,SYKES : EEVIEW OP THE GENUS PLECOTEEMA. 245 



' 13. F. Binnexji, Crosse. Journ. de Conch, xv. (1867), p. 448. 

 Hob. — Peron Peninsula, W. Australia (Bryce Wris'lit). 



14. P. Siamense, Morelet. S6r. Concli. iv. (1875), p. 273. 

 Hab. — Siam (Morelut). 



15. P. punetigerum, H. and A. Adams. Proc. Zool. Soc. 1853 

 (1854), p. 120. 



Dr. Mdllendorff describes ^ a var. 7najor from Macau. 



Mab. — Borneo, Vizagapatam (Mus. Cuming), Singapore (PfeifEer), 

 Siam (Morelet), Vaico, Cochincliina (Crosse and Fischer), Macau, 

 Swatow (Mcillendorff). 



16. P. imperforatum, H. and A. Adams. Proc. Zool. Soc. 1853 

 (1854), p. 120. 



I regret to have to unite P. Cumingiantim, W. T. Blanford,^ with 

 this species, of which the original specimens are execrable, but I am 

 unable to see any distinction between them. 



Hab. — Mindanao (Hidalgo), I. of Negros (Mus. Cuming); as 

 P. Cumingianmn, Irawady Delta (Blanford). 



17. P. mmutum, Mollendorli. Jahrb. Deutsch. Malak. Gesel. xii. 

 (1885), p. 351. 



Jlab. — Hong-Kong (Hungerford and Schmacker). 



18. P. Cubense, Pfeiffer. Malak. Blatt. 1854, p. 153. 



Mab. — Cardenas, I. of Cuba (Pfeiffer), Havana, Matanzas, etc. 

 (Arango). 



19. P. ciliatum, Tate. Proc. Roy. Soc. S. Austral.^ vol. ii. (1879), 

 p. 135, pi. V. fig. 7. 



Hab. — Port Adelaide, Streaky Bay, S. Australia (Tate). 



Dr. von Mollendorff has described* a Cassidula plecotrematoides, 

 which, but for his opinion to the contrary, I should have placed in 

 Plecotrema. 



The few fossil species with which I am acquainted are as follows : — 



20. P. antiquum, nom. nov. 



Synonym : P. minuta, Briart and Comet (Mem. Acad. E.. Belg. 

 1889, xlvii. p. 101), non Mollendorff (1885), 

 Form, et loc. — Calcaire Grossier at Mons. 



21. P. ovale, Briart and Comet. Mem. Acad. R. Belg. 1889, xlvii. 

 p. 102. 



Form, et loc. — Calcaire Grossier at Mons. 



22. P. turbiniforme, Briart and Comet. Mem. Acad. R. Belg. 

 1889, xlvii. p. 102. 



Form, et loc. — Calcaire Grossier at Mons. 



23. P. conicum, Briart and Comet. Mem. Acad. R. Belg. 1889, 

 xlvii. p. 104. 



I leave this and the last species in Plecotrema with some doubt, but 



^ Jahrb. Deutsch. Malak. Gesel. xii. p. 351. 

 2 Journ. Asiatic Soc. Bengal, xxxvi. (1867) p. 65, pi. ii. fig. 16. 

 ' Vols. i. and ii. of this work appear to have escaped the notice of Prof, von 

 Martens when working at the Zoological Record. 



* Jahrb. Deutsch. Malak. Gesel. xii. p. 352, pi. ix. fig. C. 



