of the North Atlantic and of North-Western Europe. 675 



and smooth-edged, at its inner base are two long and two short spine-like 

 processes, and further back two minute setae ; inner member also very strongly- 

 built, falcate, its lower margin, towards the extremity, bending slightly back- 

 wards, and then curving suddenly inwards, so as to form a hook-shaped apex, 

 which closes over the end of the outer member, while its upper margin is flattened 

 out to a knife-like serrated edge. 



First maxillae short, stout, and strong; first joint with two (or three?) lobes 

 edged with spines, some of which are very strong, and denticulated on the edge, 

 and others are serrated on one edge ; second joint very short; third broader than 

 long, boldly arched on the outer side, near the extremity of which is a single 

 seta; last joint ending in a few short spines and setse and two ungues, one of 

 which is large and strongly denticulated on tlie edge. 



Second maxilla with outer tooth large (fig. 15), very broad, and trifid distally, 

 without any denticulated margin ; number of setae small, all we can see are about 

 six inside the tooth, and two beyond it ; palp, with central member ending in three 

 setae ; vibratory lamina large, semicircular, fringed with about thirty-four long 

 setae. The foregoing must be regarded as an imperfect account of these maxillae. 

 Vermiform limb with about six spines at the end and four on the sides ; 

 the spines have about six pairs of spinules near the extremity. Caudal laminae 

 (fig. 16) short, with only six ungues, of which the three uppermost are small and 

 spine-like, the last three remarkably strong and blunt at their extremities, the 

 last nearly twice as long as the penultimate and ciliated on the edge. 



This species was found sparingly amongst the proceeds of two dredgings sent 

 to us by M. de Folin ; one of these was from off the Cap de Peiias (Bay of Biscay), 

 the other from the Fosse de Cap Breton ; depth, 150 metres. 



Fam. III. — SARSIELLIDiE,* Brady and Norman. 



Shell, round or oval in ? , or obliquely truncate in $ ; strongly calcareous and 

 the surface generally roughly sculptured, but sometimes nearly smooth ; no antennal 

 sinus in S , in ^ sinus widely open and shallow; infero-posteal^y either simply 

 rounded or more usually produced into a process of considerable size. Antennules 

 (PI. LX., fig. 8) five-jointed; antennae ? (fig. 9) with appendicular branch scarcely 

 developed, in $ small, but formed for grasping. Mandible (fig. 10) with basal joints 

 of palp very stoutly built, penultimate joint very short, last joint terminating in 

 a single claw. Second maxillae (fig. 13) wholly devoid of tooth -processes ; third 



* The whole of our MS. was written, and the plates x^reparecl, before the publication of G. "W. MiilLer's 

 work. "We have slightly modified the characters we had given of the family SarsielUdcB, hut for the rest 

 have left the MS. as it was, retuining as a genus Nematohanoma, which Gr. W. Miiller considers to be the 

 male of Sarsiella. 



