I. '21. 25 



merus and few scale-like ridges on the upper surface. There 

 are some prominent teeth on the upper edges of the carpus and 

 propodite and on the lower edge of the latter a few small cor- 

 neous spines. The dactyl is curved, slightly contorted, and ends 

 in a long corneous claw ; it is smooth on the outer surface and 

 on the inner surface bears a number of strong corneous spines 

 and a few tufts of setae (see fig.). 



The third pereiopods resemble the second ; but the low^er 

 edge of the merus is unarmed and the teeth on the upper border 

 of the propodite are smaller The arrangement of spines 

 on the dactyl is similar to that found in the preceding pair. 

 The fourth pereiopods are very feebly sub-chelate. The 

 rugose area is represented by a single row of rough teeth on 

 the edge of the propodite. The fifth pereiopods are usually 

 carried bent double and resemble those of the preceding species. 

 The chela is very minute and there are long curved hairs at the 

 ends of the propodite and dactyl. 



Three pleopods of the usual form are found in the male 

 on the left side of the abdomen. Milne-Edwards and Bouvier 

 state that there are four pairs in the female. The uropods are 

 normal, much larger on the left than on the right side. 



Size. — In the largest specimen obtained by the Helga the 

 carapace is 14 mm. in length. The largest individual recorded 

 by Milne-Edwards and Bouvier had a carapace 13-5 mm. 

 in length, but Pocock's type was 15-5 mm. 



General Distribution. — The species has been found on a 

 number of occasions in the N. E. Atlantic, in an area extend- 

 ing from the west coast of Ireland to Cape Bojador on the coast 

 of Morocco. It was taken off the south-west of Ireland (Pocock, 

 1889) and Bourne recorded it from the same locality a year 

 later. Kemp (1910) mentions three specimens from the nor- 

 thern part of the Bay of Biscay, and Milne-Edwards and Bouvier 

 recorded it from a number of stations off the north and west 

 coasts of Spain and Portugal. The most southerly record 

 given by these authors is off Cape Bojador, 25° 39' N., 18° 

 18' W., with the exception of a doubtful record from the Cape 

 Verde Islands. The specimens taken by the Helga extend the 

 known range of the species northwards to 54° 17' N., 



Vertical Distribution. — The species appears to occur most 

 frequently in depths of about 300-400 fms. The greatest 

 recorded depth is T44 fms. (Milne-Edw^ards and Bouvier) off 

 the north of Spain, and the least 58 fms. (Milne-Edwards and 

 Bouvier) off Cadiz. 



Irish Distribution. — Known from the south-w-est coast from 

 the records of Pocock and Bourne mentioned above. The 

 Helga has taTcen the species on only two occasions, each time 

 a single specimen : — 



Helga. 



S. R. 151.— 27 VIII '04.— 50 miles W.N.W. of Eagle Island, 

 Co. Mayo, 54° 17' N., 11° 33' W., 388 fms., stones and rock, 



