218 



HELICIDJE. 



in front. Aperture round lunar, oblique, peristome toothless, 

 narrowly expanded, somewhat thickened within, reflexed at base, 

 ends couveririnof. 



" External anatomy and genitalia unknown. Jaw arcuate, with 

 about 6 wide, low, but separated ribs. Radala showing the same 

 characters described for Plectotropis, but tlie outer marginals have 

 the ectocone bifid. 



" Shells of this section differ from Pledotropis in lacking the 

 peripheral keel and in the smoother surface, but there are some 

 intermediate species. It has the same geographic range, extend- 

 ing northwards to Kiusiu Island, Japan. The jaw of the only 

 species examined has fewer ribs than in Plfctotro2ns, but this is not 

 likely to prove a constant difference." {Pilshry.) 



188. JEgista phayrei, Theobald. 



Helix pliayrei, Theobald, J. A. S. B. xxviii, 1859, p. 306; Blanford, 



J. A. 8. B. xxxiv, 1865, p. 90 ; Hanley & Theobald, Conch. Ind. 



1870, pi. 15, tig. 1. 

 Helix {Plectotropis) pJiayrei, Nevill in Anderson, Zool. Res. Two 



Exped. West. Yunnan, i, 1878, p. 879 ; Tryon, Man. Conch, ser. 2, 



iv, 1888, p. 55, pi. 12, fig. 78. 

 Helix ( Camaena) phayrei^ Pfeiffer <& Clessin, Nomencl. Helic. Viv. 



1881, p. 191. 

 Helix (Euhadra) phayrei, Pilsbry, Man. Conch, ser. 2, vi, 1890, 



p. 114, pi. 32, fig. 53. 

 Eulota [ALgista) phayrei, Pilsbry, op. cit. ix, 1895, p. 210. 



Original description : — " Testa lenticulari, infundibuliforme-um- 

 bilicata, obtuse-carinata, lineis transversis flexuosis et confluenti- 

 bus fortiter striata ; anfract. 6, convexiusculis, sutura impressa, 

 apertura obliqua, subquadrata. Perist. tenui, reflexinsculo. 



"Diam. 0-68 [ = 17 mm.], alt. 0-30 [=7-75 mm.]." (Theobald.) 



Hah. Burma : between Ava and Prome, banks of Irrawaddy 

 {Oldham). 



Three specimens, from Ava, in the late Col. Beddome's collec- 

 tion, kindly placed at my disposal by Mr. Leman, its ])re5ent 

 owner, enable me to supplement the somewhat meagre original 

 description. 



Shell depressed conoid, moderately but deeply umbilicated, 

 rather solid, fuscous corneous, coarsely striated and densely 

 covered with elongate papillcc, which coincide more or less with 

 the striae. Spire depressed, suture rather shallow, apex acute. 

 Whorls 5|-6, increasing slowly and regularly, flattened, the last 

 convex below, angidated at the periphery and around the um- 

 bilicus, slightly dilated towards tlie mouth, not perceptibly 

 descending or deflexed in front. Aperture oblique, ovate-circulai', 

 margins slightly approaching, united by a thin callus on the 

 ])arietal wall ; peristome a little thickened and shortly reflexed ; 

 upper, outer, and basal margins regularly curved, columellar 

 margin forming a slight angle with the basal margin, obliquely 



