52 



The coxae of the third pair of legs, which bear the large oval 

 genital openings, are much swollen, and project inwards, so 

 that they lie immediately in front of the spermatheca. 



In a male specimen from station S.R. 477 there was found a 

 spermatophore projecting from the genital orifice to a distance 

 of 9 mm. It consists of a slightly convoluted cylindrical tube 

 within which the spermatozoa are densely packed. The tube is 

 embedded in a flattened translucent mass of a brownish-yellow 

 colour. This is narrowed to a point at the anterior end. 



The spermatozoa themselves are flask-shaped bodies which are 

 surrounded, except at the tip, by a thick transparent envelope. 



A specimen which was taken by the Thor at 49° 23' N.L., 

 12° 13' W.L., is peculiar in having some of the male characters 

 united with those of the female. There is a spermatheca present 

 exactly as in a normal female, and the first pair of pleopods 

 are of the female type. On the coxae of the third pair of thoracic 

 legs, however, there are flattened plates ending posteriorly in 

 hooks as in male specimens. There are no genital openings on 

 the third coxae, but there are on the fifth. Thus in the one 

 individual we have the male genital openings and the male hooks 

 on the third coxae, and also a spermatheca and first pleopods 

 of the female type. The internal sexual organs are those of a 

 normal male ; no trace of ovaries is to be seen. 



The hermaphroditism here is not so complete s.s in Calocaris 

 Macandreae, where the first pleopods are of the male type, 

 and both male and female genital openings are present (see p. 93.) 



General Distribution. — The species was first described from 

 a single specimen taken by the Knight Errant ofl the north 

 of Scotland (Norman, 1882), and it was again taken in the 

 same region, in the Faeroe Channel, by the Michael Sars in 

 1902. It has also been recorded from the Bay of Biscay 

 (Caullery), from South Africa (Stebbing), and from the Arabian 

 Sea (Alcock). 



Two specimens have also been taken by the Thor ofl the 

 south-west coast of Ireland, just outside the Irish marine 

 area. 



Irish Distribution, — The Helga has taken the species on several 

 occasions, always off the south-west coast. 



S.R. 327—8 V '06. 51° 43' 30"— 51° 38' N., 12° 15 — 



12° 18' W., 550-800 fms. Trawl— One female, 



about 85 mm. (rostrum broken). 

 S.R. 331—9 V '06. 51° 12' N., 11° 55' W., 610-680 fms. 



Trawl — Five, three males, two females, 103-52 mm. 

 S.R. 333—10 V '06. 51° 37' N., 12° 9' W., 557-579 fms. 



Trawl— Temp, at 500 fms. 9-2° C, Salinity 35-1%^ 



— One female, 101 mm. 

 S.R. 334—10 V '06. 51° 35' 30" N., 12° 26' W., 500- 



520 fms. Trawl — One male, 84 mm. 

 S.R. 363— 10 VIII '06. 51° 22' N., 12° W., 695-720 fms. 



Trawl — One female, 70 mm. 



