List of Shells Collected on the West Coast of Africa, etc. 337 

 Thyonidium Drummondii (Thompson). 



Thyonidium commune, Forbes & Goodsir. 

 Cucumaria communis, Forbes, Brit. Starf. 



Off Portincross a single specimen, 6-10 fathoms, Sept. 

 1885. 



Synapta digitata (Montagu), Miill. 



Chirodota digitata, Forbes, Brit. Starf. 



Abundant at low water in a sandy bay near the Castle, 

 Little Cumbrae. At low water, spring tides, between the 

 Allans, but rare (David Eobertson). 



Synapta inh^rens (0. F. MiilL), Eathke. 



Lamlash Bay, 20 fathoms (Herdman). Cumbrae, at low 

 water, among Zostera, and between Allans (David Eobert- 

 son). 



Synapta tenera, Norman. 



Firth of Clyde, not uncommon in mud, 15-40 fathoms 

 (Brady and Eobertson). Between Largs and Cumbrae. Ar- 

 dentinny. Loch Goil and Loch Long. Off Little Cumbrae. 



XXIV. List of Shells collected hy Mr John Eattray, B.Sc, 

 F.E.S.E., on the West Coast of Africa and the adjacent 

 Lslands. By William E. Hoyle, Esq., M.A. (Oxon.), 

 F.E.S.E., Correspondent of the Academy of Sciences 

 of Philadelphia. 



(Read 19th January 1887.) 



The shells enumerated in the subjoined list were collected 

 by Mr John Eattray during the recent cruise of the tele- 

 graph ship "Buccaneer." That the number is not much 

 larger must be attributed to the short time spent at each 

 calling place, as well as to the fact that his attention was 

 directed to the flora rather than to the fauna of the district. 

 A considerable quantity of surface collections were made at 



