145 
The eyes over the brain region are quite irregularly distributed, 
and not in any way bilaterally grouped.“ 
At this place I am giving the corresponding text-figures for one 
of my specimens (textfigs. 27 and 28), and shall add that frontal 
Text-fie. 27. Entevogonia pigrans Haswell, van novæ- 
zealandiæ Marginal eyes. a, At the anterior border; 
b, at the level of the mouth. 40 x; c, at the extreme 
’ posterior end. 40 x. 
eyes are scattered over the fore-end. The first observer has very 
likely failed to recognize the tentacular groups, as well as the very 
small 'prominences that actually represent rudiments of tentacles. 
As the latter are very insignificant and it is necessary to specially 
search for them, it would be an excusable fault. A mistake as to 
the nature of these prominences is excluded, as they are observed 
in the same place on all the specimens. A verification of the 
tentacular nature can be made on sections as the epithelium cove- 
ring them almost lacks giand cells. In order to distinguish between 
tentacular and casual groups of ocelli, it is sufficient to State that 
true tentacular eyes are located nearer the dorsal epidermis than 
cerebral or frontal ocelli. 
The location of these rudimentary tentacles is slightly in front 
Vidensk. Medd. fra Dansk naturh. Foren. Bd. 79. 10 
