1891.] EARTHWORM FROM WEST AFRICA. 173 



shown that the Earthworm fauna of tropical Africa is very dis- 

 tinctive of that region. A large number of the species that have 

 been described belong to a series of remarkable new genera of the 

 family Eudrilidse ; and these have been found both upon the East and 

 the West coasts, though at present the species and the genera are 

 confined to one side of the continent or the other. Besides the 

 Eudrilidse, representatives of the genus Acanthodrilus have been met 

 with and a few other forms. 



The following is a complete list of Central and South-African 

 Earthworms, excluding only representatives of the genera Lumhricus 

 and Allolobopliora, which are probably not indigenous except in the 

 North ; those that are queried require further identification. 



(1) Eudrilus^MZ/zen?, Horst. Liberia \ 



(2) Teleudrilus ragazzii, Rosa. Scioa. 



(3) Nemertodrilus griseus, Michaelsen. Quilimane. 



(4) Libyodrilus violaceus, nov. gen. et n. sp. Lagos. 



(5) Polytoreutus cceruleus, Mich. Mainland opposite Zan- 



zibar. 



(6) Stuhltnannia variabilis, Mich. Mainland opposite Zan- 



zibar. 



(7) Preussia siphonocheeta, Mich. Barombi, Cameroons. 



(8) Paradrilus rosce, ]Mich. Barombi, Cameroons. 



(9) Eudriloides gypsatus, Mich. Zanzibar. 



(10) Eudriloides parvus, Mich. Quilimane. 



(11) H y periodrilus africanus, m\h\. Lagos. 



(12) Heliodrilus lagosensis, niihi. Lagos. 



(13) Pygmceodrilus quilimanensis, Mich. Quilimane. 



(14) Acanthodrilns capensis, mihi. Cape. 



(15) Acanthodrilus {Benhamia) stuhhnanni, Mich. Quilimane. 



(16) Acanthodrilus {Benhamia) schlegelii, Horst. Liberia. 



(17) Acanthodrilus (Benhamia) bUttikoferi, Horst. Liberia. 



(18) Acanthodrilus {Benhamia) beddardi, Horst. Liberia. 



' This species has been recently described by Dr. Horst (" Sur quelques 

 Lombriciens Exotiques appartenant au Genre Eudrihes," Mem. Soc. Zool. France, 

 t. iii. p. 223) from Liberia, and has been described by Dr. Michaelsen as occurring 

 in Barombi. From Horst's description it is difficult to separate the species 

 from those which have now been recorded from New Caledonia, Martinique, 

 Rio Janeiro, Bahamas, British Guiana, New Zealand ; I can add St. Helena as 

 a new locality. Prof. Loven has kindly exchanged with me specimens of some 

 of the Earthworms described five-and-twenty years ago by Kinberg ; among 

 them was a specimen of Kinher g's '■ Liimbricnts eugenic." His definition of 

 that species was as follows : — " Lobus cephalicus terminalis, superus reticulatus, 

 partem mediam tertiam latitudinis, partem dimidiam longitudinis, segment! 

 buccalis occupans ; segmentum buccale lateribus et primum corporis longitudine 

 asquali ; cingulum e segmentis 13-17 1. 12-14 conjectum ; tuberoula ventralia 

 duo, inter segmenta 16-17 1. 15-16; segmenta ISO; longitudo 180 mm." It is 

 clear from the position of the clitellum that this species could not be a Lum- 

 bricus. Having dissected it, I find that it is a Eudrilus, though I have not 

 been able to find any characters which distinguish it as a species. This genus 

 even now requires revision ; it occurs in so many and such widely separated 

 localities that the forms must probably differ specifically. 



