172 RISEN. 



DlPLOCARDIA SINGULARIS (Ude), Subsp. H. CAROLINIANA. 



Definition. — Color, flesh, without pigmentation. Si.'::e, 40-50 

 mm. by lyi mm. Somites, 64, 98-136. Prostomium divides i 

 about one-half. Dorsal poj'es, most anterior on the front part 

 of ix. Sperviiducal pores xix. SpermatJiecal vii-ix. Pros- 

 tate pores xviii, xx. Ovidncal pores xiv, on a small glandular 

 area. Setae as in the species, but a-b is about twice as long 

 as a-a ; a-b less than one-half as wide as b-c, all faintly sculp- 

 tured. No setae a-b in xix. Denial setae curved, pointed, and 

 ornamented. SpermatJiecal setae not differentiated. Clitellum 

 ring-like, except in anterior part of xviii, where it is saddle- 

 shaped, xm-yi xviii. Genital zone not much differentiated. 

 Two curved grooves, with the convexity turned to the ventral 

 median line. In xvii two large circular areas, like depressed 

 papillae. In xxi two similar areas. In xxii one median oblong 

 area. Septa, thickened are : 



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



Oesophagus without calciferous folds. Gizzards v, vi. Saccu- 

 lated intestine commences in xvii. Dorsal vessel single, with 

 chloragogen cells. Hearts, muscular vessels in x-xii, with chlo- 

 ragogen cells. Megancphridia. Testes xxi. Sperm funnels 

 X, xi, compact. Sperifi sacs, one pair in ix pre-septal, one pair 

 in xii post-septal. Oviducts with very large protruding funnels 

 in xiii. Prostates, large, tubular, almost straight ; one-third as 

 wide as the body cavity. Spermat/iecae, three pairs in vii-ix. 

 The anterior pair the smallest. The two posterior pairs the 

 largest. Each of the latter extends through two somites back- 

 wards. The diverticulum is longitudinally oblong, with a distinct 

 stalk or duct, and divided up in several chambers by trabecula. 

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



Note. — There is some little doubt about the opening of the spermathecae in D. 

 verrucosa. Ude gives the pores as being slightly dorsal to setae d. Later, he 

 says that the oviducal pores are also situated between setae d, while his Fig. 14 

 shows that they are situated between setae (/. Of course it is possible that the 

 misprint concerns only the reference to the oviducal pores. I have seen no 

 specimens of this species. Those received from Prof. Frank Smith from 

 Havana, 111., and labeled " Z>. verrucosa Ude (?) " belong undoubtedly to a new, 

 not yet described, species. 



