOTHECA BRAZILIENSIS. new species 



Figure 13, d-g 



Specific characters— F^MAhY,: Both valves similar in shape, with 

 moderately developed anterior flanges. Dorsal margin arched, 

 highest slightly anterior to the center. A slight indentation appears 

 in the ocular region. Anterior end more broadly rounded than 

 posterior. Ventral margin slightly convex in the center. Surfaces 

 of valves smooth and finely haired. Hyaline border and pore canals 

 lacking. Antennae characteristic of the genus. First leg with a 

 moderately developed terminal claw. Second leg with the terminal 

 beak almost straight. Masticatory process of the maxilla with two 

 smooth and two heavily toothed spines. Furca well developed, with 

 the terminal claw equal in length to about two-thirds the length of 

 the dorsal margin of the furca. Subterminal claw slightly more than 

 half the length of the terminal claw. Both claws haired in their distal 

 halves. Terminal seta equal to not quite half the length of the 

 terminal claw. Dorsal seta shorter than terminal seta and equal to 

 one-half the length of the subterminal claw. Length 4.46 mm.; 

 height 2.55 mm. 



Male: Unknown. 



Holoiype.—U.S.'NM. No. 83012. 



Type locality. — One female was taken from a collection made in an 

 artificial lake near Lavras, Ceara, by Dr. Wright (August). Holo- 

 type, U.S.N.M. No. 83012. 



Genus STENOCYPRIS Sars 



Stenocypris Sars (part), Forh. Selsk. Christiania, 1889, No. 8, p. 27, 1890. 

 Stenocypris sensu stricto VIvra, Jahrb. Hamburg. Wiss. Anst., vol. 12, 

 p. 4, 1894. 



Valves elongated, height usually not greater than half the length. 

 Natatory setae of second antennae extend to about the tips of the 

 terminal claws. Third masticatory process of maxilla with two 

 spines. Furca asymmetrical, with dorsal margin heavily denticulated 

 in one member. Dorsal seta usually absent. Both claws heavily 

 toothed in each furca. 



STENOCYPRIS MALCOLMSONI (Brady) 



Figure 13, k 



Cypris cylindrica Baird, Froc. Zool. Soc. London, vol. 27, p. 233, 1859. 

 Cypris malcolmsoni Brady, Journ. Linn. Soc. London, vol. 19, 297, 1886. 

 Stenocypris malcolmsoni Sars, Forh. Selsk. Christiania, 1889, No. 8, p. 28, 1890. 



