PTCNOGONIDA. 325 



the ovigerous legs. Mandibles 2-jointed, the chelate terminiil joint 

 inserted not laterally, but at the distal extremity of the preceding 

 joint. Ovigerous legs 10- joiated. The legs (but not the mandibles) 

 are armed with strong conical spines, and bear two long auxiliary 

 claws besides the normal claw. 



Length of the rostrum, a little over 2 millim. 



Length of the body (without rostrum and abdo- 

 men) nearly 3 „ 



Length of the abdomen about 1-5 „ 



I Length of leg of the first pair about 21 „ 



The body is moderately robust (as in P. jlwminense), with the leg- 

 bearing processes nearly in contact at their bases ; the articulations 

 of the segments of the body are discernible only on the ventral 

 surface. The cephalothoracic segment is about as long as the three 

 following segments taken together, and of these latter the first is a 

 little shorter than the second or third. The proboscis, as in P, 

 Hnsigne, is inserted ventrally, far back between the bases of the two 

 ovigerous legs, a]j.d, as in that species, is very slightly swollen at the 

 base, in the middle, and at the distal extremity ; the niouth is small 

 and triangulate, and is margined by three slight protuberances. 

 The abdomen is slender, longer than in P. insigne, and directed 

 upwards. >, 



The oculiferous tubercle is conical, subacute, with four dark eyes. 

 Immediately behind it the cephalothoracic segment is marked by a 

 median longitudinal depression, extending along nearly its whole 

 length. The basal joints of the mandibles are but slightly divergent 

 and extend considerably beyond the front of the proboscis ; they 

 have no indication of the acute process characteristic of P. insigne 

 and bear the second joints, which are about half as long as the 

 first, at their distal extremities ; tte pincers are smboth on their 

 inner surfaces. The basal joints are nearly glabrous. The second 

 joints and the pincers at base are clothed with fine hairs, which 

 are most abundant on the under surface of the second joint. 



The ovigerous legs are inserted on either side of the base of the 

 proboscis and are 10-jointed ; the first and third joints are short, 

 the second a little longer, the fourth and fifth still longer and of nearly 

 equal length, but the fourth is somewhat thickened, the sixth about 

 as long as the second, the seventh to tenth small, the tenth minute ; 

 the last five joints are clothed with fine hairs. 



The first joint of the legs is small, nearly , as long as the lateral 

 process, the second more than twice as long as the first, the third 

 about half as long as the second ; the fourth is about as long as the 

 three preceding joints taken together ; the fifth slenderer and a 

 little longer than the fourth ; the sixth also slenderer and about as 

 long as the fourth ; the seventh is very short ; the eighth slightly 

 curved and longer than the first, but not as long as the second joint. 

 The first joint of the leg bears, at the distal extremity of its upper 

 surface, one or two small conical spinules orprotuberauces, and at the 



