83 



a very fine denticulation. The propodite is sub-cylindrical 

 with a slight dorsal ridge ; the lower side bears two small distal 

 teeth. The dactyl is only about half the length of the propodite, 

 and its posterior edge bears about ten small teeth ; it terminates 

 in a sharp curved claw. 



The fifth legs are feeble and are carried folded in the manner 

 usual in this group of Decapods. 



The first pair of pleopods arise very near the median line 

 in the male ; they have a stout basal part and a distal joint, 

 which expands into a broad lamella which is curved down- 

 wards. The basal joint has a distal tuft of setae, and the inner 

 edge of the lamella is fringed with hairs, which are longest at 

 the proximal end. The second pleopods in the male have a 

 very long and thick peduncular part which bears at its end a 

 short, blunt tubercular process which represents the exopodite. 

 The inner branch and the appendix interna are united to form 

 a large flattened and twisted structure. It is heavily fringed 

 with setae, and the outer portion at the broadest part is covered 

 with short, stiff bristles. It is this part which constitutes 

 the appendix masculina, and has become fused with the endo- 

 podite of the pleopod. 



The pleopods of the third, fourth, and fifth segments are 

 feeble and rudimentary. 



In the female, pleopods are present on the second to fifth seg- 

 ments, and are all slender and feeble. 



The exopodite of the uropods is rough and calcareous towards 

 the outer edge, but the inner part is smooth. The endopodite 

 is rough all over, and bears short transverse ridges armed with 

 groups of little teeth. Both have marginal spines and fringes 

 of setae. 



Size, — The largest ^specimen taken by the Helga is a male 

 which measures 33 mm. 



General Distribution. — The species is found, but not com- 

 monly, on the west coast of Norway : Lofoten (Esmark), 

 Hardangerfjord (Sars), Trondhjemfjord (Norman). It has 

 been recorded from the Bay of Biscay (CauUery, M. Edwards 

 and Bouvier), off the west coast of Morocco and the Sudan, 

 from the Azores, and Cape Verde (M. Edwards and Bouvier). 

 It has also been taken plentifully in the Indian Ocean : 

 Arabian Sea, North Maldive Atoll, Travancore coast, off 

 Ceylon (Alcock). 



Irish Distribution. — This species has not previously been 

 recorded from British waters. 



Helga. 



S.R. 335.— 12 V '06. 51° 12' 30"-51° 17' 30' N., 12° 18- 



12° 16' W., 893-673 fms. Trawl and Sprat net 



on Trawl. — Four. 

 S.R. 504.— 12 IX '07. 50° 42' N., 11° 18' W., 627-728 fms., 



coral. Trawl and Sprat net on Trawl. — Two, one 



male and one immature. 



