126 LAND AND FRESHWATER 



very large, in one mass, bilobed, and spreading over the expanded 

 stomach. 



The generative organs are very similar to those of Nilgiria solata ; 

 the diverticulum of the penis (figs. 6, 7), to which the retractor 

 muscle is attached, is short, and a distinct muscle is attached to 

 the flagellum near the junction of the vas deferens. 



The dental formula is : — 



58 . 1 . 25 . 1 . 25 . 1 . 5S 

 84 . 1 . 84 



The central tooth and the median teeth have large cusps on both 

 sides ; in this radula (fig. 8) the 2nd median on the right side is 

 abnormally broad, and this variation runs through (as is always 

 the case) every row of the radula. At the 20th tooth (fig. 8 a) the 

 cusps become very small, at the 23rd the inner disappears, at the 

 2oth there is only a trace of the outer ; the laterals (fig. 8 h) are 

 aculeate, the marginal (fig. 8 c) are short and bicuspid, to straight- 

 sided and blunt. The jaw (fig. 9) has a flat convexity on the 

 cutting-edge. 



NiLGIKIA CEYLANICA, Pfr. 



Nilgiria cei/lanica, Pfr. Zeits. Malak. 1850, p. 67 ; Chemn. ed. ii. 

 Helix, no. 795, t. 127. figs. 6, 7. 



Heli.v bisirialis, var. /3, Pfr. Mon. Hel. vol. i. p. 71. — " Testa 

 solidiore, supenie distinctitis decussata" 



Helix ceylanica, Pfr. Mon. Hel. vol. iii. p. 71 ; Heeve, Conch. 

 Icon. ccii. figs. 1420 a, b ; Hanley, Conch. Ind. p. 14, pi. xxix. fig. 3 

 (good figure). 



Hemiplecta (sec. B) eei/lanica, Theob. Supp. Cat. p. 22 = bistrialis, 

 Beck, and taprobanensis, Dohrn. 



Nanina (Xesfa?) ceijlanica, Nevill, Hand-list, p. 51. 



Hemiplecta cei/lanica, Albers, Die Heliceen, p. 53 (1860), separates 

 it from bistrialis ; Collett, Journ. R. Asiat. Soc. Ceylon Branch, 

 vol. XV. (1897) ; Clessin, Nomen. Helic. p. 49. 



Nanina (sec. Xestina) ceylaniea, Trj'on, Man. Conch, p. 84. 



Collett in list of the Terrestrial Mollusca of Ambagamuwa says : 

 " This species is abundant in Lower Ambagamuwa, but it is not 

 found in the upper part of the district. 



" Habitat among the fallen leaves in damp shady localities, 2000 ft." 



Original description : — " T.2:>erforata. sidxjloboso-depressa^solidMla, 

 superne distincte granidato-decussata, diaj^hana^ parum nitida,2}allide 

 rubello-cornea ; spira brcviter convexo-conoidea ; anfr. 4| parum 

 convexi, sensim accrescentes, idtimus tnedio fascia albida, uirinque 

 linea rufa marginata (siipera interdum deficiente) cinctus ; apertura 

 mediocris, obliqua, rotiuidato-lunaris ; perist. simplex, rectwm, 

 obiusum, margine columellari subincrassato, superne leviter reflexo. 



" Diam. maj. 26, min. 21, alt. 13. mill. 



"Var. /3. Major, uyiicolor fulvo-lutea. 



"Diam. maj. 32|, min. 28, alt. 17 mill. 



" Var. y. Fascia mediana alba dejiciente, unica castanea magis 



