NEW GENERA AND SPECIES OF EARTHWORMS. 271 



Genus Siphonogaster, Lev. 

 Siphonogaster, Levinsen. ' Vidensk. Med. fra den naturh. 

 Foren. i Kjoebenhavn/ 1889, p. 319. 

 Moderate-sized Oligochseta belonging to the family Geo- 

 scolicidae; setae eight in a segment, ornamented/ paired; on 

 the 18th segment a pair of penial processes, upon the middle 

 of which open the sperm-ducts, armed with modified setse and 

 furnished with suckers; sperm-ducts running within the thick- 

 ness of the body-wall ; spermatothecse absent ; oesophagus 

 without gizzard or calciferous glands. 



Siphonogaster Millsoni, F. E. B. 

 Siphonogaster Millsoni, F. E. Beddard. ' Proc. Zool. 

 Soc.,' 1891, p. 48. 

 Body square in transverse section behind the penial pro- 

 cesses, the paired setse lying at the corners ; the dorsal region 

 of the body-wall much thinner than elsewhere ; penial setae 

 arranged in pairs, though not with absolute regularity. 

 Hab. : Lagos, West Africa. 



5. Alvania Millsoni, nov. gen., n. sp. 

 Among a number of earthworms recently sent to me from 

 Lagos by Mr. Alvan Millson, Assistant Colonial Secretary, are 

 three or four examples of a small worm belonging to the 

 family Eudrilidae. So many new genera have been lately de- 

 scribed of this characteristically African family, and so many 

 of them are imperfectly known, that I hesitate before placing 

 the species to be described here in a new genus ; and yet it 

 appears, as will be seen in the sequel, to possess characters 

 which, as the genera are now limited, entitle it to generic 

 rank. In any case I include it for the present in a new genus 

 allied to Heliodrilus, which it approaches more closely than 



1 This is of course another reason for referring the genus to the 

 Geoscolicidse. 



