192 Transactions. — Zoology . 



Legs equal in size and similar in form. First joint short, expanding 

 distally ; second very short, as broad as long ; third long, rather slender ; 

 fourth short ; fifth about as long as the third, slender ; sixth about half as 

 long as the fifth, end oblique, no hooks of any kind distinguishable, only one 

 or two short seta? at the end of the joint. All the legs almost entirely free 

 from setne. 



Bo'strum short, no palpi visible. "When seen from below it appears to 

 arise out of a circular depression bordered by a stiff fringe. The rostrum 

 appears to contain lancet-shaped organs of some kind, but nothing more 

 can be made out without dissection. Colour, brown. 



Length, about y 1 ^ of an inch. 



Hab. Lyttelton Harbour, between tide-marks. 



EXPLANATION OF PLATE XXIIb. 

 Fig. 1. Halacarus parvus, from above X 40. 



la. „ ,, rostrum from above X 120. 



lb. ,, ,, end of one of the legs X 244. 



2. Halacarus truncipes, from above X 30. 

 2a. „ ,, rostrum from below x 72. 



Akt. XVIL-t- Occurrence of a Species of Ophideres, Boisd., new to New 

 Zealand. By B. W. Fereday, M.E.S.L. 

 [Read before the Philosophical Institute of Canterbury, 30th November, 1882.] 

 On the 13th March last a boy brought me a moth found fluttering in the 

 grass in the yard at the back of my office in Colombo Street, Christchurch. 

 It was alive and vigorous when handed to me, but, unfortunately in a very 

 dilapidated condition, the forewings almost entirely denuded of scales, and 

 the exterior margin of both wings frayed and jagged. 



The moth precisely resembles — so far as the dilapidated state of the 

 forewings admits of comparison — the Ophideres archon of Felder figured in 

 Beise der Novara, Lep. 4, pi. cxiii., fig. 3. 



In all probability it has been introduced in some way, and is not an 

 indigenous species. Felder's specimen appears to have been taken in Siam. 



The following is a description of the insect : — 



Female. — General colour of body and appendages ochraceous and pale 

 ferruginous grey ; eyes large and prominent; palpi recurved, and ascend- 

 ing above the head the length of the third joint, third joint half the length 

 of the second, clavate, resembling a drumstick, the nob black tipped with 

 pale ochraceous, second joint densely clothed, the underside velutinous ; 

 proboscis robust, of moderate length ; antenna? simple, rather more than 



