124 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



Ocnerodrilus (Enicmodrilus) limicola Eisen. 



Ocnerodrilus limicola Eisen, Proc. Cal. Acad. Sci., 2d Ser., Vol. Ill, 1893, 

 P- 254. 



SetcB. — As Beddard has expressed doubt as to the exist- 

 ence of setge ab in somite XVII, I have re-examined the 

 type and find these setge to be really absent. 



Ocnerodrilus (Enicmodrilus) mexicanus, sp. nov. 



Plate XIV, Fig. 159. 



Definition. — Length 45 mm., width i mm. No specialized genital zone. 

 The prostates and sperm-ducts open on a pair of small papillae in XVII, 

 in line with setae ab. Setae ab in XVII are absent. Setae strictly paired and 

 smooth. Clitellum complete. Spermathecae, one pair in IX, small, with 

 warty and wavey apex and without diverticle. Sperm-sacs in XII, large and 

 racemose. Sperm-tanks in X and XI. No racemose sperm-sacs in IX. 

 Testes in X and XI. One pair of prostates in XVII confined to one somite; 

 they are small and slender, the glandular part hardly thicker than the muscular 

 part. The sperm-ducts open in the same pore as the prostates. The sperm- 

 ducts are slender and not enlarged at the vicinity of the pores. Septal glands 

 in V to VIII; the glands in VI are the largest; those in VIII the smallest. 

 Sacculated intestine commences in XII. The diverticles of the intestine are 

 long, extending through the whole somite. The nephridia are all furnished 

 with a coelomic mantle; they are larger from somite XIII posteriorly. The 

 coelomic mantle consists of two large flat folds overlapping each other in such 

 a way as to appear as one single square mantle occupying the whole width of 

 the somite. 



Habitat. — Mazatlan, Mexico, in garden soil. 



This species belongs to the group in which the lower part 

 of the sperm-ducts is not enlarged. It differs from O. 

 Hendriei in having the septal gland in VI by far the largest, 

 and in the absence of racemose sperm-sacs in IX. It differs 

 from O. limicola in having a larger gland in VIII and only 

 one pair of prostates. 



Ocnerodrilus (Enicmodrilus) mexicanus Eisen, 

 hawaiiensis, var. nov. 



Plate XIV, Figs. 170, 171. 



Definition. — Characters similar to those of the species except in the follow- 

 ing: The sperm-sacs in XII are very large, filling the whole coelom, but they 

 are only very slightly racemose. The spermathecae are very large; they 



