136 
number markedly surpasses the amount of ocelli in the cerebral 
clusters. A look at text-figure 22 will be sufficient to note this, 
although only a part of the tentacular eyes (= the upper ones) 
are drawn. I must emphasize this foature of Kaburakia, as in Cryp- 
tophallus, a genus also possessing a ductus yaginalis, there is only 
an insignificant number of tentacular ocelli compared with the 
cerebral eyes; i. e. far less than one tenth of the number of the 
latter. In Cr. ivahlbergi there are about 10, in Cr. sondaicus 20 
eyes in each tentacular group, while here a couple of hundreds 
are found. I may also add that in Cryptophallus 
by far the greatest number of cerebral ocelli is 
distributed anterior to the tentacular line. 
In the epidermis the rhabdite cells are so 
extremely scarce that their presence can only 
be detected through a diligent search. On the 
other hånd, giand cells with granular acidophil 
secretion abound in such manner that the whole 
epidermis seems to be stained red in eosin pre- 
parations. The most frequent giand cells contain 
a coarse-granular, deeply stainable secretion, 
others a fine-granular secretion, showing a paler 
tint. The former secretion is perhaps a substitute 
for the rhabdites. The latter reach 10 in length, 
while the dorsal epidermis is 80 fn thick. 
membrane is unusually thick, partly contributing 
as it does to the marked consistency of the body. It measures 
20—30 jii and shows a lamellar structure. On account of the 
contraction of the powerful muscularis, it is laid in numerous small 
folds. The muscle wall of the body is very compact and its thickness 
in proportion to the epidermis is about twice that of Cryptophallus, 
The pigment patches, which give the upper surface of the body its 
characteristic pattern, are invested in the dorsal muscle layers; 
hardly any pigment is detectable in the parenchyma, while basement 
membrane and epidermis are absolutely free from pigmentation. 
In text-fig. 23 I have drawn the pigments patches at the posterior 
margin of the body to demonstrate their distribution and diminishing 
size. The figure refers to the type-specimen photographed on Plate 
III, Fig. 10. 
Text-fig. 23. 
Kaburakia excelsa. 
Arrangement of the 
pigment patches at 
the posterior end. 
16 X. 
The basement 
