On a vew Nematode from the yoricetjuin Beovpr. 281 



curved. Fla«j;clliim about twice as loug as the scape, the 

 uiutli joiut produced stronj^ly at the outer apical an^le. 

 Head smootli aud shiuing ; the front luinutely punctured at 

 the sides, with a shallow longitudinal sulcus which does uot 

 reach the anterior ocellus ; the scape inserted on a large 

 round pi-ouiincnce ; face subopaciue. Thorax shining, finely 

 and distantly punctured ; j)ronotum crenulate ; notauli 

 smooth, niesopleurie smooth in the middle; a deep trans- 

 verse groove at the base of tlie scutcllum in which are 

 several longitudinal striae. Median segment rugose, with 

 lateral marginal carinse, the apical slope coarsely reticulate. 

 Abdomen smooth and shining, the petiole with delicate 

 longitudinal striae which do not reach the apex. Valvulse 

 very short, considerably shorter than the first tergite ; 

 femora and tibiae long, tarsi rather short. Radius origi- 

 nating a little beyond the middle of the stigma ; the costal 

 margin of the radial cell half as long as the stigma. 



Hah. Ceres, Cape Province, February and March 1921 

 (/?. E. Turner) ; 2 ? ? . 



This is not a typical Streblocera, the scape being smooth 

 and rather diflferently shaped; but I think it may be retained 

 in the genus. 



XXXV. — Travassosius rufus, gen. et sp. n. : a Nematode 

 (Trichostrongylidre) parasitic in the Stomach of the 

 Norwegian Btaver. By M. Khalil, Pii.D. (Loud.), 

 M.D. (Brux.), D.P.H., Hon. Parasitologist to the Zoolo- 

 gical ISociety of London *. 



Material. — Numerous examples of tiiis nematode were 

 found in the stomach of a beaver — ^^ Castor fiber ^^ — from 

 Norway, which died at the Zoological Society's Gardens, 

 London. The animal died on the day following its admission 

 to the menagerie. About two weeks later a second beaver, 

 brought from the same locality, also died. In the latter only 

 a few specimens of the same nematode were tound. In both 

 animals the crocum harboured numerous specimens of Clad- 

 orchis (^Stichorchis) siilttriquetrus. 



Shape of Body. — In the fresh state the parasites were 



* From the Ilelraintbological Department, London Schdol of 'J'ropical 

 Medicine. 



Ann. (f; Mag. N. Hist. Ser. 9. To/, x. li) 



