366 



MANUAL OF THE MOLLUSCA. 



„ exigua. 

 Eissoa conus. 



„ climidiatus. 

 Bullina Ustuertensis. 



The following species are described by Eichwald, from the steppe lime- 

 stone. (Mnrchison, Russia, p. 297.) 



"Paludina" Triton. Donax prisons. 



Mactra Caspia. Monodacna propinqua. 



„ Karagana. „ intermedia. 



Cyclas Ustuertensis. ,, Catillus. 



Mytilus rostriformis. Adacna prostrata. 



No other inland bodies of salt water are known to have peculiar marine 

 shells ; those of the modern deposits, in Mesopotamia (at Sinkra and Warka), 

 collected by Mr. W. K. Loftus, are species still abounding in the Persian 

 Gulf. * 



VI. West Afkican Province. 

 The tropical coast of Western Africa is rich in conchological treasures, 

 and far from being wholly explored. The researches of Adanson,t Cranch 

 (the naturalist to the Congo expedition:|:), and the officers of the Niger 

 expedition, have left much to be done. Dr. Dunker has described 149 

 species in his Index Moll. Guinece, coll. Tarns. Cassel, 1853. 



At St. Helena, Mr. Cuming colleeted 16 species of sea-shells, 7 of them 

 new. Litorina Helenee is found on the shore of St. Helena, and L. miliaris 

 and Nerita Ascensionis, at Ascension. 



West African Shells. 

 Onychoteutbis, 3 sp. Lagena nassa. Cypr^ea picta. 



Crancliia, 2 sp. Terebra striatula. Yei-metus lumbvicalis. 



Strombus rosaceus. ,, ferruginea. Cei-itbium Adansonii. 



Triton ficoides. ?Halia priamus. Turritella toriilosa. 



Eanella quercina. Mitra nigra. Mesalia. 



Dolium tessellatum. Cymba. Litorina punctata. 



Harpa rosea. Marginella. Collonia. 



Oliva biatula. Persicula. Clanculus villanus. 



Pusiouella. Pleurotoma mitriformis. Haliotis virginea. 



Nassa Pfeifferi. Tomella lineata. ,, coccinea. 



-Desmoulinsia. Clavatula mitra. Nerita Senegalensis. 



Pui-pura nodosa. „ coronata. „ Ascensionis. 



Eapana bezoar. ,, bimarginata. Pecten gibbus. 



Murex vitulinus. ,, virginea. Ai-ca ventricosa. 



,, angolaris. Conus papilionaceus. „ senilis. 



,, megaceros. ,, genuinus. Cardium ringens. 



„ rosarius. „ testudinai-ius. „ costatum. 



,, duplex. „ acbatinus. Lucina columbella. 



„ cornutus. „ monacbus. Ungulina rubra. 



Clavella ? fllosa. Natica fulminea. Diplodonta rosea. 



„ afra. Cypraea stercorai'ia. Cai'dita ajar. 



* A species of coral {Porites elongata, Lam.) now living at the Seychelles has been 

 said to be found in the Dead Sea. (v. Humboldt's Views of Nature, Bohn, ed. p. 260.) 



+ Hist. Nat. de Senegal, 4to. Paris, 1757. This able but eccentric naturalist 

 destroyed the utility of his own writings by refusing to adopt the bi-nomial nomen- 

 clature of LiNNJEUs, and employing instead the most barbarous chance-combinations 

 of letters he could invent. 



X Appendix to Capt. Tuckey's Narrative (1318), by Dr. Leach. 



