4 Records of the Indian Museum. [Vol. XIX, 



receives, just before curving upwards, the fertilising duct from the 

 receptaculum seminis. The vitteline duct opens into it a little fur- 

 ther on. The distal portion of the oviduct (which has been desig- 

 nated the ootype (P.U), or primary uterus, opens into the second- 

 ary uterus (S.U) by a longitudinal slit on the ventral surface 

 of the secondary uterus. The secondary uterus is a large 

 elliptical chamber, extending from close to the isthmus of the 

 ovary to very near the anterior end of the proglottid. It has no 

 external aperture and the dehiscence of the proglottid probably 

 takes place in the same manner as has been described by Haswell 

 for P. vagans. The shell-gland (S.G) is a compact structure sur- 

 rounding that portion of the oviduct which is situated a little in 

 front of the opening of the vitteline duct into the oviduct. As 

 seen in sections, the shell- gland appears to be connected with the 

 oviduct by minute tubules, through which the secretion is poured 

 into the duct. The vagina (Va) opens immediately in front of the 

 male opening by a fairly broad aperture into the shallow genital 

 pit, which is situated nearer the posterior than the anterior ex- 

 tremity. Its terminal portion is swollen to form a barrel-shaped 

 structure, which probably serves for the storage of spermatozoa 

 until they can find their way to the bag-like receptaculum seminis 

 at the end of the sinuous vaginal duct ; from the barrel-shaped 

 dilatation a thin tube leads backwards and upwards. A little 

 above the origin of the main vas deferens this tube curves back- 

 wards and is continued, dorsal to the secondary uterus ; eventually 

 below the isthmus of the ovar}^ it is dilated to form the vesicula 

 seminalis. From the bay-like receptaculum seminis the fertilising 

 duct leads to the oviduct, as has already been described. 



The vitteline glands (V) are situated laterally throughout the 

 length of the proglottid. They are ovoidal structures '4 mm. in 

 diameter. A fine duct leads from each glandular unit, these tubules 

 then unite into two ducts, one on either side, and the pair further 

 unite to form a median duct, which opens into the oviduct a little 

 below the shell-gland. 



In the last attached segment the whole of the anatomy was 

 made out in two cases. The secondary uterus is, however, in seg- 

 ments still attached, only a tubular structure without any eggs. 

 In other details they resemble the free proglottides. In the more 

 anterior segments all the structures are not developed and cannot 

 be seen. 



Phyllobothrium foliatum, Linton. 

 (Plate I, figs. 2, 3.) 



Four specimens from Rhynchobaius djeddensis (Forsk.), Ceylon 

 Pearl Banks, February 3rd, 191 1. 



Linton (5) described the species in 1890. His specimens were 

 obtained from Trygon Centura caught at Woods Hole, Mass., in 

 1887. He subsequently recorded the species from Carcharinus 

 obscurus at Beaufort, North Carolina, July nth, 1902. The spe- 



