246 Transactions. — Zoology. 



Under this classification, nay new species of Phoxichilidium (P. obliquum) 

 would not come exactly under any of the above genera. I have, however, 

 followed the classification given by Dr. Hoek in his " Keport, etc." 

 Genus I. Pallene, Johnston. 



Body usually very slender, distinctly divided into four segments ; ante- 

 rior segment usually contracted like a throat behind the insertion of the 

 mandibles and rostrum. The rostrum is short and broad. Abdomen short, 

 erect. The strong mandibles are placed over the rostrum, and are furnished 

 with powerful claws ; the palpi are wanting in both sexes. 



The ovigerous legs are present in both sexes and are long and 10-jointed ; 

 the last four joints are furnished with a row of closely-placed toothed spines. 



The legs are very long and slender, and have the 4th joint in the female 

 considerably enlarged for the reception of the large eggs ; claws furnished 

 with large secondary claws. 



The ovaries occur only in the 4th joints of all the legs but the 1st pair ; 

 and the large eggs after ejection from the genital openings are attached in 

 pairs to the ovigerous legs. The development within the egg is very pro- 

 tracted, and the larvas emerge in a nearly complete form, differing from the 

 adults only in size, and in a few subordinate points of structure. 



6. Pallene novce-zealandicc, n. sp. PI. xiv., figs. 1-4. 



Body slender and very smooth, with a considerable interval between the 

 lateral processes ; length 1-8 mm. The cephalic part of the cephalo-thoracic 

 segment is considerably swollen at the insertion of the mandibles. .The 

 proboscis is stout and nearly cylindrical in form, *4 mm. in length, narrow- 

 ing abruptly to the rounded extremity ; mouth-aperture nearly circular. 

 It is inserted on the ventral surface, and projects considerably downwards. 



The oculiferous tubercle is short and blunt. The abdomen is short and 

 bluntly pointed, and is directed nearly straight upwards. 



The mandibles are robust and rather long ; the first joint reaches a 

 little beyond the extremity of the proboscis ; the 2nd is somewhat dilated 

 and bears a movable and a fixed claw, which are both narrow, pointed and 

 slightly curved, and are furnished with a row of small denticles on their 

 inner surface. 



Ovigerous legs slender, 2-4 mm. long ; the first three joints are short, 

 4th and 5th much longer, 6th only about half as long as the 5th. The four 

 last joints are subequal in length and somewhat curved, and bear 8 (or 7) 

 denticulated spines on their inner margins. On the last joint the spines are 

 all of a uniform oval shape, the last one being placed quite close to the 

 extremity of the joint. The three preceding joints have all the spines of the 

 same oval form, except the last of each series, which is curved outwards 

 and bears 3 or 4 long marginal teeth. 



