1 64 EISEN. [Vol. II. 



B. Spermathecae, three pairs. 



Sp. 7. Penial setae straight, about one-half longer than ordinary setae. 



D. coiiniiiDiis Garman. 

 Sp. 8. Penial setae sigmoid, several times longer than ordinary setae, 

 a. Penial setae not ornamented. D. singnlaris Ude. 



/3. Penial setae ornamented. D. siiigidaris, subsp. n. caroliniajia. 



DiPLOCARDIA KeYESI (EiSEN). 



Definition. — Colo?', flesh, marbled violet, no pigment. Size, 

 70 mm. by 5 mm. Somites, 150. Prostomiimi divides somite i 

 about one-half. Dorsal pores, the most anterior one in i viii/ix. 

 Sper7}iidiical pores in xxi. Spermathecal pores, two pairs, in viii 

 and ix, in front of setae ab. Prostate pores in xx, xxii. Ovidiical 

 pores in front of setae a. Setae all ventral ; a-b slightly larger 

 than c-ei ; a-a larger than b-e. No sculpture. Peiiial setae 

 none. SpermatJiecal setae not differentiated. Clitellum ring-like 

 anteriorly, posteriorly saddle-shaped. Genital aone not distinct, 

 two parallel grooves in }i xx-% xxii ; groove almost straight, 

 with a knob at each apex ; concavity turned ventrally. Septa, 

 thickened are : 



vi/vii, vii/viii, viii/ix, ix/x, x/xi. 



OesopJiagns without calcic concretions. Giasards v, vi. Sac- 

 culated intestine xv. Dorsal vessel single, not covered with 

 chloragogen cells. Hearts in x, xi, xii, with large pulsating 

 divisions ; no chloragogen cells. Nephridia, meganephridia, no 

 coelomic mantle. Testes x, xi. Sperm funnels x, xi. Sperm 

 ducts, which join at xii/xiii in a common muscular sheath ; fuse 

 in xx/xxi. Sperm sacs, one pair pre-septal in ix, one pair post- 

 septal in xii. Spei'ni masses in x, xi. Oviducts in xiv. Prostates 

 confined to one somite each, small, tubular, thicker at apex. 

 Spermatliccae, two pairs in viii, ix; distal end knob-like; the duct 

 is very slender and long, with a very minute wart-like and ear- 

 shaped diverticle, about the middle of the duct. 

 Habitat. — Ensenada de Todos Santos, Baja California, Mexico. 



DiPLOCARDIA VERRUCOSA UdE. 



Definition. — Color, pink. 5z^r, 65 to 75 mm. by 2^ to 

 3 mm. Somites lOO to 12$, body round, of even thickness. 



