1873.] F. Stoliczka — Land-shells of Penang Island. 29 



supera tenui, hand usque ad marginem peristomatis interni extensa, intus in 

 fauce rapide evanescente, columellari approximata, fortiori, valde obliqua • 

 plicis palatalibus circiter decern, supera longissima, a margine distante, dua- 

 bus vel tribus sequentibus multo brevioribus, cseteris brevissimis, omnibus 

 inter se irregulariter dispositis. Long. 21'2, lat. 4*4 ; long, apert. cum 

 perist. paulo imperfecto 4'8, lat. 3"6 m.m. ; specim. secundi apert. cum perist. 

 perfecto 5*3 longa et 4 m.m. lata. 



Hah. — Penang hill, cum precedente, sed rarissima. 



This species is very closely allied to Gl. Javana, Pfr., but the latter has 

 the whorls, particularly the middle ones, somewhat higher, the transverse 

 costulation is a little finer, and more crowded, the palatal plaits are fewer, 

 two according to Kiister, three to four according to E. v. Martens ; it also 

 appears to have the two labial plaits stronger. I do not know any other 

 species with which the Penang shell can be compared. It appears to be 

 extremely rare ; out of three specimens found only one has the aperture with 

 the margins perfectly well developed. 



Fam. Philomycidse. 

 Binney and Bland, Land and fresh-water shells N- America, pt. I, 1869, p. 294. 



Genus. Philomyciis. 



1820. Eafinesque. Comp. ' Complete writings,' by Binney and Tryon, 1864, 

 p. 64. 



1821. Fenissac, Tabl. syst. des Limaces, p. 14. 



1823. Meghimation, Hasselt, Algem. Konst. &c., p. 232 ; idem, Fer,, 1824. 



1842 (August). Bicillaria, Benson, Ann. and Mag. Nat. Hist. vol. ix, p. 486. 



1842 (Septb.). Tehenophorus, Binney, Boston Journal, iv, p. 171, and 1844, 

 Wyman, ibidem p. 410. 



1866. PhilomyciLs, (anatomy of) Keferstein, Zeitsch. Wissensch. Zool., vol. xvi, 

 p. 183. 



1866. Incillaria and Meghimatium (anatomy of), Keferstein, Malacoz. Bleetter, 

 vol. xiii, p. 64. 



1869. TehenopJiorus, Binney and Bland, Land and Fresh water shells N. Am. 

 pt. I,Pulm. G^cph., p. 295. 



Philo7nycus apud H. and A. Adams, Chenu, E. v. Martens &c. 



It must be admitted that the original characteristic of the genus by 

 Rafinesque is a very unsatisfactory one, but that is the case with many other 

 old definitions. When Rafinesque wrote that JPhilomi/cus has no visible 

 mantle, everybody* could, I think, fancy that the mantle must extend over 



* Binney writes in 1841 (Boston Journ. TV, p. 174) of his Philomyciis dorsalis 



corpore clypeo nullo,' and on p. 171 of TebenopJiorits caroUnensis * clypeo lato et 



elongate, dorsum integrum vestiento,' and still both species have the mantle covering 

 the entire upper surface of the body, and both are Philomycus (or Pallifera of Morse). 



