762 Records of the Indian Museum. [Vol. XXII, 



Perionyx mysorensis, sp. nov. 

 (PI. XXYIII, fig. 10). 



1^'oresls of Shenioya and Kadur Dists., Mysore, S. India. May, 1920. 

 A. Subba Rail. A single specimen, incomplete behind, not fully mature, in 

 poor condition. 



I at first decided against describing the present species ; but 

 the various parts of the sexual apj^aratus are present (except the 

 clitellum) though small, and the penial setae, in conjunction with 

 the other characters, will allow of the species being recognized 

 when it is met with again. 



External Characters. — Length 38 mm. (incomplete posteriorly). 

 Diameter 2 mm. Segments present 90. Colour light brownish 

 purple dorsally, pale ventrally. 



Prostomium rather broad, prolobous or slightly epilobous. 



Dorsal pores present. 



Setae in rings, closed dorsally and ventrally. In segment xix 

 they were about 54 in number, in the middle of the body about 62. 



The clitellum was not distinguishable. 



The male pores, in segment xviii, are situated close to the 

 middle line, each in a small depression, the depressions themselves 

 lying on a transverse ridge across the middle of the segment. 

 This ridge is not elevated above the general surface, and comes 

 into existence through the presence of two depressions, which have 

 the fotra of short transverse trenches and occupy the anterior and 

 posterior fourths of segment xviii, in front of and behind the pores ; 

 the trenches are continuous with the intersegmental fissures (17/18 

 and 18/19), and in transverse extent are about equal to the antero- 

 posterior length of the segment. 



The female apertures were not seen. 



The spermathecal pores are small, in grooves 7/8 and 8/9, 

 near the middle line. 



Internal Anatomy. — Septa 6/7-9/10 are somewhat thickened, 

 and also 12/ 13- 15/ 16. 



The gizzard,— hardly to be called a gizzard, — is quite vesti- 

 gial, in segment vi. There are lateral swellings of the oesophagus 

 in xiii, and to some degree in xiv, iDUt they cannot be called calci- 

 ferous glands. 



The last heart is in segment xii. 



Testes and funnels are free in segments x and xi. vSeminal 

 vesicles occupy segments xi and xii; they are moderately large, 

 but do not meet dorsally in the middle line. 



The prostates are small, and confined to segment xviii ; each is 

 a squarish mass, cut into deep lobes. The duct is short, straight, 

 moderately stout relatively to the size of the gland, of the same 

 diameter throughout, and passes transversely inwards. 



Ovaries and funnels are present in segment xiii. 



The spermathecae are two pairs, small and perhaps not fully 

 developed ; they are spherical, sessile on the body-wall, to which 



