THE HIGHER CRUSTACEA OF LIVERPOOL BAY. 247 



yet he makes the difference between the above two species 

 largely to depend on the number of joints in it. Until it 

 is proved more clearly than it seems to be at present, that 

 there is more than one species having the characteristic 

 raised lateral line on the carapace and free thoracic seg- 

 ments parallel with the dorsal outline, I must incline to 

 the opinion that both the above species should be referred 

 to C. scorpioides (Montague). It is to be noted that the 

 two species of Goodsir are evidently both straw-coloured, 

 which does not agree with Bars' definition. 



5. Lamprops fasciata, Sars.* (PI. XYI., figs. 1-3.) 

 Several specimens were taken, mostly females. The 



largest female measured 7 J mm. from point of rostrum to 

 tip of telson. Sars, who describes the female only, gives 

 4 J mm. as the length. In the male the carapace equals 

 in length the first three thoracic segments. The lower 

 antennae reach to the end of the second free thoracic seg- 

 ment ; the peduncle is thick and densely furred on the 

 upper side. This species resembles Pseudocuma cercaria 

 in having three oblique striae or folds on the sides of the 

 carapace, but it may be at once distinguished by its well 

 developed telson and larger size. The peduncle of the 

 uropoda has eight spines on the mner margin, of which 

 the six distal are compound, i.e., are themselves spinous. 

 It has been taken by Mr. D. Eobertson in the Firth of 

 Clyde, and at Tarbert, Loch Fyne. 



6. Diastylis spinosa, Norman (Brit. Ass. Eeport, 1868, p. 271.). 



Diastylis himarginatus, Bate (A. & M.N.H., ser. 5, vol. i,, p. 409, and cut). 

 ,, ,, Sim ( ,, ser. 5, vol. ii., p. 453, pi. xviii). 



D. hradyi, Norman (Ann. and Mag., N.H., ser. 5, vol. iii., p. 59). 



There can, I think, be no doubt that D. hradyi is the 

 female of D. spinosa. Although adult males are rare, yet, 



* Cm den aberrante Krebsdyrgi'uppe Cumacea, &c., p. 191 ; and Norman, 

 Ann. and Mag. N. H., 1887, p. 100. 



