1 68 EISEN. [Vol. II. 



Oesophagus straight or bent, not widening in any somite. Giz- 

 zards vi, vii. A large, thick glandular crop in xiv, xv. Saccu- 

 lated intestine commences in xviii. Dorsal vessel swollen in 

 xvi, xvii. Single (.''). Hearts x, x\. TW/Z/m/m, meganephridia. 

 Testes very large in x, xi. Ovaries are digitate. Sperm fun- 

 nels in X, xi. Sperm sacs, three pairs, in ix, x, xii. Those in 

 ix are pre-septal, those in x and xii are post-septal, in xi only 

 sperm masses. Oviducts in xiv. Prostates occupy somites 

 xvii-xxi, glandular part contains only one layer of cells, mus- 

 cular duct folded, glandular part thick. Spermathecae, duct 

 muscular, long, folded, pouch large in two divisions ; a large, 

 oval, exterior diverticle, pointed forwards. The spermathecae 

 in viii open anterior to setae, those in ix open posterior to 

 setae. 



In this species, as in D. Udei, there are bundles of glands 

 opening jointly in a pair of circular orifices in viii and ix, 

 between the sexual spermathecal setae. These glands are 

 interposed between the layers of the body wall and the epithe- 

 lial cells, and run parallel with the longitudinal axis of the body. 

 Their structure is described more in detail in a memoir soon 

 to be published by the California Academy of Science, San 

 Francisco. 



Habitat. — Raleigh, North Carolina, U. S. A. 



DiPLOCARDiA Udei ;/. sp. 



Definition. — Color, flesh, without any pigment ; an even tint 

 all around the body. Size, 70-90 mm. by 2 mm. at the widest 

 part. Somites, 200-220. Prostomium divides somite i about 

 two-thirds. Dorsal pores, most anterior one on anterior part of 

 xi. Spermiducal pores in xix. Spermathecal pores, two pairs, in 

 front of setae b on anterior part of viii and ix. Prostate pores 

 in xviii, xx. Oviducal pore xiv. Setae : a— a = 3 a—b ; a~a 

 slightly smaller than b-c; b-c = 4 a-b (about); e-d not quite 

 twice as wide as a-b ; d-d greater than half the periphery. In 

 viii, ix, X, a-a = i}i a-b. Penial setae present, ornamented. 

 Spermathecal setae differentiated in viii-x, highly ornamented, 

 accompanied by glands in the body wall. Clitelluni dorsally 



