new Earthworms in the British Museum. 285 



and xx., near the intersegmental groove ; further there is a 

 pair of papillae on segment xvii. near the posterior groove 

 and nearly in a line (a little dorsad) with the male pore, and 

 two pairs on somite xviii. behind the male pore and making 

 with it a regular triangle; there are thus 10 papillae, which 

 are all similar and look like small tubercles. 



The first dorsal pore is between segments xii.-xiii. 



None of the septa are noticeably thickened; septa 8-9 and 

 9-10 arc wanting. 



The gizzard is an elongate truncated cone and is placed 

 immediately after septum 7-8 ; from its hind margin a number 

 of muscular bands are given otf which are attached to the 

 body-walls. The two intestinal casca are slightly lobulated. 

 The last heart lies in somite xiii. 



The sperm-sacs, which are tongue-shaped and thick, occupy 

 as usual somites xi. andxii.; each of them is connected with a 

 small sperm-reservoir lying in the front segment at the inner 

 corner of the sperm-sacs. 



The prostates extend over five segments and may be de- 

 scribed as tolerably compact oval bodies, deeply notched 

 as if a posterior inner quadrant had been excised ; in this 

 notch runs obliquely the ejaculatory muscular duct, which is 

 short and fusiform. 



There are two pairs of spermathecaa in somites viii. and 

 ix. ; they end in a heart-shaped sac with a duct half its 

 length, which (at the inner side) is furnished with a diverti- 

 culum ending in a short tubular and a longer sausage-like 

 portion. The whole of the diverticulum is twice as long as 

 the main sac with its duct. The aspect of this spermatheca is 

 much the same as that of the spermatheca of P. musica. Horst. 



Perichceta pura, sp. n. (PI. IX. figs, li-l'db.) 



Hab. Lombok, 1500 feet {A. Everett). 



This species was represented by one fine specimen mea- 

 suring 250x11 millim., with 92 segments; the colour (in 

 spirit) is entirely white. 



The setae are closer together ventrally, and number 51 

 on somite v., 72 on xiii., 96 on xxv. 



The clitellum occupies the three usual segments and bears 

 no setae. 



The male pores, in line with seta 9, are carried on slight 

 swellings without well-marked boundaries ; between the two 

 pores 14 setae are visible. 



The oviducal pore lies on the anterior half of the 11th 

 .segment and is surrounded by a whitish circle. 



