CLAUSILIA. 333 



Clausilia bulbus resembles a large ovata, but the striae are much 

 coarser and farther apart, and there are a few coarse distant 

 spirals, while the last whorl becomes more attenuated behind the 

 peristome. The only shell of bulbus I have seen is from Moulmain 

 in the National collection ; it is 25 mm. in length, the penultimate 

 whorl measuring 9-5 and the last whorl 5'5 mm. This species, 

 C. philippiana and O. ovata constitute a natural group, character- 

 ized by the very convex spire and the very obtuse apex. 



294. Clausilia philippiana, Pfeiffer. 



Clausilia philippiana, Pfeiffer, Zeits. Malak. iv, 1847, p. 69 ; ibid., 



Mon. Helic. Viv. ii, 1848, p. 423 ; ibid., Conch.-Cab., Clausilia, 



1850, p. 100, pi. 11, figs. 7-9 ; Hanley & Theobald, Conch. Tnd. 



1875, pi. 118, fig. 10 ; Sowerby, Conch. Icon, xx, 1875, Clausilia, 



pi. 4, fig. 35. 

 Clausilia (Ph<edusa) philippiana, Adams, Gen. Rec. Moll, ii, 1855, 



p. 184 ; Pfeiffer, Malak. Blatt. ii, 1856, p. 180 ; von Martens, 



Die Heliceen, ed. 2, 1860, p. 275. 

 Clausilia (Phedusa) philippiana, Stoliczka, J. A. S. B. xl, 1871, 



p. 174, pi. 6, figs. 7-10 (anatomy). 

 Clausilia (Oospira) philippiana, Blanford, J. A. S. B. xli, 1872, 



p. 205, pi. 9, fig. 14 : Kobelt, Conchyl. Buch, ii, 1878, p. 289, 



pi. 86, fig. 29 ; Tapparone Canefri, Ann. Mus. Civ. Geneva, 



ser. 2, vii, 1889, p. 329. 

 Clausilia (Phaedusa ( Oospira)) philippiana, Boettger, Ber. Offen- 



bacher Ver. Naturw. 1878, Mitt. p. 56; Pfeiffer & Clessin, 



Nomencl. Helic. Viv. 1881, p. 392. 



Original desertion : " T. vix rimata, abbreviato-fusiformis, 

 crassa, solida, subtilissime striatula, castanea ; spira ventrosa, apice 

 obtusissima; anfr. 6, primi 3 planiusculi, penultimus convexus, 

 ultimus angustior, basi rotundatus ; apertura verticalis, oblique 

 semiovalis ; lamellae validae, approximatae ; plica lunata imperfecta 

 vel obsoleta, palatalis 1 longa, suturae parallela, columellaris im- 

 mersa ; perist. crassura, continuum, superne subadnatum, 

 marginibus late expansis, columellari perobliquo, externo 

 strictiusculo. 



" Long. 21, diam. 7| mill. ; ap. oblique 7 mm. longa, 5 lata." 

 (Pfeiffer.) 



Hab. Burma : Mergui (Philippi) ; Farm Caves, Moulmain 

 (Stoliczka, Theobald, Hungerford, Fea)\ Attaran Valley and 

 Tenasserim (Theobald). Mergui Archipelago : Sullivan Island 

 (Anderson fide Tapparone Canefri). 



Clausilia philippiana forms a connecting link between C. bulbus 

 and C. ovata, differing from the latter in the length being greater 

 in proportion to the diameter, in the upper part of the spire being 

 more slender, and in the wider aperture, while it is decidedly less 

 ventricose about the middle than the former. The palatal plicae 

 vary from seven to nine in number, the first being very long, the 

 second about half the length of the first, and the remainder very 

 short ; they are all nearly parallel. 



