141 
we meet with the same feature, the presence of false seminal 
vesicles. It may further be added that in both the penis lacks 
peniS'Sheath, is unarmed, and orientated vertically. 
On the other hånd, there is a considerable difference in the 
position of the male apparatus. Cryptophallus has the male apparatus 
below the pharyngeal pocket, and this is the only occurrence of 
such a feature among all Acotyleans. In spite of this location, the 
prostatic vesicle is vertically placed, which is possible only through 
the inconsiderable size of this organ which is more simply organized 
than in any other Stylochid. There is a well-marked distance from 
the male apparatus to the pharyngeal pocket in Kaburakia, and the 
prostatic vesicle has the normal horizontal orientation usually 
occurring in the family. Contrary to the condition in Cryptophallus, 
it is also provided with numerous folds in its interior. In the latter 
genus there is a greater distance between the two sexual pores, 
while in Kaburakia the male aperture is more approached to the 
vaginal opening. Unlike the genus Stylochus the sexual pores are 
not near the posterior margin of the body. 
In the organization of the tentacles we have further dissimilarities. 
They are only „unbedeutende HervorwbIbungen“ in Cryptophallus 
(Bock 1913, p. 120), while in Kaburakia they are not only large, 
in the living State probably fingerlike projections, but are also 
retractable into the body, a kind of tentacle-sheaths thus being 
formed. 
Both genera agree in having a large number of eyes around the 
anterior part of the body. But in other respects the arrangement of 
eyes shows pronounced differences. Frontal eyes are scattered all 
over thé anterior body-end in Cryptophallus, while in Kaburakia they 
are absent. In the former genus the cerebral eyes are densely 
grouped and very numerous and by far the greater number of 
them lies posterior to the line connecting the tentacles. On the 
other hånd, the number of tentacular eyes in Cryptophallus is 
insignificant (10—20 in each cluster), while in Kaburakia there 
are a couple of hundreds in each tentacle. 
As Cryptophallus already includes two doubtlessly closely related 
species, I think it necessary to give generic rank to this new 
species. Thus the generic name Cryptophallus will still express the 
singular location of the male apparatus occurring in its species. 
