REVISION OF L.M.B.C. AMPHIPODA. 431 



Sijnchelidium haplocheles (Grube, not G. 0. Sars) = 5'. 

 hrevicarpum, Sars. 



Little Orme ; Port Erin and Kamsey Harbours at 

 electric light; off Port Erin, ''John Fell," 8/7/94. 22 f. 

 Length 3 mm. The dark markings on the body segments 

 is the most easily seen distinction between this species 

 and the precedmg. 



Paramphithoid^ . 



ParampJiitJwe hicuspis (Kroyer). 



Dee to Menai Straits, shore to 17 f . ; between Holyhead 

 and Isle of Man 40 to 60 f., 20/7/89 ; Towyn, Anglesea ; 

 10 to 17 m. N. W. of Mersey Bar, 27/9/90. Length 12 mm. 



A common species on the N. coast of Wales but not 

 met with hitherto on the Isle of Man coast. It is variable 

 in colour, generally closely freckled with brown but some- 

 times almost pure white. I cannot regard P. monocuspis, 

 Sars, as anything but the young of this species, as I 

 have constantly taken them together and always observed 

 that only the largest specimens have a dorsal tooth on the 

 first pleon segment and this varies in length in proportion 

 to the size of the specimen. 



Paramphitlioe assimiUs, Sars. {Pleustes glaher, Kep. 

 IV., p. 241.) 



Puffin Island, shore ; Great and Little Orme's Heads ; 

 10 to 17 m. N.W. off Mersey Bar; Calf Sound; Menai 

 Straits 10 to 12 f., 2/4/94; off Blackcombe. Colour green- 

 ish white sparingly mottled with brown. Length 5J mm. 



Stenopleustes nodifer, Sars. 



Little Orme and Khos Bay, 4 to 7 f., April and July, 

 1893 ; 7 miles W. of Bradda Head, 31 f., 25/4/95. 



The " nodiform projections" in the specimens taken 

 were reduced to a mere emargination of the hind margin 

 of the two anterior segments of the pleon. The limbs 



