444 REPORT ON ZOOLOGY, MDCCCXLIV. 



half of it grooved with creuulate sulci, from Malacca. (Gueriu, Magas. pi. 

 99, 101 .) 



R,ecluz gives the Proclromus of a Monograph of the genus Erycina 

 (Rev. Zool. pp. 299, 325.) He refers to it the following eighteen living 

 species : E. DesJiayesii, new species, from New Holland, E. donacina, new 

 species, from the Antilles, E. Geoffroyi, Payr., E. corbuloides, Bivona, Bortiia 

 itifitffi, Philippi, Kellia suborbicularis, Turton, Peronia Laperousei, Desh., 

 E. nucleola, new species, from Cherbourg, E. thracierina, new species, from 

 Corsica, Montacuta jturpurea, Beau, E. semwula, new species, from the 

 Mediterranean, E. caroburtjenxis, new species, from Cherbourg, Montacuta 

 Indent ata, Turton, Montacuta oblonc/a, Turtou, Montacuta ferruginom, Turton, 

 E. Souleyetana, new species, from Brest, M. substriata, Turt., E.frands- 

 cana, new species, the Channel. Besides these, eleven fossil species. 



Amphidesma scabrum and zebtiense, from the collection of Mr. W. Metcalfe, 

 are described by Hauley (Proceed. Feb. 1844 ; Annals, xiv, p. 370), both from 

 Zebu Island. Moreover A. carnicolor, by the same, from the Philippines, 

 from Cumiug's collection. 



Corbula decussata, Deshayes (Guerin, Magas. de Zool. pi. 105) : elongated, 

 subequilateral, truncated posteriorly, beak obliquely keeled at the base. 

 Sumatra. C. crispa, Hinds (Proc. 27, Feb.), from the Philippines, C.adusta, 

 id., from New Zealand, C.procera, id., C. carnosa, id., without assigned 

 locality. C. thecoidea, Jonas (Meuke, Zeitsch. p. 185), from New Holland. 

 Twelve species of Corbula (Proceed. 18-43, p. 55) are figured in Hinds 

 (Sulphur). 



Choristodon, Jonas, nov. gen. (Meuke, Zeitsch. p. 185), is placed in the 

 family of the Lithophaga. Animal iguotum. Testa cardiue valvulse dextrse 

 dentibus tribus approximatis, sinistrse vero duobus et uno iutermedio 

 separabili ; lateralibus uullis. Ligameutum exteruum. Cli. typicum, from 

 St. Thomas. 



Saxicava Groenlandica , Potiez et Michaud (Gal.) : testa ovata, elougata, 

 subcyliiidracea, trausversa, pellucida, longitudinah'ter costata, hiante, epider- 

 mide teuuissima, pallescente, latere antico brevi, postico lougiore ; cardine 

 subunidentata, iutus nitide polita, albida. Greenland. 



Tliracht ontlis sm&fabula, Philippi (Enum. ii, p. 17), Galeomma ? compres- 

 sum Philippi (ib.) 



A Monograph of the genus Myodora, Gray, is given by Lovcll lleeve 

 (Proceed, p. 91.) He speaks, however, only of the shells, of which ten 

 species are described. They are figured in his Coiichologia icouica. 



Mittre has given (in Gueriu's Magas. de Zool. pi. 102-104) the anatomy 

 of the animal of Anatina hispida. The mantle is completely closed, except 

 a small anterior fissure for the passage of the foot, the two siphons are 

 united, and form an elongated fleshy mass, the orifice is contracted by 

 warty projections, and anterior to these are placed others, winch the author 



