TiTO Pr"f. A. Alfoi-k on the J )lstrihulion of 



Eastern Asia, from the Hay (if Hengal to Japan and Australia. 

 On the otli'r hand, two species oeeur in the ^Mediterranean, 

 and one ott' the West Coast of Africa (Cape A'erde to the 

 Conffo). One of the connnonest Indo-Pacific species 

 (/). (lorsipes, L.) is also met with off the east coast of 

 Africa. 



2. Ethusa, Roux. — This genus consists of 14 species, and 

 though f()\ind in the ]\lediterranean and in some parts of the 

 "Western Hemisphere, in quite shallow water (13-2(i fathoms), 

 commonly lives far down the submarine slopes between 200 

 and 1200 fathoms. The species are found off the west coast 

 of Tropical America, from the Gulf of California to the Cocos 

 Inlands (Panama): in the region of the Gulf of Mexico, from 

 Florida to the Antilles, and also further north off the south 

 coast of New England ; in the Eastern Atlantic in the 

 neighbourhood of the Azores and Canaries ; in the Mediter- 

 rcnean Sea and its Atlantic gate : and in Oriental Seas, 

 from the Arabian Sea to Fiji. 



3. IvniusiNA, S. I. Smith, — Seven (or six) species are in- 

 cluded in this genus and, among crabs, thev are the deepest 

 dwellers of any known, going down to abysses of nearly 

 2200 fathoms, although one — E. SmitJiiana, Faxon — has been 

 taken in 131 fathoms. They have been dredged off the 

 tropical Pacific coast of America, between the Galapagos ami 

 Cocos and the mainland ; off the east coast of the Northern 

 United States of America, as far as 38° 53' N.; in the 

 neighbourhood of the Azores, of the western coast of 

 Morocca, and of the Cape Verde Islands ; in the Aral)ian 

 and Andaman Seas, and in the depths of the land-bound 

 basins of the East Indian Archipelago ; and oft' Japan, in 

 34° 37' N. According to Faxon, two of the Eastern Pacific 

 species are identical with two from the western confines of 

 the same ocean. 



4. Tymolus, Stimpson, is represented by a single species 

 found in sliallow water oft" Japan, about lat, 42° N. The 

 genus is imperfectly known, but it appears to connect 

 Dorippe and Ethiim with Ci/clodorippe and Ci/moiwmops. 



5. Cvcr.onouirri:, A. Milne-Edwards. — This genus for the 

 present embraces five suljlittoral species, of which three occur 

 in the West Indian region, from Florida to Trinidad, in 50 

 to 357 fathoms, while the other two are found in Japan 

 between 35 and 200 fathoms. According to Bouvicr, two of 



