114 Messrs. Brady and Robertson on the 



protliorax brownish black ; the front and hind margins of 

 the latter reddish brown, rather coarsely and closely punctured 

 and nigose ; the punctures most crowded on the front and epi- 

 stoma of the former, which are also unisulcate down the centre : 

 prothorax distinctly wider than long, subcordiform, a little 

 depressed and unequal by slight irregular depressions : elytra 

 pale brown, with a yellowish tinge, closely punctured and 

 rugose : underside reddish brown, pubescent, finely and not 

 closely punctured ; legs and palpi pale yellow ; antenna 

 brown. 



Length 3| lines. 



Hah. New Zealand. One example. 



XV. — Contributions to the Study of the Entomostraca. 

 ' By Geoege Stewaedson Beady, C.M.Z.S., and David 



ROBEETSON, F.G.S. 



No. IX. On Ostracoda taken amongst the Scilly Islands^ and 

 on the Anatomy of Darwinella Stevensoni. 



[Plates IV. & v.] 



In undertaking a dredging excursion to the Scilly Islands, 

 concerning the marine fauna of which we were unable to ob- 

 tain previously any very accm-ate information, we anticipated 

 finding, at any rate in the more sheltered nooks of that archi- 

 pelago, a field of exploration comparable in character and f 

 richness to many of the better-known hunting-grounds of the ( 

 south and south-west of England. In this, however, we were | 

 disappointed. In no part did we find any great profusion of f 

 animal life, and on the whole the district impressed us as ' 

 being the most barren and hopeless for the purpose of dredging 

 of any which we have hitherto explored. Our stay at St. Mary's 

 was cut short by the sudden advent of stormy weather ; but 

 we nevertheless obtained dredgings from many of the most 

 promising spots in the neighbourhood of the principal islands ; 

 nor do we believe that a protracted visit would have materially 

 altered the character of the .result. We propose in this place 

 to record the marine Osti-acoda which occurred in the various 

 dredgings ; and we may also state that an examination of the 

 fresh- and brackish-Avater ponds on the islands of St. Mary 

 and Tresco did *not afford any other than species commonly 

 found in such localities in England. 



The number of species of marine Ostracoda is sixty-seven, 

 of which three (or four ?) are new to science ; but the general 



