CRUSTACEA. i'.n.) 



in some of its characters to connect this genus with Cirolana ; it is at 

 once distinguished from R. orientalis by the form of the eyes, which 

 are confluent in the middle line of the head. Specimens are in the 

 British-Museum collection from the north-eastern coast of Australia, 

 but no special indication of locality remains, nor any record as to 

 how they were obtained. 



In Dr. Goppinger's specimen, and in that from the Gulf of Suez, 

 the front is somewhat more broadly rounded than in the figure of 

 Schiddte and Meinert (Nat. Tidsskr. p. 395, pi. xiii. figs. 1-2, 1879). 

 In the smaller specimens from Ceylon the antennae have a fewer 

 (10-12) jointed flagellum. I doubt therefore the constancy of the 

 number of the joints of the antenna! flagellum as a character for 

 separating the species ; but not having examined specimens of several 

 of the new forms described by Schiodte and Meinert, I will not 

 express myself upon this point with certainty. 



There is in the British-Museum collection a species of JEga very 

 nearly allied to &ga cyclops, Haswcll, from Port Jackson, but which 

 seems to be sufficiently distinguished by having the body very coarsely 

 punctulatcd, the epimera of the fourth to seventh segments only sub- 

 acute and (the last excepted) scarcely prolonged beyond the posterior 

 margin of the segments ; and particularly by the form of the ter- 

 minal postahdominal segment, which is truncated, not rounded, at its 

 distal extremity ; the outer ramus of the uropoda is ovate but not 

 acute, the inner squarely truncated at its distal extremity ; the distal 

 process of the peduncle extends considerably beyond the middlo of 

 the inner ramus. This species, of which a single male is in the col- 

 lection from King George's Sound (F. M. Rayner, H.M.S. ' Herald'), 

 I propose to designate ^Er/a meinerti. In the confluent eyes 

 and the form of the terminal segment it somewhat resembles 

 the North-European and Arctic Alcjci crenulata, Liitken, but tho 

 posterior prehensile limbs are without the cultriform process charac- 

 teristic of that species and JEya ivebbii. 



8. Cymodocea longistylis. (Plate XXXIII. fig. C.) 



Convex oblong-ovate, as usual in the genus. Head and first three 

 segments of the body indistinctly punctulated ; the fourth to seventh 

 segments granulated, the granules arranged in two transverse series, 

 and most distinct on the two posterior segments. First segment of 

 the postabdomen with a transverse line of granules (like those of the 

 thoracic segments, but larger) and with other granules posterior to 

 it, and with a prominence on either side of the middle line on its 

 posterior margin ; terminal segment also very distinctly granulated 

 and somewhat hairy, and with two elevated prominences on its 

 upper surface, behind which, and near to the distal extremity, is a 

 much less elevated and more rounded prominence ; terminal notch 

 quadrangular, and with an oblong distally truncated median lobe. 

 The median frontal process is subtriangulate ; the postero-lateral 

 angles of all the segments of the body are acute, except those of the 



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