64 Transactions. — Zoology. 



secondary spine between the lateral and intermediate, and 2 

 or 3 between the intermediate and submedian spines ; in the 

 centre, between the submedian spines, the margin is notched, 

 the portion on each side of the median notch being convex, 

 and bearing 8-9 small secondary spines. Sixth abdominal 

 appendages (m-opods) large, the basal j)ortion produced into a 

 long flat spine, ridged below along the inner margin, and 

 reaching nearly as far backwards as the endopodite ; inside 

 tliis spine the basal portion bears 2 small spines on posterior 

 margin ; on the upper siu-face it also bears a spine at the 

 postero-distal angle. The endopodite is small and oval ; the 

 exopodite has the first joint nearly as lai'ge as the terminal 

 joint, and bears 5-6 spines on the distal portion of the outer 

 margin, the last two being long and curving outwards; terminal 

 joint oval, with a ridge running along the centre of the upper 

 surface. 



Colour, male gi'eyish, female with abdomen reddish. (For 

 fidler details see below.) 



Length of largest specimen examined, 3-6Siu. 



Hah. New Zealand and neighbouring islands. Also re- 

 corded from the Andamans (Wood-Mason). In New Zealand 

 this species is evidently widely distributed : llivk records it 

 from the Chathcirn Islands, Kapiti, and Waikauae ; Hutton's 

 t}-pe-specimen was obtained at the Auckland Islands ; Thom- 

 son's was from Port Pegasus, in Stewart Island, and in his 

 collection there is also a specimen from Waipapa Point ; I 

 have specimens fi"om Port Chalmers, and there is also a speci- 

 men in Dunedin Musemn from Otago Harbour. At the meet- 

 ing of the Hawke's Bay Philosophical Institute on 13th May, 

 1889, Mr. Hamilton exhibited specimens of this species'- from 

 the Napier district. 



In his report on the "Challenger" Stomatopoda, Brooks 

 has called special attention to the complicated structure on 

 the endopodite of the 1st abdominal appendage of the male, 

 and says that "if each description of a new species contained 

 a figm-e of this structure, the tracing-out of the generic relation 

 between the species would be greatly simplified" (p. 13). I 

 therefore give a description and also figures of tliis appendage 

 in Lij.iiosqiiilla spinosa. From these it will be seen that in 

 most respects it pretty closely resembles the corresponding 

 appendages of Li/siosquiUa maculata and L. excavatrix, as 

 described and figm-ed by Brooks, though his figm-es — especiallj^ 

 that of the former — are too small to allow of satisfactory com- 

 parison in detail. 



luLysiosfiuilla spinosa the endopodite of the 1st abdominal 

 appendage of the male (see PI. X., fig. 1) has the basal joint sub- 



* Tran?. N.Z. Inst., vol. xxii., p. 551. 



