652 OLIGOCHAETA 



each other behind, instead of widely, as in A. heterostichon. This separation of the 

 setae posteriorly is a mark of affinity with Geoscolex, to which genus, however, Anteus 

 shows no other strong affinities. 



(i) Anteus gigas, Peeeiee. 



A. gigas, Peeeiee, Nouv. Arch. Mus., 1873, p. 50. 



Definition. Length, i m. 60 cm. Setae strictly paired throughout the lady, not orna- 

 mented (?). Clitellum, XIII-XXIX (?). Sios specially thickened septa follow the gizzard. 

 Nephridia change in structure in segment XX. Hah. — Cayenne. 



(3) Anteus horsti, Beddaed. 



A. gigas, HoEST, Notes Leyd. Mus., xiii, 1891, p. 77. 



A. Horsti, Beddaed, Ann. and Mag. Nat. Hist., Feb. 1893, p. 117. 



Definition. Length, 86 cm. Colour {in spirit') bluish green, darker dor sally ; clitellum 

 brownish. Setae paired, becoming slightly separated from each other posteriorly, orna- 

 mented ; clitellar setae longer, but with a similar though more marked ornamentation of 

 ridges. Clitellum, XIF-XXXIL Gizzard followed by six strong septa ; calciferous 

 glands, three pairs. Hab. — Brazil. 



(3) Anteus heterostichon (Sohmaeda). 



Hypogaeon heterostichon, Schmaeda, Neue wirbell. Thiere, I, ii, 1861, p. 14. 

 A. heterostichon, Beddaed, Ann. and Mag. Nat. Hist., Feb. 1893, p. 117. 



Definition. Length, 250 mm.; diameter, 13 mm. Colour (in spirit) yellowish white 



anteriorly, bluish posteriorly. Setae ornamented, those on clitellum with a more marked 



ornamentation and longer, paired anteriorly in eight series posteriorly. Nephridiopores 



in front of outermost setae of dorsal couple. Clitellum, XV-XXIII. Gizzard present 



in VL ; calciferous glands in XII, XIII. Septa dividing segments VI/X thickened. 



Nephridia from segment XIII differ from anterior series in having a short caecum. 



Ilab. — Ecuador and the Cordilleras. 



This species was originally described by Schmaeda ; the type-specimens have 



been lately examined by myself. There is no doubt that it belongs to the genus 



Anteus, though from Schmaeda's diagnosis it might have been supposed to be 



referable to Geoscolex. That diagnosis runs as follows : — 



'Series setarum in dorso octo, binae in antice parte convergentes, in postice 

 divergentes.' 



