702 



DR. F. E. BEDDARD OlSr 



with Davuinea stralhionis*. The rostellum proper and neigh- 

 bouring structures of Ophryocotyle insignis, with which I am 

 about to compare the corresponding structures of Gotugiiia 

 margareta, were thus described by Fuhrmannf: — "Das muskulose 

 Rostellum ist sehr weit vorstiilpbar, wobei es der vordere Teil der 

 Skolex ist, der den grossten Teil des mJichtigen scheitelstandigen 

 Haftorganes darstellt." The figure given by Fuhrmann J of a 

 longitudinal section through the entire " Haftorgane " (and the 

 rest of the scolex) agrees, as will be seen, very closely with the 



Longitudinal section through scolex of Cotugnia margareta. 

 a. rostellum, in which the hooks are not shown. S. suckers. 



annexed drawing (text-lig. 1) of the same region of Coticgnia 

 margareta. The folded apical region of the scolex is present in 

 both, and there is an evident contrast in this with the conditions 

 observable in a congener of my species, viz. Cotugnia polyacantha 

 — which latter species appears to resemble more closely various 

 species of Davainea § in having a clear-cut and smooth region of 



* "On Tmnia stvutliwrns (Parona) and allied Forms," P.Z.S. 1915. p. 589. 



f "Nene Davaiiieiden," Centralbl. Bakt. u. Paras, xlix. p. 94. 



X Loc. cit. p. 95, fig. 1. 



§ P. Z. S. 1915, p. 592, text-fig. 1. 



