On the Oenus Notykus [Mich.). 599 



LXIII. — On the Genus Notykus (Mich.), and on a nciv 

 Species of that Genus, liy Fuank E. Beddaku, M.A., 

 D.Sc, F.R.S. 



I RECEivKD lately through the kindness of Mr. Loveridge 

 some species of earthworms collected by him in the Tan- 

 ganyika district of Eastern Tiopical Africa, which were 

 forwarded to me at tlie Natural llistory Museum. 1 have 

 to thank Dr. Baylis for forwarding them on to me at the 

 Zoological Society. Of these worms there were altogether 

 four specimens, of which I lett one entirely out of con- 

 sideration owing to its very softened condition. Of the 

 others one was in a very fair state of preservation for 

 anatomical study, the other two not so good, but still they 

 could be satisfactorily studied. 1 refer to these three speci- 

 mens as A., B, and C. They are thus lettered in the collection 

 of the Natural History Museum, to which I have returned 

 them for reference by others. Specimens A and B were 

 collected on a footpath at Chanzuru, near to Kilossa ; speci- 

 men C at Kilossa. They all seem to belong to one species, 

 in spite of certain apparent external differences, to which 

 I shall refer in the following description. For reasons 

 which will be also apparent in that description, I regard 

 these Eudrilids as a new species of Notykus, which I name 

 Notykus kitossensis. 



The genus Notykus has been described by Michaelsen, and 

 not, as it would appear, examined by any other zoologist 

 subsequently to his two papers *. The characters of the 

 genus and of the single species referable thereto are sunnned 

 up in the same naturalist's comjirehensive work upon the 

 Oliogochceta t- 



It is not, of course, unnoticed by myself X- 



Specimen A is about 90 mm. long, with a diameter of 

 4-5 mm. The second specimen is apparently of much the 

 same size, but has lost liind end, and both, therefore, are 

 quite approximate to Notykus eviini. Michaelsen, however, 

 states that the setie of his species are delicate and not large. 

 This is not the case with my species, of which all specimens 



* " BescbreibuDg- der von Ileim Dr. PV. Stuhlmann auf Sansibar und 

 deni gegeuiiberliegeuden Festlaude gesammellen Teiricoleu," Jli. lluiub. 

 wis;*. Aust. ix., Hamburg, 1891 ; " Acue uud weiiig bekauiite afrikauiscbe 

 Terricolen," Jli. Ilaiub. wiss. Anst. Beiheft '2, xiv., Hamb. 1897. 



t "Uligochjcta," iii 'Das Tierreicb,' Berlin, I'JOO, p. 39(3. 



j ' A Monograjtb of the Order of Uligochaita,' Oxford, 1895, p. 594 

 et passim. 



