1910.J OSTKACODA FROM TAXC.'AXYIKA. 741 



shape of tlie shell, hnt exliihitii),','- tlie nsual sexual chavaeters 

 which seem to be fully in nccord with those in the otlier sjiocies 

 of the genus. 



Length of shell ()-41 nnn., height O'K) mm., width O'll mm. 



Remarks. — I have been in some doubt about tlie systematic 

 place of this form. In the general .shape and sculpturing of the 

 shell, as also in the apparent reduction of the natatory setaj of 

 both pairs of antenna^, it exhibits a certain resemblance to the 

 species of the genus Candonopsis Brady, and indeed at first I was 

 inclined to refer it to that genus. On a closer examination of 

 the two solitary specimens found, I now have been induced to 

 abandon this opinion, and find that this form should more 

 properly be referred to the genus Pamc?/j»ri«, though constituting 

 a rather anomalous species. 



Occurrence. — Only two specimens of this .small Ostracod, n. 

 female and a male, have come under my notice. The female 

 specimen was found in a sample from Tanganyika (138), taken 

 13/10/04 at Snmbu (S.W, of lake). The male specimen was 

 found in another sample from the same lake (109), taken 28/9/04 

 at Mbete (S. end of lake). 



12. Paraoypma curta, sp. n. (Plate LXXIII. figs. 15-17.) 



Specific Characters. — Male, Shell moderately compressed ; seen 

 laterally (fig. 15) of a somewhat triangular form, greatest height 

 occurring a little in front of the middle and exceeding half the 

 length, anterior extremity rather obliquely rounded, posterior 

 narrower and obtuse at the end, dorsal margin considerably 

 arched and sloping behind with a slight curve to the posterior 

 corner, ventral margin slightly concave in the middle ; seen 

 dorsally (fig. 16) narrow oblong in form, greatest width some- 

 ■svliat exceeding one-third of the length and occurring behind the 

 middle, both extremities somewhat blunted at the end. Valves 

 thin and pellucid, slightly unequal, and clothed at each extremity 

 Avith delicate hairs, more densely crowded anteriorly. Surface of 

 shell perfectly smooth. Cauda] rami (fig. 17) of quite normal 

 structure, claws rather slender, dorsal seta well developed. 



Length of shell 0*55 mm., height 0-30 mm., width 0-20 mm. 



Remarks. — This is a well-marked genuine Paracyfwia, some- 

 what resembling in shape P. complanata, but of much smaller 

 size and having the shell considerably moi'e abbreviated. 



Occurrence. — A solitary specimen of this fonn, a fully grown 

 male, was found in a sample from Tanganyika (138), "taken 

 at Sumbu (S.W. of lake). 



Genus 2. Oypridopsis Brady. 



Syn. CandoneUa Olaus. 



i 'i/pridopseUa Kaufman , 

 Remarks. — This genus was established in the year 1867 by 

 Prof. Brady, to comprise the three northei'u species, C. vidua^ 



