ON A COLLECTION OF PARASITES, 
FROM THE SOUDAN ; 
BY 
ARTHUR E. SHIPLEY 
Fellow and tutor of Christ’s College, Cambridge 
University Lecturer on the Advanced Morphology ot the Invertebrata 
(PLate VII) 
The following notes refer to an admirably preserved series of 
parasites collected by Mr. R.-M. Hawker in the. Soudan and depo- 
sited last winter by him in the British Museum. l| owe the 
opportunity of examining them to the kindness of Professor 
F. Jefirey Bell. 
The collection contained ten species of Nematode, two of which, 
belonging to the genus Filaria, were not specifically determinable. 
One species was new (Filaria sudanensis von Linstow) and I am 
much indebted to Professor von Linstow Îor the description he 
has prepared of this new species which is incorporated in this 
article and for other help. Of the three species of Cestodes one 
was a large but larval form, undoubtetly belonging to the Bothrio- 
cephalidæ and probably to the sub-family Ligulinæ but beyond this 
it is quite indeterminable, a fact of which [ was finally convinced 
aîter consulting with Professor Zschokke, of Basle, and Professor 
O. Fuhrmann, of Neuchâtel. A Tick and a Gordian Worm have 
both proved new to science, and have been respectively determined 
by Professor Neuman and by Professor L. Camerano. 
NEMATODA 
1. — AscaRISs HELICINA Molin. — Molin, SB. Ak. Wien, XL, 1860, 
p: 337. — Pavesi, Rend. fst. Lombardo, (2), XIV, 1881, p. 282. — 
von Drasche, Verh. Ges. Wien, XXXII, 1883, p. 130. 
A considerable number of specimens taken from the stomach 
of a large Crocodile, Crocodilus niloticus. The animal contained 
about à quart of the parasites. It was captured twenty miles north 
of Fashoda. 
