SOME PARASITES FROM CEYLON. 51 



The scolex is 0'13 mm. broad, the rostellum 0-062 mm. The 

 latter bears about one-third from its anterior end a circlet of 

 24 hooks, each 0"0091 mm. in length. The suckers are oval with the 

 longer axis longitudinal. They are 0078 mm. long and 0-047 mm. 

 broad. The cuticle is 0*0025 mm. thick, and beaeath it lie two 

 layers of longitudinal muscles, the external layer consisting of 

 bundles of 2-3 fibrils, the internal of bundles of 6-8 fibrils. About 

 twenty testicular follicles can be seen in each transverse 

 section. The cirrus-sac is small and pear-shaped, the receptaculum 

 seminis reaches almost to the middle of the transverse section ; 

 the yolk gland lies about in the centre of the segment, near it 

 lies the small shell gland ; the ovary lies in the central substance 

 and consists of a number of groups of glands which spread 

 out most on the side which does not bear the genital pores ; the 

 ova are O'OlS mm. in diameter. 



No calcareous bodies are found. Two longitudinal excretory 

 canals run along each side ; one of them is markedly coiled. 

 The eggs are oval, 0*052 mm. long and 0*042 mm. broad. 

 The spherical onchosphere is 0*026 mm. in diameter, its outer 

 capsule is beset with irregular tubercles. 



Habitat : From the intestine of Schneider's leaf -nosed bat, 

 Hipposideris speoris, Kalpitiya, Ceylon. 



AGANTHOT^NIA SHIPLEYI, Von Linstow. 

 PL I., figs. 8 and 9. 



Only one specimen, a microscopic preparation, was available, 

 and thus transverse sections could not be prepared. The tape- 

 worm was 13'8 mm. long and anteriorly 0"11 mm. broad, pos- 

 teriorly 0-49 mm. in breadth. The segmentation into proglottides 

 is not shown at all anteriorly, and but slightly shown posteriorly. 

 It is only indicated by the position of the reproductive organs. 

 Posteriorly the proglottides are 0-97 mm. long and 0*49 mm. 

 broad. The genital pores are irregularly placed in the centre of 

 the proglottis edge. 



The scolex is 0*24 mm. long, behind 0-18 mm. broad. The 

 rostellum is 0*12 mm. long and 0*10 mm. broad. The cuticle of 

 the whole scolex and of the body for a distance of ]'76 mm. is 

 beset with thickly-set fine bristles. 



In each proglottis there are some fifty testes. The cirrus-sac 

 lies behind the vagina, and is crescentiform with the convexity 

 anterior. The vagina bends back in a sweep towards the middle of 

 the hind mai-gin of the proglottis ; here lie the rounded yolk gland 

 and right and left a lobed ovary. The subcuticular cells are very 

 powerfully developed. The eggs were not yet developed. 



