48 SPOLIA ZEYLANJCA. 



bandes " living in the Moluccas and from a " Varan du Nil " from 

 Senegal, and he distinguished two species Diitliieraia expansa from 

 the first-named host and Duthiersia elegnns from the other. Later 

 •writers however recognize but one species. 



Some of the specimens sent me by Dr. Willey were taken from 

 the duodenum and intestine of Varanus salvator taken at Horana, 

 others from the duodenum of V. bengalensis taken at Bolgoda. 



In the article by Monticelli and Crety quoted above, the authors 

 place this genus with Solenophorus in a sub-family Soleiiophorinae ; 

 on the other hand Liihe (and Braun in his Cestodes* follows 

 Liihe) places Duthiersia with DihotlanocephaUis, Sc\jplioceplialus, 

 Bothtndlumy Diplogonoporus, and Pi/ramicocephalns, in the sub- 

 family Dibothriocephalinae of the family Bothriocephalidse. 



Liihe remarks : " Die bisher angenommene feine hintere 

 OefEnung der angeblich trichterformige Saugorgane istan den von 

 mir untersuchten Exemplaren des Berliner Museum nicht vor- 

 handen, sie muss daher an der Pariser Exemplaren ein durch die 

 Sonde hervorgerufenes Kunstprodukt sein. Die von Crety und 

 Monticelli gebildete Unterfamilie Solenophorina (sic) verliert 

 durch diesen Nachweis ihre Existenzberechtigung." 



I have made two series of sections through the heads of two 

 specimens oi D. finihriata, — all I could sacrifice to the knife. — and 

 each of these series of sections, one of which was cut in the 

 longitudinal vertical and the other in the longitudinal horizontal 

 plane, shows the pore originally described by Pj. Perrier, opening 

 posteriorly from each bothrium on to the outside. 



The pore is truly very small, and if the section be in the plane 

 of the narrow tube it scarcely occupies more than one section, but 

 if it be cut obliquely it extends into three or four sections. It is 

 much smaller in the Ceylon specimens than one would have 

 expected from Perrier's illustrations, but it is most certainly 

 there. The walls of the bothria are well supplied with large 

 water-vascular trunks, which, when full, may give a certain 

 tensity and rigidity to the organ. The nerve supply is also 

 conspicuous. 



BOTHRIDIUM PYTHONIS, Blainv.f 



PI. I., figs. 11 to 13 aud figs, iri and 16. 

 Synonyms : Prodicmlia ditrema, Lebl. Atlas to the work 

 mentioned in the note f at the foot of the page. 



Bothridium laiiceps, Duvern. Ann. Sci., nat. XXX., 1833. 



* Bronn's " Thier-reich," 1900. p. 1689. 



t Bremser " Traite zoologique et physiologique sur les vers intes^inaux de 

 I'homme" trad, par Grundler : revu et augmente des notes par M. de Blainville. 

 Paris, 1«24. 



