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132 
limbed seminal vesicle and Par asty lochus, and still more so as in 
Discostylochus with its well pronounced separated false seminal 
vesicles. In Cryptophallus it is evident that false seminal vesicles 
are being developed, because of the local increase in thickness of 
thc muscularis in the end-parts of the large seminal canals. 
Back of the axis of the penis lies the prostatic vesicle. It has 
almost a vertical position with the free proximal end protruding 
above the base of the penis. Its efferent duet forms the direct and 
straight continuation of the vesicle. The efferent duet is charac- 
terized by a decrease in the stoutness of the muscularis and by 
the faet that the epithelium becomes lower and glandless. Thus it 
is a considerably simpler type of organization than that in Stylochus. 
Consequently the vesicle and the efferent duet form a club-shaped 
organ with a proximal dilatation. The vesicle looks as if it were yet 
in an immature stage, but its epithelium, with a few quite small 
folds in the proximal part of the vesicle has densely packed giand 
cells in a pronounced secretory State. The outer circle of giand 
cells is expanded like a dub and has developed into a secretory 
cup. The prostatic secretion has a decided staining ability with 
eosin, but assumes a somewhat dirty red shade. Only a few scattered 
extracapsular giand cells could be discerned with certainty, but this 
might partly be due to the immature State of development of the organ. 
As in Cryptophallus wahlbergi, we have here a wide conical 
penis which has a vertical position in an antrum masculinum that 
has been reduced to a fissurc-like room or chamber. Also here the 
penis with its organs is located in a thickened ridge which forms a 
protruding part covered by a posterior pharyngeal diverticule lacking 
pharyngeal folds. Thus we have here splendid agreement with Cr. 
wahlbergi from South Africa. 
Kaburakia excelsa n. g. n. sp. 
(Plate III, Figs. 7—10. Plate IV, Figs. 23 and 29.) 
Locality: False Narrows, Nanaimo, Vancouver. 
Materi al: Three very large and three smaller specimens collected 
under stones at low-water June 29th, 1915, and pre- 
served in formalin. 
Habitus: The animals (Plate III, Figs. 8 and 10) have a 
