ENCHYTR^EID^B 8 1 



Spermathecce (pi. xn, fig. 5). The apical ampulla small and 

 tapers toward the intestine ; the entrance to the intestine not at the 

 apex, but nearer the base of the ampulla. 



LUMBRICILLUS MERRIAMI ELONGATUS var. nov. 

 pi. xu, fig. 6 ; test-fig. 49. 



Definition. Brain less emarginated posteriorly, slightly longer and 

 narrower than the species. The ampulla of the spermatheca is about 

 equal to the glandular duct. There is about 

 one more seta in the majority of the fasci- 

 cles than in the species. Testes with about 

 ten lobes. Sperm-funnel shorter and more 

 globular than in the species. 



Locality. Metlakatla, June 4, 1899. 

 Found under seaweed together with the spe- 

 cies. 



LUMBRICILLUS ANNULATUS sp. nov. 



FIG. 49. Lumbricillus mer- 

 Pi. xviii, fig. i ; text-figs. 50-52. riami elongatus , 



Definition. Length about 12 mm., width 



about .75 mm. at clitellum, from which point the body strongly tapers 

 toward each extremity. Somites about 56. Setae : laterals, 5, 5, 6, 

 6, 6, 5, 5, 5, 6, 4, 3, 3, 4, 4, 4, 3, etc. ; ventrals, 6, 6, 8, 8, 8, 7, 9, 

 8, 7, 7 o, 6, 6, 6, 5, 5, 5, etc. Prostomium slightly poted. Except 

 for the first few somites the intersegmental grooves are very deep. 

 Clitellum XI \ XIV. Sexual papillae not large, but still quite prom- 

 inent. Septal glands in IV to VII. Brain with a slight emargination 

 posteriorly ; the lateral retractor muscles are unusually broad at their 

 attachment to the brain. Dorsal vessel rises in from XVI to XIV. In- 

 testine covered with a thin layer of chloragogen cells ; in XII this layer 

 consists of very few and very small cells. Spermathecae with basal 

 collar of glands and with a thick layer of glandular cells extending to 

 the apex of the ampulla ; the latter is hardly differentiated. Sperm- 

 ducts short and narrow. Sperm-funnels about twice as long as broad, 

 and about one-third longer than the penial bulb. The penial bulb con- 

 tains three different kinds of long, narrow cells. Ovaries in XII much 

 lobed. Testes in XI penetrate the septum into X, partly filling that so- 

 mite. Ventral glands of large size in XIV to XIX, small ones not pro- 

 jecting beyond the ganglion and only perceptible in sections, in III to X. 

 Nephridia with antcseptal consisting only of the ncphrostomc ; rounded, 



