DESCRIPTIONS OF GENERA AND SPECIES 479 



moreover, the distal extremity is covered by numerous minute spines, a state of 

 affairs rarely met with among the Cryptodrilidae ; the only other instance, in fact, is 

 Pontodrilus arenae. 



It is possible that this genus is also to be distinguished by the presence of 

 only a single pair of testes ; at any rate, I could only discover one pair of funnels ; 

 there are, however, two pairs of sperm-sacs in x and xi ; as the sperm-sacs generally 

 correspond in number to the testes, the missing testes of the tenth segment may be 

 ultimately forthcoming. 



The spermiducal glands open on to the eighteenth segment; the penial setae are 

 remarkable in being of two kinds (a not uncommon occurrence, however) ; there 

 are setae with an ornamentation like that of the ordinary setae of the body ; there 

 are also setae of which the distal extremity has transverse ridges. 



Deodrilus jacksoni, BEDDAED. 

 D. Jacksoni, BEDDAKD. Q. J. M. S., vol. xxxi, 1891, p. 475. 



Definition. Length, 345 mm. Genital papillae forming a dumb-bell-shaped area between 

 segments XI/X1I. Two pairs of gpermat/tecae without diverticula in Fill, IX. Had. 

 Ceylon. 



The anterior segments of the body are annulated ; the clitellum was not fully 

 developed in the specimen which I examined ; it appeared to extend from the fifteenth 

 to the eighteenth segment. The genital orifices (upon the eighteenth segment) were 

 borne upon two ridges coinciding in position with the ventral setae. The septa lying 

 between segments vi/xiii are specially thickened. There is a gizzard in vi ; the 

 calciferous glands, which are bilobed. lie in segments xv, xvi, xvii; the intestine 

 begins at about the twentieth segment. There appeared to be a ' mucous gland ' lying 

 beside the pharynx. I have illustrated the anatomy of this species in my paper 

 quoted above. 



Genus MILLSONIA, BEDDARD. 



DEFINITION. Large worms, with strictly paired, ventrally placed setae. Male 

 pores (paired or unpaired) on XVII. Nephridia diffuse. Two gizzards in 

 V, VI. Calciferous glands in XV-XVII. Intestine with about thirty pairs of 

 caeca. Spermathecae without diverticula Spermiducal glands tubular. No 

 penial setae. 



