1920.] j. Stpiphensox : OMgoeJiaeta from India and E. Persia. 257 



The copulatory setae of the spermathecal region are in their ornamentation 

 exactly similar to those of E. prashadi, and no separate figure is needed. In length 

 they measured from 73 to -87 mm., in thickness 25/x at the middle; and the extent of 

 the shaft occupied by the sculpt urings is about one-third of its length. It is note- 

 worthy that whereas in most cases it is the ventral setae of segments viii and ix 

 which are modified, here the lateral setae, included in the lateral papillae on these 

 segments, may also develop as "copulatory setae." 



Genus Dichogaster. 

 Dichogaster bolaui (Mchlsn.). 



Bombay. June 1915. N. B. Kirmear. Several specimens. 



Bassein Road, N. of Bombay. W. India. 7-vii-1917. B. Prashad. Four specimens. 

 Baroda, W. India. 9-vii-1917. B. Prashad. Two specimens. - 



Bayana, 20 miles S.W. of Bharatpnr, E. Rajputana. 15 vii-1917. B. Prashad. A single 

 specimen. 



var. malabaricus, var. no v. 



Bombay; under a tree near the Fort. 30-vi-1917. B. Prashad. A single specimen. 



External Characters: — -Length 31 mm.; diameter 2*25 mm. Colour buff, unpig- 

 mented except for a dark mid-dorsal stripe. Segments 86. 



Prostomium prolobous. 



A conspicuous dorsal pore is seen in furrow 5/6, and then no more till 11/12, 

 where there is a rudimentary one. The pores are well marked from 12/13 onwards. 



In the middle of the body the setal relations are as follows : — ab = \aa =■ \bc 

 =cd; and they are about the same in the region behind the clitellum ; in front of the 

 clitellum all the pairs are closer together, more distinctly ventral, and dd, which be- 

 hind is about y of the circumference, consequently increases. 



The clitellum extends over xiii-xx (==8); dorsally it almost covers xxi in addi- 

 tion. It is ring-shaped over xiii, a little thinner ventrally in xiv, xv, and xvi and 

 thenceforward interrupted ventrally. The region is swollen, and well defined at 

 each end. 



The seminal grooves run in the interval ab ; they are straight, and bordered by 

 whitish thickened lips ; the inner lips of the grooves are almost contiguous in the 

 middle line. 



The spermathecal apertures were not visible. The ventral surface of segment 

 viii, and perhaps of ix, appears slightly thickened, and the setae rather displaced and 

 irregularly set. 



Internal Anatomy : — Septum 4/5 is slightly strengthened ; if 5/6 and 6/7 are pre- 

 sent, they are not discernible in this specimen (which is not in very good preservation) ; 

 7/8 is thin, 8/9 and 9/10 perhaps slightly thickened, the rest thin. 



The gizzards are in segments vii and viii, and the alimentary tube is scarcely 

 constricted between them. The calciferous glands are kidney-shaped, with the hilus 

 turned inwards, and occupy segments xv, xvi, and xvii. The intestine begins in xviii. 



The last heart is in xii. 



