176 Rey. A. M. Norman on the British Species of Typton. 
1849, Alpheus ruber, Bell, Brit. Stalk-eyed Crust. p. 271. 
1850. Alpheus ruber, White, Cat. Brit. Crust. in Brit. Mus. p. 88; and 
(1857) Pop. Hist. Brit. Crust. p. 112, pl. 8. fig. 3. 
1863. Alpheus ruber, Heller, Crust. des stidlichen Europa, 274. 
This species may at once be distinguished from the pre- 
ceding by the four longitudinal carine of the larger and 
greatly flattened hand. 
Three Cornish specimens of this species in my collection 
have the right hand the greatly developed organ; while a 
Mediterranean example and also that figured by Bell have the 
left the larger. 
The description of Cryptophthalmus ruber of Rafinesque 
and Desmarest appears to be partly applicable to the last spe- 
cies and partly to this. The words, however, “la plus grande” 
(main) ‘‘est & trois angles en dessous”’ cannot possibly be 
reconciled with A. megacheles, though they may be with A. 
ruber, 1f what Milne-Edwards speaks of as the outer side be 
viewed as the under. The Cryptophthalmus ruber of Costa is 
unquestionably a synonym of the last species, and not of this. 
Hab, Falmouth (Cocks), Polperro (Laughrin), Mediterra- 
nean (Milne-Edwards & Costa), Adriatic (Grube), Algerian 
coast (Lucas). 
Typton spongicola, Costa. 
ee Tupien spongicola, Costa, Fauna del Regno di Napoli, Crost. pl. 6 bis. 
os, 1-6. 
1856. Pontonella glabra, Heller*, Verhandlungen des zool.-botan. Vereins 
in Wien p. 629, pl. 9. figs. 1-15. 
1861. Alpheus Edwardsit, Couch, Proc. Linn. Soc., Zoology, vol. v. p. 210 
(but not Alpheus Edwardsii of Audouin, nor that of Milne-Edwards). 
1863. Typton spongicola, Heller, Crustaceen des sudlichen Europa, p. 254, 
pl. 8. figs. 12-17. 
1868. Typton spongiosus, Bate, Brit. Assoc. Rep. (1867) p. 283, pl. 3. 
fig. 1; and Ann. Nat. Hist. ser. 4. vol. ii. p. 119. 
The genus Typton differs from Alpheus in having the eyes 
free, and not concealed beneath the anterior portion of the 
carapace, in the second instead of the first pair of pereiopods 
being the more largely developed members, and in the mandi- 
ble being without an appendage, whereas in Alpheus it is fur- 
nished with a two-jointed palp. 
Seven or eight years ago, Mr. Laughrin, the intelligent 
coastguardsman of Polperro, found within the oscula of Jso- 
dictya palmata, procured off that coast, some shrimps. Mr. 
Couch gave an account of these in the Proc. Linn. Soc., 
naming them Alpheus Edwardsii, M.-EKdw. One of these 
specimens came into my hands; and having compared it with 
a specimen of 7ypton spongicola from the Adriatic, I found 
* Beitrag zur Fauna der Adria. 
