188G.] SINGAPORK AND NEW ZEALAND. 5 



in this species is long, very much narrowed distaliy ; the telson is 

 divided beyond the centre. 



The following accounts of lalorchestia tumida and Amphithopsis 

 ccerulea, from New Zealand, were sent along with the specimens by 

 Mr. G. M. Thomson, their discoverer. His remark that in 

 Amphithopsis (P/terusal) ccerulea the 4th coxa is broader than the 

 preceding three together, applies to the appearance in the undis- 

 sected specimen, not to the coxse or side-plates when drawn apart. 



"2. TaLORCHESTIA TUMIDA, n. sp. 



General form of body, when seen from above, much inflated. Eyes 

 large (in living specimen of a turquoise-blue colour). 



Anterior antennce very short, reaching a little past the extremity 

 of the penultimate joint of the peduncle of the posterior pair ; 

 flagellum 7-8-jointed, subequal with peduncle. Posterior antennce 

 as long as cephalon and first two segments of pereion, last joint of 

 peduncle much the longest; flagellum 12-14-jointed, slightly shorter 

 than peduncle. 



Males apparently of two forms :— 



First Form. — First gnathopod with the propodos somewhat 

 curved, its inferior margin distaliy produced and rounded ; dactylos 

 curved and much longer than the palm ; carpus and propodos with 

 numerous spines. Second gnathopod with the carpus small and 

 triangular ; propodos ovoid and smooth, palm very oblique and 

 furnished with two rows of minute teeth ; dactylos two thirds as 

 long as propodos, with its point lying over the edge of the palm. 

 Third pereiopod short, fourth and fifth very long, former with the 

 bases not dilated. 



Second Form. — Second gnathopod with the propodos broadening 

 towards the distal margin, palm nearly transverse with a blunt tooth 

 between the middle and hinge of the dactylos ; latter furnished with 

 a large tooth impinging outside of the tooth of the palm. Third 

 and fifth pereiopoda normal : fourth with the the carpus nearly 

 quadrate and broadly dilated. 



Telson nearly as broad as long, quite round at the apex and 

 fringed above with a submarginal row of minute spines. Colour, 

 when alive, ivory-white. 



Hab. In sandbanks, Purakanui near Dunedin, among roots of 

 littoral plants, many yards from high-water mark. Each specimen 

 inhabiting a hole of its own. "When taken out they leap with great 

 vigour. 



"3. Pherusa (?) c^RULEA, n. sp. 



Colour of body a deep indigo-blue, appearing black when alive. 

 Length about 5 mm. Superior antennce about 4 mm. long, and 

 considerably longer than the inferior ; last joint of the peduncle with 

 a secondary appendage consisting of a single joint and a terminal 

 seta ; flagellum about three times as long as peduncle and very-many- 

 jointed. Inferior antennce about two thirds as long as superior, and 

 with the peduncle reaching slightly beyond the extremity of peduncle 



