PHYLLOBKAXCHIATK CRUsTACF.A-.M VCkl-R.V. 1. 15 



mavgiii three or four little tufts of hairs. The third maxillipeds are long, pcfliform, and 

 rather large; the terminal joint ends in an acute apL'x. The length from the apex of 

 tlie frontal spine to the extremity of the telson is 37 mm. The telson is remarkahle on 

 account of the triangular form of its apex ; it l)ears three pairs of small spines, of whieli 

 one is very much reduced and scureely visihhi. 



" This species, which I collected at low water in the rock-pools, appears to me to he 

 rather ahundant. It occurs, without any indication of its hahitat in New Zealand, in 

 the collections of the Museum of Paris. The development of the suborhital spines 

 enables it to be recognized at the first glance." 



Habitat. Lyall's Bay, Wellington {FUhol). 



Didrihidion. Confined to New Zealand. 



1 have not met with this species. 



Spence Bate suggests that J/, oriculalis, one of the ' Challenger' species desci-il)od by 

 him, and which was taken off New Guinea in GUO fathoms, is the same species. 



Genus 4. Nauticaris, Bate, 1888. 

 'Challenger' :\r;uTura, p. 602. 



1. Naiticaris STEWAirrr, G. M. Thomson. (Plate 29. tig. 1.) 



1888. Hippoh/te Sfm'nrti, G. ]\L Thomson, Ti-ans. N.Z. Inst. xkI. p. 2:,<.), pi. i:*.. fig. 1. 



Cara]jace relatively deep, depth nearly equal to half its length ; suriace smooth ; 

 suhocular spine well developed ; infero-anterior margin produced into a small spine, 

 nostrum very acute, ahout as long as the rest of the carapace; upper margin with six 

 prominent teeth, lower produced deeply and with two acute teeth. 



Pleon with the third to the fifth segments jjroduced l)ackwards on their lower margins 

 into acute teeth ; sixth segment also produced back into an acute tooth on either side 

 ahove the lower margin, which hears the characteristic movable spine. 



Telson narrow-oval ; apex rounded, liearing tAvo spines and a number of slender 

 setfE. 



Ophthalmopods short and thick ; eyes occupying the slightly dilated upper half. 



Pirst antenme have the basal joint loiiger than the next two together; stylocerite 

 reaching to extremity of the second joint ; inner flagellum not nuich longer than the 

 peduncle, considerably stouter than the outer. 



Second antenme with a slender peduncle, equalling that of the first pair in length ; 

 flagellum ? (missing); scaphoeerite twice as long as the peduncle, very narrow and 

 tapering, the spine reaching beyond the foliaceous plate. 



The mandililes, maxilkie, and maxillipeds clost^y resemble tlic same organs in 

 y. mafioiiis as figured by Spence Bate ('Challenger' ^[acrura, pi. lO'^). 



The pereiopoda are similar to those of 3'. marionis. In the second pair the carpos is 

 li-15-jointed. In the succeeding pairs the claws are all didaetyle. 



