468 SUMMAKY OF CURRENT RESEARCHES RELATING TO 



for its bursa copulatrix, formed oy a dorsal diverticulum of the distal 

 reo-ion of the cuticular ovijector. The male shows a hemispherical 

 prominence of the cuticle, situated about 60 /x in front of the upper 

 margin of the cloaca. The genus is marked by the absence of lateral 

 alse, the position of the vulva, the vulvar ring, the bursa, the caudal alse 

 of the male, and the replacement of the pre-anal sucker by the pro- 

 minence referred to. As regards the buccal cavity, the ovijector, the 

 male genital papillas, and the position of the caudal pores, it closely 

 resembles AUodajM. There are also interesting resemblances of a less 

 intimate kind between 3Iaupasina and Strongylidffi. 



New Genus of Nematodes from Birds.* — K. J. Skrjabin erects a 

 new genus, Seuratia, for Gnathostomn shipJeyi Stossich, from an albatross, 

 which seems to be the same as Rictularia paradoxa Linstow, from an 

 unknown host, and as Acuaria pelagica Seurat, from Larus canus and 

 Puffinus TcuMi. The diagnosis of the new genus is in the following 

 terms : — Nematodes of the sub-family Acuaringe ; the head-region 

 bears two short bands like curved epaulettes, which are supported on a 

 thickened cuticle and have teeth on their free margin ; behind the bands 

 there is a pair of relatively enormous tricuspid hooks ; the cuticle also 

 bears two double rows of needles with the points turned backwards ; the 

 mouth has two lateral lips ; the buccal cavity is tube-like ; the vulva 

 opens immediately in front of the mid-length of the body ; the uteri are 

 divergent ; there are two unequal spicules, and four pairs of pre-anal 

 papillas ; parasites of the alimentary canal of birds. 



Nematodes from Birds of Prey.t — L. G. Seurat gives a careful 

 description of both sexes of Acuaria Jaticeps (Rud.), from the food-canal 

 of sparrow-hawk and barn-owl, and finds that the species is identical 

 with A. involuta (Linstow). He also describes a new species, A. 

 affinis, from the gullet of a barn-owl {Strixfiammea). In the ornamen- 

 tation of the head, the form of the ovijector, the arrangement of the 

 genital papillae of the male, this new species closely resembles^, laticeps, 

 along with which it lives ; but it differs in its robustness, the greater 

 length of the recurrent branches of the cutaneous lines, the relatively 

 shorter , oesophagus, the position of the vulva about the middle of the 

 body, the shorter tail of the male, and the details of the spicules. Indeed, 

 the nev7 species is like A. noctiise in the form of the ovijector, the male 

 papillse, and the tendency of the recurrent lines to remain independent 

 of one another. 



Filariae from Reptiles.f — L. G. Seurat describes the third stage of 

 theliii'vse: of Filaria jubse nov. nom. { = F. rubella Uud,Spiropterabiifonis 

 Stossich), found encapsuled in the thoracic cavity of Zamenis liippocrepis 

 and Trogonophis loiegmamii. It is marked by the shortness of the 



* O.K. Soc. Biol. Paris, Ixxix. (1916) pp. 971-3. 



t C.R. Soc. Biol. Paris, Ixxix. (1916) pp. 1126-30 (2 figs.). 



I C.R. Soc. Biol. Paris, Ixxix. (1916) pp. 1131-6 (3 figs.). 



