Oligochoeta of Travancore. 501 



On tlie clitellum the setse are wanting-. Male pores on 

 the xviii. segment corresponding to the lines of setaa h ; 

 between the male pores the sette are wanting. Each male 

 pore is placed on a whitish tubercle, which is supported by a 

 swollen papilla (PI. XIII. fig. 8). 



There are other paired papillre on intersegmental furrows 

 xvi.-xvii., xix.-xx., xx.-xxi., and xxi.-xxii., crowded in the 

 middle ventral line. The last or the last two pairs of 

 papillae may be wanting ; the pair of intersegmental 

 furrows xvi.-xvii. is more developed and swollen than other 

 pairs (PL XIII. fig. 8). Female pores in the anterior part 

 of the xiv. segment, about in the lines of the setas a, in a 

 transversely extended little area, placed towards the circle of 

 the setae. 



Sperniathecal pores two pairs, hidden in intersegmental 

 furrows vii.-viii. and viii.-ix. in the lines of the setse/. 



Internal anatomy/. — Septa vii.-viii. — xii.-xiii. much 

 thickened. 



A strong gizzard in the vi. segment. The sacculated 

 intestine begins in the xiv. segment. Last hearts in the xiii. 

 segment. 



Micronephridia very small. 



Two pairs of testes and sperm-duct-funnels lie ventrally 

 in the x. and xi. segments. The testes and funnels of a single 

 segment are included in a pair of large and a few lobated cap- 

 sules, which join dorsally to the oesophagus. These capsules 

 are compressed between the strong funnel-like septa ix.-x., 

 x.-xi., and xi.-xii., to which they are united only in the 

 ventral region of the body ; in other regions they are free. 

 It is to be noted that the capsules round the oesophagus are 

 traversed by little muscular bundles, which go from one septum 

 to another, and sometimes are prolonged to the body-wall. 



A pair of white, finger-shaped sperm-sacs depends from 

 septum ix.-x. into the ix. segment ; a second pair of similar 

 sacs depends from septum xi.-xii. into the xii. segment. 

 The sperm-sacs are somewhat smaller than the testicular 

 capsules. 



The prostates consist of a strong, cylindrical, muscular 

 duct; that from the male pore goes laterally, and then back- 

 wards into the xix. segment, to unite with the glandular 

 portion. This portion is well developed and provided with 

 grooves which form lobes at the margins. The glandular 

 portion extends from the xix. to the xxii. segment inclusive 

 (PI. XIII. fig. 9). 



There are two pairs of spermathecae in the viii. and ix. 

 segments. The main pouch consists of a sac-shaped trans- 



