40 ZOOLOGICAL RESULTS OF THE RUWENZOEI EXPEDITION. 



which doubtless represents the " Eitrichterblase " and the " Ovarialblase." I am 

 doubtful whether this chamber is also in communication with the spermathecal sac or 

 surrounds it. It is not, however, necessary to settle this point for purposes of the 

 identification of the species, which I believe is sufficiently distinguished from other 

 species of the genus hitherto described. Of these there are ten species known. 



A peculiarity of Eminoscolex nmenzorii is the thickened fold which bounds the 

 male pores posteriorly, and is comparable to a rudimentary penis or pair of penes. Of 



Test-fig. 8. 



Terminal male organs of Eminoscolex navenzorii. 

 B.C. Bursa propiilsoria. p. Spermiducal gland, v.cl. Vas deferens. 



this structure there seem to be the equivalents in a few other species, viz., in 

 jE. sylvestris *, E. harnimi f , E. neumanni t, E. viridescens, and perhaps E. toreutus §. 

 Although the mere thickening which I have figured in E. nmenzorii is difi'erent from 

 the projecting penis of E. viridescens, the immaturity of my specimen might account 

 for the diiference very easily. 



But Eminoscolex nmenzorii is to be distinguished from E. sylvestris and E. harnimi 

 by the fact that the dorsal setae are further apart than in those species, where the 

 distance a-b is three times the distance c-d. It cannot be confused with E. neumanni 

 by reason of the fact that in the latter species the spermathecal pores are opposite to 

 the lateral setae, whereas in E. nmenzorii they are, as in the majority of species, in 

 front of the ventral setse. There remain E. toreutus and E. viridescens. In the latter 

 species ||, however, the spermathecal pores are a segment further back and are placed 



* Miohaelsen, Zool. Jahrb. (Abth. f. fijst.) xviii. p. 486. 



t Id., MT. Hamb. wiss. Anst. xvii. J Id. ibid. xiv. 



§ Id., " Eegenwiirmer," in Deutsch-Ost-Afrika, iv. p. 9. 



II Id., OligoohEeta in ' Das Thierreich," Lief. 10 (Berlin, 1900), p. 407. 



