On some Parasitic Worms from East Africa. 283 



56. Marmosa parata, TIios. 



$ and 2 young. 11, 12, and 18. Para Zoological Gardens. 



Described in 1911 from a specimen obtained at Igarape- 

 Assu by Mr. A. Robert. 



Specimens nos. 155, from Villa Braga, and 39 and 41, from 

 Ceaia, are also allied, but show certain differences, for whose 

 due appreciation further material is required. 



57. Monodelpltis * brevicaudata, Erxl. 

 c? . Taperinha, near Santarem (Dr. Hagmann). 



58. Monodel}>his emi/ia> } Thos. 

 Per amy s emilice, Thus. 



3 . 161, 162. Villa Braga, R. Tapajoz. 



These two excellent specimens of this rare and beautiful 

 opossum are of interest owing to their again showing the 

 curious vinaceous coloration of the under surface on which 

 some notes were given in the original description (I. c). 

 Both examples are old males and have the coloration covering 

 nearly the whole of the under surface, quite uniformly, and 

 similar in each case. It is, perhaps, possible that this colour, 

 so unlike a normal mammal colour, may be due to a staining 

 by some external cause, say a purple-juiced bark, and the 

 rapid change in the colour after death recorded by Fraulein 

 Snethlage would be in favour of such a view. 



Whether natural or artificial, it probably increases with 

 age, as both these examples are quite old, and have it at a 

 maximum. 



XXXIV. — Notes on some Parasitic Worms from East Africa. 

 By H. A. Baylis, M.A. 



(Published by permission of the Trustees of the British Museum.) 



The five species to be considered formed part of a collection 

 of parasites made by Mr. A. Loveridge during 1917-1919 in 

 British, and what was formerly German, East Africa. 



N E M A T D A. 



1. Asearidia fasciata, sp. n. (Figs. 1-3.) 



Host : Vinago delalandii, subsp. 

 Locality. Dar-es-Salaam. 



* Cf. Ann. & Mag. Nat. Hist. (9) v. p. 195 (footnote). 



19* 



