1891.] LAND-SHELLS FROM BORNEO, 27 



Hemiplecta souleyetiann. 



Helix souleyetiana, Pfeiff. P. Z. S. 1851, p. 252; id. Monogr. 

 Helic. iii. p. 74 (1853), et v. p. 130 (1868); id. in Martini u. 

 Chemnitz, Conch. -Cab. ed. ii. p. 401, pi. cxliv. figs. 16, 17. 



Nnnina souleyetiana, v. Martens, Preuss. Exped. Ost-Asien, 

 Landschneck. p. 233 (1867) ; Issel, Ann. Mus. Civ. Geneva, vi. 

 p. 396 (1874). 



Issel says this is a doubtful species from Zamboanga. 



Hemiplecta donovani. 



Helix donovani, PfeifF. Zeitschr. f. Malak. 1851, p. 26 ; id. 

 Monogr. Helic. iii. p. 75 ( 1 853), et t. p. 1 30 ( 1 868) ; id. in Mart. u. 

 Chemn. Conch. -Cab. ed. ii. p. 413, t. cxlvii. figs. 8, 9. 



Nanina donovani, v. Martens, Preuss. Exped. Ost-Asien, Land- 

 schneck. p. 233 (1867). 



Hemiplecta (?) obliquata. 



Helix obliquata. Reeve, Conch. Icon. pi. Ixxiv. fig. 384 (1852) ; 

 Pfeiff. Monogr. Helic. v. p. 115 (1868). 



Nanina obliquata, v. Martens, Preuss. Exped. Ost-Asien, Land- 

 schneck. p. 235 (1867). 



Xesta obliquata, Semper, Reisen im Arch. Philippinen, Landmoll. 

 p. 67 (1870). 



Hah. Banghey Island {A. Everett). 



Hemiplecta (?) nobilis. 



Helix nobilis, Pfeiff. (non Reeve), P. Z. S. 1849, p. 126; id. 

 Monogr. HeHc. iii. p. 69 (1853), et v. p. 121(1868); id. in Mart. u. 

 Chemn. Conch. -Cab. ed. ii. p. 291, pi. cxxv. figs. 1, 2. 



Xesta nobilis, Semper, Reisen im Arch. Philippinen, Landmoll. 

 p. 67 (1870). 



Ryssota brookei. (Plate VI.) 



Helix brookei, Adams & Reeve, Zool. Voy. Samarang, Moll, 

 p. 60, pi. XV. figs. 4 a, 4 6 (1850) ; Metcalfe, P. Z. S. 1851, p. 70 ; 

 Reeve, Conch. Icon. pi. Ixxiii. fig. 377 (1852); Pfeiff. Monogr. 

 Hehc. iii. p. 52 (1853), et v. p. 81 (1868); Mart. u. Chemn. 

 Conch.-Cab. ed. ii. p. 350, pi. cxxxv. figs. 1, 2. 



Helix gigus, Pfeiff. Zeitschr. f. Malak. 1850, p. 81. 



Ryssota brookei, Wall. P. Z. S. 1865, p. 407. 



Nanina brookei, v. Martens, Preuss. Exped. Ost-Asien, Land- 

 schneck. p. 238 (1867). 



Nanina (Rhyssota) brookei, Issel, Ann. Mus. Civ. Grenova, vi. 

 p. 397 (1874). 



Ariopkanta brookei, Pfeiff. u. Cless. Nomencl. Helic. p. 55 

 (1881). 



Size : maj. diam. 80*0, min. 67'0 ; alt. axis 39*0 millim. 



The young shell, several of vyhich occurred in the collection sent 

 to the British Museum by Mr. Hose, and which, ovring to the 



