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



distinct one on XIII. Spermiducal pores on XIX in line with setae a. Sperm- 

 athecal pores on VIII and IX, posterior to setas a, in line with a-b. Prostate 

 pores on XVIII and XX, in line with setae b. Oviducal pores near median 

 line, surrounded by a zone. Setae, sigmoid, with numerous fine bars; a~a 

 about one-twelfth, d-d, five-ninths the whole periphery; b-c is shorter than 

 a-a\ ab shorter than c-d; a-b, half as long as b-c; ab, slightly shorter than 

 c-d. Setae b in XIX is present, a is absent or present. Penial setae rudiment- 

 ary or very small, in the body- wall of XVIII and XX. Spermathecal setae 

 differentiated and ornamented in VIII and IX. Clitellum ring-shaped in 

 XIII-XVII, saddle-shaped in XVIII. Genital zone, a quadrangular, glandu- 

 lar, ventral zone in XVIII-XX, in the corners of which lie the prostate pores. 

 The two grooves are curved ventrally. No depressed area and no papillae. 

 Gizzards in V and VI. Sacculated intestine commences in XVIII; a dorsal 

 typhlosole. Dorsal vessel alternatingly double and single in VI-XV. Hearts, 

 four pairs in X-XIII. Nephridia, meganephridia, commence in II. Testes 

 in X and XI. Sperm-funnels in X and XIX. Sperm-ducts join, but do not 

 fuse until at the male pore in XIX. Sperm-sacs, one pair preseptal in IX, 

 one pair postseptal in XII. Oviducts large. Spermathecae, two pairs in 

 VIII and IX. A large sac-like part and a thinner, irregularly bent, muscular 

 duct; a small, stalk-like diverticle with a knob-like apex. 

 Septal formula:— 



VI/VII, VII/VIII, VIII-IX, IX/X, X/XI, XI/XII, XII/XIII, XIII/XIV, 

 XIV/XV, XV/XVI. 



Habitat, — Orange County, Florida. Specimens received 

 from Professor Frank Smith. 



Detailed Description. 



Body. — The somites of this species are much more dis- 

 tinctly set than those of any of the other species. The 

 grooves are deep, the equato rials of the somites standing 

 out boldly. None of the specimens possess a depressed 

 genital zone. The copulatory grooves connecting the 

 prostates and male pore are, on the contrary, situated on 

 two elevated ridges, the whole zone being raised above the 

 sexual surface of the body and more prominent than the 

 clitellum. 



The prostomium divides somite I about one-half. Somites 

 II to IX increase gradually in width posteriorly. Somites 

 VIII and IX are of about equal width. Somites X, XI, XII 

 are about of the same width as somites VIII and IX. The 

 papillge on which are. situated the spermathecal setse are not 

 very prominent. 



