100 
fully separated, clusters (text-fig. 2). They blend especially in their 
posterior parts. The number of cerebral ocelli, about 150, is rather 
moderate for the size of the body. Most of them occur in dense 
clusters behind the line connecting the two tentacles. The frontal 
eyes are sparse, being made up of some indistinct groups of a few 
eyes. Such eyes also occur laterally and fronto-laterally toward the 
tentacles. The tentacular groups comprise a considerable number 
of eyes and most of them are embedded in the interior of the 
tentacles. As a result, the latter appear as two black-tipped pro- 
minences (Plate III, Fig. 6). 
The anatomy of this species, well characterized through its 
exterior appearance, deserves no extensive study, as it agrees fairly 
well with the type of the genus. A few features may, however, 
be mentioned. 
The epidermis hardly contains any typical rhabdites. Instead of 
them and, as far as I can see, substituting them, there is a 
large-granular acidophil secretion. The granulæ are of fairly even 
size, intensively stainable with eosin, and hold about 2 (å \v\ diameter, 
thus surpassing the granules of Shell giands about two or three 
times. The giand cells in question abound especially in the dorsal 
epidermis, and occur in such large numbers that, when examined 
at a low magnification and by use of hematoxylin-eosin preparations, 
they give it a uniform red colour. 
On the ventral side of the animal, the muscle wall of the body 
is about three times the thickness of the ventral epidermis. On 
the dorsal side it is, of course, much thinner, as it lacks the 
inner longitudinal layer; thus the high dorsal epidermis nearly 
equals the dorsal muscle wall in stoutness. The dorso-ventral mus- 
culature appears unusually well-developed, in remarkable contrast 
to the muscle wall of the body, the fibres occurring in excessive 
numbers and showing great coarseness. The parenchyma seems 
rather consistent. 
The extremely folded pharynx is on the larger specimen partly 
protruded through the mouth and forms a dense rosette visible on 
the specimen made transparent in oil and reproduced on Plate III, 
Fig. 5. The pharyngeal pocket, holding about half the length of the 
animal, does not extend very far back (text-fig. 3), there being a 
well-marked distance to the male apparatus. Its side-pockets are 
