ROTIPERA. 
689 
Mauritius, E. leery describes, under the name of Le Pou d, poche'hlanche,''^ 
a species of Coccus which has done much injury to the sugar-canes in that 
island. He describes the development of the larvse from the eggs, and the 
attachment of the female and mode of deposition of the eggs ; but from his 
description and figures of the male, and of its larva and pupa, it is evident 
that he has mistaken a minute Hymenopterous parasite for that sex of the 
Coccus. 
Eauvel has published some observations on the natural history of the Coccus 
of the Vine (Lecanium vitis) in Bull. Soc. Linn. Norm. vol. viii. pp. 290-296. 
Aspidiotus ? luzudcB, sp. n., L. Duf. Ann. Soc. Ent. Fr. 4® s^r. tome iv. p. 208, 
pi. 6. fig. 4, on the leaves of Luzula maxima in South-western France. 
kOTIFEKA 
BY 
J. Reay Greene, B.A. 
Moxon, W. Notes on some points in tlie Anatomy of Rotatoria, 
Trans. Linn. Soc. xxiv. 1864 (pp. 455-462, with a plate). 
Weisse, J. F. Ueber die Entwicklnng der Eier der Floscularia 
ornata, Ehr. Zeitschr. f. wiss. Zool. xiv. Band, 1864 (pp. 
107-8, with a plate) . 
Dr. Moxon^s notes on the Rotifera refer to the following 
points : — 
a. Determination of the dorsal and ventral aspects of the 
organism. 
h. Structural relations of the feelers (setse-bearing spots). 
c. The alimentary canal; and 
d. The water-vascular system. 
a. In the middle line of a Rotifer may be noticed, anteriorly, 
the dorsal feeler, and, posteriorly, the opening of the cloaca. 
By the presence of these two characters the dorsal aspect is best 
distinguished. The eyes are always situate on the dorsal side 
of the oesophagus, while the mouth, on the other hand, is 
ventral in its direction. When the dorsal and ventral sides 
differ in contour, the former is that which is arched, and along 
which the intestine runs. In such Rotifers, when locomotive. 
