328 



Memoirs of the Indian Museum,. 



[Vol. VII, 



(3) The alate condition of the right spicule, and the presence of an accessory 



piece, in the male. 

 (4)- The presence of a tubular appendage, carrying the vulva, in the female. 



A nematode has been described under the name Camallanus bungari from Bungarus candidus, 

 in Java, by MacCalluin (1918). The description of this form is not easy to understand, but it 

 appears impossible to identify it with the species just described, the most striking difference being 

 that, whereas in the present form the vulva is situated on a very conspicuous outgrowth from the 

 body-wall, in C. bungari it appears to have had no prominent lips, and to have been so inconspicuous 

 that some doubt remained as to its position. At the same time it maybe observed that the accompany- 

 ing figure in MacCallum's paper {I.e., fig. 65) gives quite a different impression from the description, 

 and shows an arrangement of the uterus and vagina hitherto unknown in the genus Camallanus. 



Family GNATHOSTOMIDAE, Rauhet, 1895, emend. Baylis and Lane, 1920. 

 Subfamily SPIROXYINAE, Baylis and Lane, 1920. 

 Genus Spiroxys, Schneider, 1866. 

 Spiroxys annulata, sp. nov. 

 (Figs. 64, 65.) 



Host : Chitra indica. ' Position : stomach. Locality : Budha Stream, Ludhiana, 

 Punjab. 



This species, which was collected by Dr. Baini Prashad, approaches closely to 

 the only other Indian species of Spiroxys at present known (S. gangetica, Baylis and 

 Lane, 1920). In size, and also in the dimensions of many of its organs, it is interme- 

 diate between that species and the genotype, 8. contorta (Rud.). 



The lips, when seen in a lateral view, have a very similar shape to those of 



8. gangetica, the dorsal and ventral lobes 

 being placed almost at right angles to the 

 middle lobe. In a dorsal or ventral view, 

 however, the thickness of the lips is rela- 

 tively much less than in 8. gangetica, and 

 they are seen to be much more wedge- 

 shaped (fig. 64), so that the head has not the 

 same square appearance in such a ^iew. 

 The six pointed teeth on each lip (two on 

 each lobe), characteristic of 8. gangetica, 

 are absent in the present species. The 

 cuticular thickening on the inner surface 

 of the middle lobe is well developed, but 

 does not form a distinct tooth at its apex. 

 The total length is from 20 to 25*4 mm. 

 in the male, and 30 to 34 mm. in the female. 

 The maximum thickness is o-5-0'6 mm. in the male, 0-8-0-85 mm. in the female. 

 The diameter of the lips, measured dorso-ventrally, is 0'i6 mm., and their length 

 0'o6 mm. The transverse striations of the cuticle are exceptionally coarse (up to 



Fig. 64.- 



do.rsal view 



ol mm/. 



-Spiroxys annulata. 



Head of female 



