996 THE VOYAGE OF H.M.S. CHALLENGER. 



peduncles of the second pair shorter than the inner ramus, the outer ramus shorter than 

 the inner, these rami being respectively rather longer than those of the first pair, similar 

 in armature, the peduncles reaching back as far as those of the first, but not as those of 

 the third pair ; the peduncles of the third pair short, with a spine near the middle of the 

 inner margin ; the rami long and broad, the outer shorter than the inner, the outer 

 margins almost straight, the inner and apical margins curved, thickly set with long 

 plumose setae. 



Telson reaching beyond the peduncles of the third uropods, as long as the outer 

 ramus of that pair, cleft for three-quarters of its length, the sides of the cleft diverging 

 halfway down towards the apex, while the outer margins converge, a pair of double 

 apices being formed, with a long spine in each cavity ; near the lateral margin on either 

 side the telson has four large spines, the two sides net being entirely symmetrical in 

 the arrangement of them. 



Length. — The specimen, in the position figured, measured one inch in a straight line 

 from the rostrum to the apex of the second uropods. 



Locality. — Station 49, south of Halifax, Nova Scotia, May 20, 1873; lat. 43° 3' N., 

 long. 63° 39' W. ; depth, 85 fathoms; bottom, gravel, stones; bottom temperature, 

 35°. One specimen, female. 



Remarks. — It will be observed that this species is distinguished from Pardalisca 

 cuspidata, Kroyer, by several particulars ; the mandibular palps are longer, the spines 

 on the outer plate of the first maxillae have no lateral tooth, the outer plate of the second 

 maxillae is rather shorter instead of rather longer than the inner plate, the palps of the 

 maxillipeds, and in especial the second joints, are longer, and the fingers of the two pairs 

 of gnathopods are of very different structure. 



Pardalisca marionis, n. sp. (PL XCIV.). 



Rostrum small, the sides of the head scarcely lobed. The pleon missing. 



Eyes not observed. 



Upper Antennse. — The first joint longer than the two following united ; the third 

 more than half the length of the second ; of the flagellum eighteen joints remaining, 

 together longer than the peduncle, the first joint as long as the third joint of the peduncle ; 

 the secondary flagellum of five joints, the first as long as the first of the primary. 



Lower Antennse similar to those of Pardalisca abyssi, but not apparently having the 

 gland-cone elongate ; the flagellum of twenty-nine joints, together not very much longer 

 than the peduncle. 



Upper Lip rather deeply emarginate, one side of the emargination being a straight 



