DESCRIPTIONS OF GENERA AND SPECIES 641 



of this revision of the segmentation of R. gulielmi since I have not had the oppor- 

 tunity of again fixing the position of the ovaries, &c., in the light of the proposed 

 alteration. 



(4) Rhinodrilus distinctus (UDE). 

 Anteus distinctus, UDE, Z. wiss. Zool., 1893, p. 58. 



Definition. Length, 70 mm.; diameter, J mm. ; number of segments, 220. Setae ornamented, 

 the ventral pair of XXII long. Clitellum, XV-XXIH. Five pairs of spermathecae in 

 VII XL Hal). Antioquia. 



The prostomium of this species appears to show the distinctive characters of 

 Rhinodrilus. There is a gizzard in vi, and the last pair of hearts are in xi. The 

 tubercula pubertatis form a continuous ridge on segments xviii-xxii. UDE figures 

 the clitellum, prostomium, setae, and a spermatheca. 



(5) Rhinodrilus brunneus (MICHAELSEN). 

 Anteus brunneus, MICHAELSEN, Arch. f. Nat., 1892, p. 317. 



Definition. Length, 125 mm.; breadth, 8 mm.; number of segments, 103. Setae not 

 ornamented except on clitellum ; on clitellum ventral setae more strongly riilgnd than 

 dorsal. Cliiellum, XVI-XXIF. Three pairs of calciferous glands. Three pairs of 

 spermathecae in TII-IX. Had. Caracas. 



This species differs from R. paradoxa, which it resembles in having three pairs 

 of calciferous glands, in the absence of ornamentation upon the ordinary setae of the 

 body. The nephridia commence in the third segment. There is a gizzard in 

 segment ix. 



MICHAELSEN states that the prostomium is prolonged into a proboscis, which is 

 sometimes extended and at other times retracted ; this leads me to infer that it 

 possesses a prostomium like that of R. gulielmi. For this reason, and also because 

 it has spermathecae, I refer the species to the genus Rhinodrilus, and remove it 

 from Anteus. 



(6) Rhinodrilus ecuadoriensis, BENHAM. 



R. ecuadoriensis, BENHAM, Ann. and Mag. Nat. Hist., March, 1893, p. 23. 



Definition. Length, 75 mm. ; number of segments, too. Setae absent from frst tico segments; 

 no modified setae upon clitellum. Clitellum, XI7-XXV. Seven pairs of calciferous glands. 

 Four pairs of spermathecae in V-T11I. Hob. Cayamle, Ecuador; 14,000 feet. 



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