+ oe en es 2 oe CS ar 8 a ee ae 
THE HIGHER CRUSTACEA OF LIVERPOOL BAY. 249 
regularly spotted or speckled with bright crimson. 
11. Amphilochus manudens, Bate. 
As illustrating how little dependence can be placed on 
colour in the determination of species, I may mention that 
among several specimens taken at the same time all, except 
one, which was bright scarlet, were mottled with brown, and 
In one or two instances, almost entirely black. 
12. Pleustes glaler, Boeck. 
Pleustes (Paramphithoe) assimilis, G. O. Sars. 
Tt appears to be somewhat doubtful whether these are 
specifically distinct. The principal distinction is in the 
hinder angle of the third pleon segment, and this 1s vari- 
able in the few specimens I have, which seem rather refer- 
able to the var. assimilis. Myr. D. Robertson also suggests 
the identity of the two species.* I prefer to retain the 
older genus Pleustes, as expanded by Boeck, in place of 
Paramphithoe, for which there seems to be no necessity.+ 
13. Triteta dolichonyx, Nebeski. (PI. XVL., figs. 4 and 6.) 
I have little doubt that this is the adult male of 7. 
gibbosa (Bate). Only the males appear to have the cha- 
racteristic excavation in the anterior edge of the hand of 
the second gnathopods, and both Mr. D. Robertsont and 
myself (Puffin Island, on Compound Ascidians) have taken 
them associated with 7. gbbosa. It has been taken in the 
Adriatic and the Canary Islands. § 
14. Atylus falcatus, Metzger. || 
A. uncinatus, G. O. Sars (Oversigt af Norges Crust., p. 101, pl. v., 1882). 
A, falcatus, Hoek (Tijdschrift der Nederland. Dierk. Vereen, 1889, Deel 
ll., p. 26, pl. vii). 
* A Contribution towards a Catalogue of the Amphipoda and Isopoda of the 
Firth of Clyde. Trans. of the Glasgow Nat. Hist. Society, 1888, p. 94. 
+ ‘*Challenger” Report on Amphipoda. Stebbing, pp. 424—870. 
~ Stebbing l.c., p. 520. 
§ Walker, ‘‘ Proc. Liverpool Biol. Society,” Vol. IT., p. 130 (1888). 
|| Die wirbellosen Meeresthiere der ostfriesischen Kiiste, Hannover, 1871. 
