REVISION OF L.M.B.C. AMPHIPODA. 441 



Ehos Bay ; Puffin Island ; Keel Wharf Bay, 20 f . , 8/6/89 ; 

 Port Erin, outside harbour; off Southport. Length 8 mm. 



PODOCEEID^. 



Ampliithoe ruhricata (Montagu) = A.jyodoceroides, Kath. 



= A. littorina, Bate. 



North Coasts of Wales to Holyhead and Isle of Man, 

 generally under stones between tide marks. Length 

 13 mm. 



Pleonexes gammaroides (Bate) ~ Sitnamphithoe gam- 

 mar oides. 



Moelfre Bay, Anglesea in rock pools among Laminaria 

 August, 1889 (F. Archer). Length 8 mm. 



Ischyrocerus minutus, Lilljeborg - Podocerus isopus, 

 Walker, Kep. III. and IV. 



Abundant in tidal pools in April, Khos and Colwyn 

 Bays ; Great Orme ; Puffin Island ; Menai Straits. 

 Colour whitish with broad transverse bands of reddish 

 brown in the females, and numerous small spots of the 

 same colour in the male. Length of adult male 5 mm. 

 This species w^as erroneously miited by Boeck wdth 

 P. anguipes (Kroyer) which caused me to make a new 

 species of it. Adult males are rare, and ovigerous females 

 vary greatly in size. Dredging just below low water 

 mark in Ehos Bay among stones on May 13, 1893 I took 

 more individuals of this species than of all the other {22) 

 species taken together ; some of the ovigerous females 

 measured 3|- mm. and others only 2 J mm. 



Podocerus falcatiis (Montagu) (PI. XIX., fig. 20). 



Ehos and Colwyn Bays ; Puffin Island ; Menai Straits ; 

 Port Erin Harbour ; between Holyhead and Isle of Man, 

 50 f., 20/7/89, a very large male 10 mm. long — the prop, 

 of second gnathopod being 4 mm. long — taken in a tow-net 

 on the bottom. Colour yellow with brown transverse 



