ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 297 



Fam. EUTERPINID^E. 



Genus Euterpina, Norman, 1903. 



Syn. Euterpe, Glaus, 1863 (name preoccupied). 



Euterpina acutifrons (Dana). 

 1847, Harpacticus acutifrons, Dana, Proe. Amer. Aca/L, Boston, vol. i. p. 153. 



The only gathering in which this species occurred was from Station 65 in 

 6 52' S., 34 32' W. 



Fam. CLYTKMNESTRID^;. 

 Genus Clytemnestra, Dana, 1847. 

 Clytemnestra scutellaia, Dana. (PL XIII. figs. 11 and 12.) 



1847, Olytemnesfra scutellata, Dana, Proe. Amer. Aead., Boston, vol. i. p. 154. 



This species was observed rather sparingly at Stations 14, 32, 33, and 39, 21 28' N., 

 22 40' W., to 6 43' N., 25 48' W., all in the North Atlantic. This species may 

 be distinguished from Clytemnestra rostrata (Brady) by the different structure of the 

 antennules and caudal rami. Fig. 11, PL XIII., shows the end-joints of one of the 

 antennules, and the caudal rami are represented by fig. 12. 



Fam. HARPACTICID^E. 



Genus Harpacticus, M.-Edw., 1838. 



Harpacticus fucicolus, new species. (PL VIII. figs. 20-24.) 



Female. In its general appearance the female of this species is somewhat similar 

 to Harpacticus gracilis (Glaus). 



The antenuules are moderately slender and composed of nine joints ; the first four 

 are of moderate size and subequal, but the third is rather longer than any of the other 

 three ; the remaining five joints are small, and together are scarcely equal to one-fourth 

 of the total length the penultimate joint is the smallest. Antennae small, the outer 

 ramus short and composed of two joints. Mandibles and other mouth organs nearly as 

 in Harpacticus gracilis. 



First pair of thoracic legs slender ; the outer ramus is considerably elongated, but 

 the inner one reaches only to about the end of the first joint of the outer ramus ; the 

 armature of both rami is rather feeble. The next three pairs are somewhat similar to 

 those in Harpacticus gracilis. 



In the fifth pair, the inner portion of the basal joint is not much produced ; it is 

 provided with four setse ; one springs from the inner margin and three from the broadly 



(ROY. SOC. EDIN. TRANS., VOL. XLVIII., 543.) 



