120 SPOLIA ZEYLANICA. 
‘¢ Die merkwiirdige Erscheinung an den weiblichen Copulationsorgan 
der vorliegenden Art (A. speciosus) ist nun aber der Umstand, dass 
von der Stelle, wo der unpaare Driisengang in die Vagina einmiindet, 
ein kurzer Verbindungsgang zum Trichter des Uterusstieles abgeht 
und dadurch eine Communication mit dem Uterus herstellt....”* 
In that species, too, the connecting passage “ empfangt ebensowenig 
als der Uterus Schalendriisen.” Then, the two structures in question 
differ slightly from each other in their respective relative positions 
and degrees of development ; that is, in Artiocotylus speciosus the 
structure is a simple canal passage, which arises from the proximal 
part of the uterus and ends in the vagina, while in the present 
species it is a spacious thick-walled cavity connecting the middle 
part of the uterus to the proximal end of the glandular duct. Thus, 
the female genital ducts are compared in this manner, and also when 
the probably superficial resemblance shown by the ventral ciliated 
organs and the suckers is borne in mind, the two otherwise remotely 
related forms may appear to exhibit a very close relationship. But 
at present I am not in a position to decide whether this interesting 
similarity has any phylogenetic significance. 
From the description and some collations so far given with regard 
to the principal specific characteristics, it will be manifest that the 
present species belongs to the Rhynchodemide, and cannot be 
legitimately attached to any of the seven genera composing this 
family. In some external characters several of the seven genera 
bear more or less close relationships to the present species. The 
following table will make clear the comparison :— 
X means that the animal possesses the character of the heading 
under which it is placed. O means that the animal does not possess the 
character of the heading under which it is placed. 











Sole Ridge. | ae aet | Sree Body Form. a 
on 
Bs 
So ae doe 
ao Aye o 
| | ae 22 Os 
eg Bee ee ae eee eee 
BS Ble seS aoe Sa) Beas = hal tae 
go a ee ee a ae es 
Rhynchodemus KO (Oly eee ONO Xa Xe OT Oy iO eee 
Microplana O Ge Oy a ? XxX MONO TAOm pes 
Amblyplana KEIO HOW SON PES TOUS SK 6 2ST ea anne 
Nematodemus OO ex ? ? XO O21 Onan 
Platydemus OMX GO ligase O} exe OL - Oye | Ope 
Dolichoplana ye ee! BON RON SO” SOW IXeE EO)! OM meer (Ol. @ laeepye 
Othelosoma tele oe Ome O 2 ? DG O Bee O ji heosties (0) 
Present species Rie) Oa Oilhe Xe ON oe Ol eee On EO Omen 
* Von Graff, op. cit., pp. 210-211. 
