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smaller. Posterior antennae very like those in C. clathrata, but with the apical 

 claws comparatively shorter. Legs likewise shorter; last pair with the 1st joint 

 of the terminal part not attaining the length of the other 2 combined. 



Male of smaller size than female and having the shell comparatively less 

 high. Copulative appendages of almost exactly same structure as in the pre- 

 ceding species. 



Colour of shell dark reddish brown, with the marginal parts lighter. 



Length of adult female scarcely exceeding 0.35 mm. 



Remarks. The present species agrees in almost all the structual details 

 closely with C. clathrata. It is however of very much smaller size, being in 

 reality one of the smallest Ostracoda known, and differs moreover conspicuously 

 in the sculpture of the shell. 



Occurrence. I have taken this form not infrequently in several places of 

 the south and west coasts of Norway among algas of the littoral zone. Owing 

 to its extremely small size it may however easily escape to attention. 



Distribution. British Isles, Holland, Fosse de Cape Breton, Bay of Biscay, 

 Mediterranean. 



Fossil: Norway, British Isles. 



Subfam. 5. Loxoconchinae. 



Remarks. -In this subfamily I propose to include the 2 genera Loxoconcha 

 and Cytheropleron, which seem to me to present some characters in common, 

 thus forming a natural group distinguishing itself from the other subfamilies 

 here recorded. Both genera are well represented in the Fauna of Norway. 



Gen. 43. Loxoconcha, G. O. Sars, 1865. 



Syn: Normania, Brady. 



Generic characters. Shell more or less pronouncedly rhomboid in shape, 

 with the posterior part rather bowed and compressed below. Surface of valves 

 evenly convex, without any traces of lateral expansions. Hinge with the 

 closing teeth distinct, though rather small. Eyes well developed, in some cases 

 confluent. Anterior antennae with the terminal part, as a rule, composed of 4 

 joints clothed with scattered simple sets, the last one rather prolonged. Posterior 

 antennae without any dividing suture of the penultimate joint, anterior setiferous 



27 - Crustacea. 



