igoS.] W. MiCHAEivSEN : Oligochceta of the Indian Empire and Ceylon. 175 



Colour violet-grey dorsally with lighter, yellowish grey intersegmental bands 

 growing broader ventrally. 



Head epilobous (|). First segment dorsally with a sharp median longitudinal 

 furrow. 



First dorsal pore in the intersegmental furrow 4-5. 



Internal Anatomy. — Two pairs of grape-like sperm-sacs depending from 

 septa lo-ii and 11-12 into segments 11 and 12. 



Alimentary tract: A rudimentary gizzard, not thicker than the other parts of 

 the oesophagus, in the 5th segment. Calciferous gland-like swelling in the 13th 

 segment indistinct. 



Prostates with a thin and rather short, quite straight duct. I could not 

 detect penial setae. The setae in the vicinity of the male pores all proved tobe 



ordinary setse of the usual j -shape. I take it for granted that I was mistaken 



when I believed certain pores in the male area to be the hollows left by penial setae 

 which had fallen out {I.e., 1903, p. 9). 



Perionyx excavatus, E. Perr. 



p. Ô., E. PERR., plus P. iniermedius, n. sp., BEDDARD, Proc. Zool. Soc. London, 1892, p. 68g. 

 Hab. — Western Himalayas, Dharmpur in the Simla distr., ca. 5,000'. 



Dr. N. ANNANDAIvE leg., 6— 8-V-07. 

 „ ,, Matiana in the Simla district, 8,000'; 



Dr. N. ANNANDALE leg., 30-vi-07. 

 Simla; A. PARSONS leg., 23-xi-o6. 

 Eastern Himalayas, Phallut in the Darjiling district (British 



Sikkim), 11,800—12,000'; C. J. BERG- 

 THEIL and I. H. BURKILL leg. 

 ,, ,, Kurseong in the Darjiling district, 5,000' ; 



Dr. N. ANNANDAI^Eleg., 21— 29-vi-o6. 

 Bengal, Rajshahi; Major A. R. S. ANDERSON leg. 

 Calcutta; Dr. N. ANN AND ALE leg. 

 ,, Sibpur near Calcutta, Royal Botanical Garden; Dr. KING 



leg., ix-1893 (Mus. Berlin). 

 Ceylon, Kandy; Col. D. C. PHILLOTT leg. 

 Little Andaman Isl. ; F. FINN leg. 



? Western Himalayas, Bhim Tal in the Kumaon district, 4,500'; 

 Dr. N. ANNANDALEleg., i9~28-ix-o6. 



This widely-distributed peregrine species is rather variable in certain points of 

 organisation. Firstly the size is very different in different quite mature specimens. 

 Often all the specimens of a certain locality are nearly equal in size, all very large 

 and robust or all very small ; often the specimens of one locality show a great variety of 

 sizes, from a very small to a rather large one. Another difference is seen in the shape 



