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S. J. JOHNSTON. 



ducts lie behind the ovary. A receptaculum seminis, of 

 considerable size, pear-shaped or rather like a cornucopia, 

 lies on the right side, while at the same level but to the 

 left is a fairly large "shell-gland." 



Vsk. 



Fig. 5 — Transverse section Scaphanocephalus australis, in region of the 

 ventral sucke , to show the arrangement of the muscle fibres in the genital 

 and ventral suckers. Cm., circular muscle ; 6r.s„ genital sucker; L.m., 

 longitudinal muscle; M.c, muscle cells; R.m., radial muscle; V.sk., ven- 

 tral sucker. 



There is a short straight Laurer's canal in the middle. 

 The uterus, filled with numerous eggs, proceeds forwards 

 to the genital opening in a series of five or six loops, trans- 

 versely placed, and occupying the middle half of the body's 

 width, not extending outwards beyond the intestinal limbs. 

 The follicles of the yolk glands are small (0*027 mm.) and 

 exceedingly numerous ; in front not extending further for- 

 wards than the widely diverging parts of the intestinal 

 limbs and reaching back, along the lateral aspects of the 

 body to the extreme posterior end. Between and behind 



