BULLETIN OF THE LABORATORIES 
58 
bears several elongated setae. The maxtax is oval and seems to be 
but slightly armed. . It is furnished, however, with distinct annular 
bands of muscles. The eye is cervical, and is seated on the under 
side of a considerable ganglion. The foot is multiarticulate at the 
base, as in Brachiomis. Two distinct joints follow this portion, the 
last being longer and bearing two oval, appressed spines. Of the 
internal organs little was seen. The stomach is glandular and the 
egg of but moderate size. The vascular system was not seen. 
Length, .24 mm., height, .15 mm., width, ,10 mm. Frontal pro- 
cesses, .03 mm., spines of foot, .025 mm., last joint, .02 mm. 
GENUS ANUR.EA, Ehr. 
Closely related to Notens and Brachiomis is a genus of curious rotifers in 
which the foot is entirely absent ,so far, at least, as can be seen. As in Brachio- 
nus, the anterior opening is protected by spines or teeth, while there may or may 
not be simtlar teeth behind. The lorica is usually distinctly separable into a 
dorsal and ventral shield, and the dorsal scutum, is marked off into geometrical 
figures by raised lines. There is a single cervical eye. Tbe egg very generally 
remains attached to the body and may be mistaken for a part of 'it. 
Anuria sp. 
A species differing from all European forms is very common in the 
West. The form is hexagonal in outline, the length being 1.4 times 
the width (exclusive of spines). The anterior margin of the hexagon 
is wider than the posterior. The dorsal scutum is produced into six 
long spiny teeth, of which the middle pair are much the longest and 
are strongly curved outwards and downwards. The remaining pairs 
are sub-equal and project outwards like the horns of an altar. The 
ventral part of the anterior margin is excavated in the middle and 
bears a series of small sharp teeth. The whole shell is ornamented 
with circular prominences, and, in addition to this, above there are 
strongly raised lines blocking off the shell into thirteen regular areas 
and leaving two other areas about the front. The character of these 
ridges is best seen from a side view. The eye is cervical and the 
trochal cilia are strong for the genus. There is also a sensory tube. 
The following measurements, owing to an accident, may not be 
accurate, but will give the proportions ; Length, .1 mm. , width, .054 
mm,; longest spine, .024 mm. 
