486 



PROCEEDINGS OF THE NATIONAL INIUSEUM 



VOL. 85 



' Gaps present. 



* See on dorsal pores below. 



The first dorsal pore is on 11/12 (5 specimens). On two speci- 

 mens there are porelike markings on 5/6-10/11. When the worms 

 are bent the coelomic fluid oozes to the exterior thronjxh these pores 

 (?), but the openings into the body cavity of the coelomic face of 

 the parietes do not have quite the appearance of normal pores. 



The clitellum is annular, extending from 13/14 to 16/17; dorsal 

 pores and intersegmental furrows lacking; setae probably lacking 

 on most of the specimens, but a few scattered setae present ventrally 

 on xvi of one specimen. 



The spermathecal apertures are minute, widely separated, on tiny 

 tubercles on 6/7-8/9. 



The male ajjertures are minute ; in 5 specimens each pore is at the 

 center of a small transversely oval tubercle. On one specimen each 

 male pore is at the center of a very narrow elongate marking, ex- 

 tending anteroposteriorly nearly to 17/18 and 18/19. On the remain- 

 ing specimens the male pores are on tiny pointed protuberances. 



The genital markings are two pairs, each marking transversely 

 oval, slightly larger than the oval male-pore tubercle, the center 

 of each marking about in line with the male pore, one marking just 

 in front of and another just behind the male-pore tubercle, an 

 anterior or a posterior margin of a marking in contact with the 

 tubercle (4 worms). On another specimen there are six pairs of 

 these markings, one pair postsetal on xvii, another presetal on xviii 

 and in addition an unpaired marking, two pairs postsetal on xviii, 

 another presetal on xix, and one postsetal on xix. On the worm 

 with elongated male-pore areas there is a pair of elongated genital 

 markings, each with bluntly rounded ends, slightly crescentic in ap- 

 pearance with the concave side facing me^sially, reaching anteropos- 

 teriorly to 17/18 and 18/19. On the remaining worms there are on 

 xviii two pairs of genital markings, one presetal and one postsetal. 

 The anterior, elongate-oval markings are just lateral to the male 

 pores and extend anteriorly to 17/18 and posteriorly to just behind 

 the setae. The posterior markings are smaller, almost circular, 

 immediately behind the male pores. 



