452 THOS. H. MONTGOMERY jr., 
process. In this paper he describes the epithelial lining of the “Ei- 
behalter’’, considers that the latter are formed before the mesenteries, 
are “vielleicht modificirte Excretionsorgane”. In his third paper (1894) 
VEJDOvVsKŸ describes the development of all these organs: the 
“Ovarien” arise as segmental outgrowths of the paired “Gonaden”; 
the growth of the “Ovarien” forces the “splanchnic” against the ~ 
“somatic” layer of the peritoneum, so that the “Ovarien” do not lie 
in the “Cölom”. Though VespovskyY noted the radial arrangement of 
the ova in the ovaries, ‘he failed to note that this is due to the per- 
sistence of the lobular walls of the germinal epithelium. 
ViLLOT (1887) describes a single tubular pair of ovaries, each 
with two tubular, parallel branches; one lateral (equivalent to VEJ- 
DOVSKY’s “Eiersack”), the other dorsal (equivalent to VEJDOVSKY’s 
“Eibehälter”); the medio-dorsal body cavity he considers an unpaired 
tubular branch, a part of the reproductive system. All of these he 
finds to be lined by the same kind of epithelium. In another paper 
(1889c) he describes two “tubes ovariens” in the dorsal region, com- 
parable to the “tubes testiculaires”, each with an external “conjunctive” 
and an inner epithelial layer; the ova develope in lateral diverticula 
(“graffes ovigères”) of the “tubes ovariens”, and are formed by 
lateral evagination of the latter, but this is a continuous and not a 
segmental evagination. “L’ovaire des Gordiens comprend à la fois ce 
que VEJDOVSKY désigne sous le nom d’ovaires et du réceptacle 
‘des œufs (Eibehälter).” The ova pass first into the ovarian tubes 
when mature, in consequence of this increase in volume in con- 
junction with the pressure of the lining epithelium. The Gordii re- 
produce only once in a life time. 
von Linstow (1889) describes the genital organs as consisting 
of: two “Ovarien”, each a long tube with an epithelial lining (= VEJ- 
DOVSKY’s “Eiersack”); two “Eiersäcke” (= VEJDOVSKY’s “Eibehälter”) ; 
and the “Rückencanal”, which also contains ova after oviposition. The 
“Ovarien” after oviposition show only “eibildende Drüsen” on their 
inner walls (these equivalent to the “Eierstöcke” of VespovskyY, 1886). 
In another paper (1891) von Linstow describes more fully the 
“Rückencanal” (my medio-dorsal body cavity); he finds that at its 
anterior end it communicates by two branches with the “Eiersäcke”, 
and at its posterior end with the “Ovarien”; he concludes that the 
last ova to be discharged pass into this canal at its posterior end, 
along it anteriorly and so into the “Eiersäcke”, then posteriorly in the 
latter to the cloaca. (The mechanics of such a process are practically 
