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Transactions. 



of the palp of the first maxilla is, of course, a character possessed by many 

 of the species of Orchestia, Talorchestia, &c. The large chelate second 

 gnathopod in the male is strikingly different from that of any of the 

 species of Hyale or allied genera, but is found only in the male, the second 

 gnathopod of the female being of the usual subchelate character. 



Ceina egregia (Chilton). (Figs 1 to 25.) 



Nicea egregia Chilton, 1883, p. 77, pi. 2, fig. 2 a-l. Ceina egregia 

 Delia Valle, 1893, p. 530, pi. 58, figs. 14-21. Ceina egregia Steb- 

 bing, 1906, p. 554. 



As there is only one species of the genus at present known, it is impos- 

 sible to give a separate specific diagnosis. A detailed description of the 

 animal and of the different appendages is given below. 



Colour usually dark red, sometimes greenish or bluish ; appendages and 

 extremity of bocly often white, or partly white and partly red. 



Length of either sex about 6 mm. or 7 mm. 



Localities : Cape Maria van Diemen (T. B. Smith) ; Tauranga (W. R. B. 

 Oliver) ; Lyttelton (C. Chilton) ; Shag Point, Otago (W. R. B. Oliver). 





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Fig. 1. — Ceina egregia ; side view of malt 



Remarks. — The animal is found at the roots of kelp and on various sea- 

 weeds, generally about low-tide mark, and when disturbed remains still or 

 moves only slightly. By its shape and colour it is often difficult to detect 

 as it lies partially coiled up on the seaweed. The dark colour does not 

 usually cover the whole body, and its outline being different from that 

 of the body itself the concealment of the animal is thus made more 

 perfect. 



The colour of different specimens varies considerably, and shows many 

 irregularities, all tending, however, to conceal the animal. Of one female 

 specimen from Lyttelton, collected 16th January, 1906, I have the following 

 note as to its colour : " Colour greenish, shading into pink, patchy, with 

 darker dots on legs, &c. ; antennae with bases white, and then with 



