Earthworms from Celebes. 437 



and ventral gaps ; about 100 chseta?, in front of and 

 behind clitellum ; chsetge smaller laterally. Dorsal 

 pore xii./xiii. Paired caeca in xxvii., with about 12 

 secondary caeca arising from its base. Spermiducal 

 gland horseshoe-shaped, embracing the wide, nearly 

 straight duct ; there is no muscular bulb. 



Hah. Jampea Island, south of Celebes. 



Perichceta bonthamensts, sp. n. (PI. XX. fig. 3.) 



One specimen only is referable to this species. It is about 

 the same size as tiie last, but of quite a different colour. The 

 posterior end is dilated, flattened, and as broad or even 

 broader than the preclitellar region. One very noticeable 

 feature about this end is the large anus, which is hori- 

 zontal ; so far as I can find recorded, this is quite peculiar. 

 It may be suggested that tlie worm muT/ have been com- 

 pressed in packing ; but there is no sign of that, and the 

 outline of the anus is quite smooth and unpuckered, which 

 would probably not be the case if a round anus had been 

 compressed, perhaps irregularly or obliquely. Moreover, the 

 anus is usually vertical in Perichceta. The anus is surrounded 

 by a white, and this by a dark grey circle (fig. 'dd). 



The colour of the worm is scarcely definable ; it appears a 

 good deal changed in spirit ; one can only say that there is a 

 bluish-grey narrow stripe along the back and rather lighter 

 chtetal bands ; the general tone is lighter than in the preceding 

 species. The first two segments, however, are violet. The 

 clitellum is light brown and well marked, occupying the normal 

 position, and is without chgetas. The ventral surface of the 

 worm is buff. 



The worm measures 280 x 17 millim. in front of clitellum; 

 the diameter at the clitellum is 18 millim., and at the posterior 

 end of the body 19 millim. ; in middle of body only V6 millim. 



The worm presents 107 segments. 



Each male yore is a transverse slit or narrow depression on 

 the top of a large round swollen area, lighter than the 

 surrounding body. Each pore-bearing papilla or prominence 

 occupies the whole length of the eighteenth segment, and 

 carries immediately in tront of the pore an oval area, which 

 appears to be the remains of a glandular papilla (fig. 3 a). 



Cjimilar areas lie on segments xvii., xix., xx. in the two 

 former segments there is a median and a pair of lateral 

 papilla3 slightly outside the line of the male pore. In the 

 twentieth the papilla of the left side is wanting. 



