90 
A CORNISH FAUNA. 
larger size than described from the Mediterranean. One, not the 
largest measuring three inches from snout to tail, with antennse 
of the length of five inches.” 
This species has not been noticed in BelVs Crustacea. 
ALP HEAD M. 
Genus, Alpheus. — Edwards. 
Carapace covering the eyes. Second pair of antennco having 
two branches. First pair of legs being large, chelate. Second 
pair long, slender, multarticulate, minutely chelate. Three 
posterior j>airs simple. 
From the manner in which the anterior margin of the 
carapace covers the eye, it is evident that all the members of this 
genus dwell under the surface of the sea bottom. 
Alpheus ruber. — Edwards, Hisi. des Crust., t. ii, p. 231 ; Bell, 
Stallc-eyed Crust, p. 271. 
The late Dr. Cooks, of Falmouth, took the first specimen of 
this species on our coast, as recorded by Bell. It has since been 
taken off the Dodman in thirty fathoms of water. Also in 
Plymouth sound. Its more general habitat is on stony ground 
in about thirty fathoms of water. 
Its colour, salmon, and red at the joints. 
Alpheus Edwardsii. — We have taken several specimens of this 
species off the Dodman on stony ground, in about 30 fathoms 
of water. 
I am inclined to believe that the habitat was shallower than 
recorded. 
Genus, Ttpton. — Costa. 
„ Pontonella. — Heller. 
Eyes exposed beyond the carapace. First pair of legs equal 
slender, long, chelate. Second pair large, unequal, chelate. 
Typton spongiosum. — Spence Bate. Report of Devon and Cornish 
Fauna, Brit. Assoc., 1867,^. 283. 
Several specimens of this species were found inhabiting a 
sponge in about four fathoms of water, on stony ground off 
Plymouth sound. 
The Rd. Merle Herman, Annals, Nat, Hist., considers this 
species to be identical with Costals species from the Mediter- 
ranean. 
