BY VERA IRWIN -SMITH. 01 



Schueicler's figure ol' tbe caudal bursa ((S'ee Text-tig^) shows no unpaired 

 papilla and only four pairs of internal papillae; but in his description he makes 

 the statement "6 unmittelbar hinter der unpaaren Papilla." 



In comparing this species with P. abbreviata be says that the denticles on 

 the lip of tbe latter foi-m an uninterrupted row along the edge, and that the 

 only difference in tbe aii'angement of tbe caudal papillae is that in P. abbreviata 

 tbey are fuither from tbe median line. 



Physaloptera ketusa Kudolphi, 1819. 



External labial tooth notched, the notches not extending to the base. Inner 

 teeth longer. Internal face of lip beset with short spike-shaped processes; a pair 

 towards each side of the base, dorsal and ventral, a pair midway between these 

 and the apex of tbe lip. Tbe two branches of the uterus extend far towards the 

 posterior end. Caudal papillae arranged as shown in the figure. Measurements 

 as given in the table. 



Schneider mentions that be has observed ecdysis in a larva 7 mm. long, and 

 that ripe eggs are first found in a female 30 mm. long. 



Physai.optera liRiTAXiuA Skrjabin. 



Seurat makes a brief reference to this species (1917, p. 47). He says that 

 it resembles P. pallaryi in tbe conformation of the buccal lips, but differs from 

 it by its much superior stature, by the relatively slighter length of the oesophagus, 

 and by the different form of the tail in the female. 



I have not been able to trace the original description of the species, nor to 

 find any other reference to it. 



Ldterature. 



1861. — Revision der Nematoden. Sit~. Akad. Wiss. Wien, Math- 



Naturiv. CI. (1860), xlii., p. 652. 

 Gedoelst, L., 1916. — Notes sur la faune parasitaire du Congo beige. Rev. Zool. 



Africaine, Brusselles, v., pp. 1-90. 

 Irwin-Shith, v., 1921. — Notes on Nematodes of the genus Physaloptera, with 



special reference to those parasitic in Reptiles. Part i. Proc. Linn. Soc. 



N.S.W., xlvi., pp. 492-502. 

 Leiper, R. T., 1908. — An account of some helminthes contained in Dr. C. M. 



Wenyon's collection from tbe Sudan. Rep. Wellcome Research Lab., London, 



iii., pp. 187-199, Pis. 21-22, figs. 44-50. 

 LiNSTOT?, 1883. — Nematoden, Trematoden und Acantbocepbalen, gesammelt von 



Prof. Fedtscbenko in Turkestan. Arch. Naturg., xlix., pp. 274-314, Fls. 6-9, 



figs. 1-52. 

 1895. — Untersuchungen an Nematoden. Arch. Mikr. Anat., pp. 509- 



533, PL 30. 



-Nematoden aus der Berliner zoologischen Sammlung. Mitt. 



zool. Samml. d. Mus. f. Naturk. Bert, i (2), pp. 1-28, 6 Pis. 



1908.— Helminthes. Nematoden und Acantbocepbalen. (In L. 



Schultze, Zool. u. Antbrop. Ergeb. e Forscbungsreise in Sud Africa. Bd. 1, 

 Leif. 4.). Benk. med. Ges., Jena, xiii., pp. 19-28, 1 PI. 

 Parona, C., 1890.— Sopra alunei elminti di vertebrati birmani raccolti da Leon- 

 ardo Pea. Ann. Mus. Geneva, ser. 2, vii., (xxvii.), pp. 765-780, Pl. 3. 



