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, 'jomm.; diameter, Jmm.; number of segments, 220. Setae ornamented, 



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



VII-XI. Hah. — Antioquia. 



The prostomiunj 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. 217. 



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

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

 dorsal. Clitellum, XVI-XXIV. Three pairs of calciferous glands. Three pairs of 

 spermathecae in VII— IX. Sab. — Caracas. 



This species difiers 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. ; numler of segments, 100. Setae absent from first two segments ; 

 no modified setae upon clitellum. Clitellum, XIV-XXF. Seven pairs of calciferous glands. 

 Four pairs of spermathecae in F-VIIL Hah. — Cayamhe, Ecuador ; 14,000 feet. 



4 N 



