GAMMARUS. 
185 
South coast of England (Dr, Leach) ; Plymouth (Mr. 
Spence Bate) ; Belfast (Mr. Thompson). 
Gammarus brevicaudatus, Edwards. — Lower antenna 
not reaching to the end of the peduncle of the upper. 
Last pair of caudal stylets extremely short. 
Plymouth (Mr. Spence Bate). 
Gammarus grossimanus, Montagu. — When alive, pale- 
yellow, sometimes mottled with pink. Hands of second 
pair of jaw-feet large, ovate, compressed ; the fangs long 
and hooked, folding on the edge of the hand. Length five 
lines. 
Rocky shores; common in pools left by the receding tide. 
Devonshire and Berwick, Plymouth. 
Gammarus xn^equimanus, Spence Bate.— -Second pair 
of jaw-feet with the left hand four times as large as the 
right. A dorsal spine on the eleventh segment after the 
head, and two smaller placed laterally on the next. 
Polperro (Mr. Loughrin). 
Gammarus ? pallidus, Spence Bate. — Upper antenna 
shorter than the lower. Hands large, with last joint well 
developed and fringed internally with teeth. 
Plymouth (Mr. Spence Bate). 
