yi6 Records of the Indian Miiscuin. [Vol. XXII^ 



tion goes, is not constant in occurrence, as mentioned above. So- 

 mites i, ii, iii, iv, xxvi and xxvii are, it seems to me, uniannulate ; 

 V and XXV biannulate; vii and xxiv trianuulate ; viii quadriannu- 

 late ; tiie fifteen somites ix-xxiii are complete with five rings. Oc- 

 casionally somite iv is composed of two rings owing to the presence 

 of a narrow interpolated ring. 



There are five pairs of eyes, of which the first four pairs are 

 usually arranged in a semicircle in rings 2, 3, 4 and 5, and the fifth 

 pair lie two rings behind the fourth, that is in ring 8. 



On both sides, dorsal and ventral, are found six segmented 

 papillae which generally fall on the middle ring of each typical 

 somite. 



The male and female genital orifices are separated by five rings, 

 lying between the last two rings of somites xi and xii respect- 

 ively. 



The nephridial pores, numbering in all seventeen pairs, open 

 lateralh' in the furrow separating the second and third rings of the 

 middle seventeen somites. 



The anus opens dorsally just behind the last ring of the bodj^ 



The clitellum extends over four somites, x-xiii. 



Tnis species is generally of a yellowish colour variegated with 

 brown, but exhibits great variability in markings. So far as my 

 observations are concerned, there are distinguishable four A'arieties, 

 \\hich occur associated together, but with some intergrading forms. 



(i) In a few specimens from the East Himalayas and Bengal the 

 dorsal surface is divided into three longitudinal areas, a median 

 and two lateral. The median area is lighter in colour, and slightly 

 narrower than the lateral areas which present a dark brown colour, 

 getting lighter towards the lateral margins of the body. The 

 median area is traversed longitudinally by a thick dark brown 

 median stripe, which extends with the lateral bands throughout 

 the whole length of the body, but in some cases it vanishes, or 

 nearly so, on the dark head end. 



(ii) Some examples obtained from several localities of the Assam, 

 Bengal and Bihar Districts, as well as of I,ower Burma, are gener- 

 ally marked on the dorsal surface with three fine dark brown stripes, 

 one median, and on each side one lateral, in position corresponding 

 to the boundary line between the median and lateral areas men- 

 tioned above. On some occasions the median stripe is faint or 

 sometimes obsolete. 



(iii) In examples from several places in the East Himalayas 

 and Cochin State the markings agree in their plan with the forms 

 mentioned above, but may be distinguished from these by the 

 different aspect of the lateral bands which are very faint or some- 

 times obsolete. 



(iv) In some forms from the East Himalayas, North Kanara, 

 Madras and Cochin vState the body is marked on both sides, dorsal 

 and ventral, with dark brown blotches, which occasionally join to- 

 gether in the positions corresponding to the dorsal and lateral 

 areas. 



