208 



terminal part of the anterior ones wiih the 1st joint the longest, the last 2 

 joints subequal in length and combined about as long as the preceding joint. 

 Posterior antennae with the dividing suture of the penultimate joint located 

 far above the middle. Mandibles very strong but with the palp rather poorly 

 developed. Maxillae with the palp and the masticatory lobes extremely narrow, 

 the 2 innermost lobes confluent at the base. 



Male unknown. 



Colour not yet ascertained. 



Length of adult female 0.62 mm. 



Remarks. This form was originally described by the present author from 

 a single empty shell only, and of course solely the external characters could 

 be determined at that time. More recently however a few complete specimens 

 have come under my notice, whereby I have been enabled also to examine the 

 limbs, which exhibit some well-marked particularities in their structure, as shown 

 by the above diagnosis. It is one of the largest known species of the present 

 genus. 



Occurrence. The specimen at first examined was found by my late father 

 in shell-sand from 0xfjord, west Finmark, and another specimen was also 

 obtained by him from postglacial deposits. The complete specimens sub- 

 sequently found were taken off the west coast of Norway, the exact locality 

 not being noted. 



Distribution. Not yet observed out of Norway. 



Fossil. Norway. 



105. Cytherura striata, G. O. Sars. 



(PI. XCVII, fig. 1). 



Cytherura striata, G. O. Sars, Oversigt af Norges marine Ostracoder, p. 74. 

 Syn: Cytherura qvadrata, Norman. 



Specific Characters. Female. Shell somewhat compressed, seen laterally, 

 oblong subquadrangular in shape, almost equally high in front and behind, 

 greatest height nearly attaining half the length, dorsal margin straight and 

 horizontal in the .middle, sloping evenly in front, more steeply behind, ventral 

 margin slightly sinuated in front of the middle and somewhat angular behind, 

 anterior extremity obtusely rounded, posterior drawn out to a rather prominent 

 protuberance located below the longitudinal axis of the shell; seen dorsally, 

 narrow oblong in outline, with the greatest width scarcely exceeding Vs of the 

 length, side-edges nearly straight and parallel in the middle, anterior extremity 





