200 
HISTORY OF BRITISH CRUSTACEA. 
Gen. 97. AMPHITHOE, Leach. 
Upper antennee the longest, without a bristle at the base 
of the fourth joint. Tail above without bundles of spines. 
Hands ovate or filiform. Eirst and second pairs of legs 
subcheliform. 
Mr. Bate remarks that the species of this genus “ build 
nests made of weed and material of their own secretion.” 
Amphithoe rubricata. Montagu’s Coast Screw . — -Body 
slender, usually reddish, or pale pink, minutely and closely 
speckled with darker spots of the same hue. Hands ovate, 
without notch. 
South coast of Devon (Montagu) ; Strangford Lough 
(Hyndman and Thompson) ; Springvale, Down (Thompson) . 
Amphithoe littorina.* Johnston’s Coast Screw . — Body 
smooth, olive-green, speckled with minute black dots ; back 
of segments deeply punctured; a deep semilunar fissure 
between wrist and hand. 
Near Berwick, amongst Conferva , in pools left by the 
tide ; also Springvale, Down, Ireland. It lives, says Dr. 
Johnston, in a furrow from one to two inches long, com- 
# Gammarus punctatus , Johnston, Zool. Journ. iii. pp. 197 and 490; 
the specific name preoccupied by Say, so it has been altered by Mr. Bate. 
