REVISION OF L.M.B.C. AMPHIPODA. 313 



Khos Bay; Puffin Island ; Bed Wharf Bay, 20 I, 8/6/89 ; 

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



Podocerim:. 



Amphithoe rubricata (Montagu) - A.podoceroides, 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) = Sunamphithoe gam- 

 mar oides. 



Moelfre Bay, Anglesea in rock pools among Laminaria 

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



Ischyrocerus minutus, Lilljeborg = Podocerus isopus, 

 Walker, Eep. III. and IV. 



Abundant in tidal pools in April, Bhos 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 was erroneously united by Boeck with 

 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 Khos 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 3j mm. and others only 2 J mm. 



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



Rhos 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 vellow with brown transverse 



