376 Mr. B. B. Woodward on the Radule of 
even in the female, only exhibit one isolated white spot; the 
lower wings also being orange, with a uniform black border 
and no kidney-shaped patch, but with the base of the wings 
also blackish, a marginal series of buff spots, and the fringe 
opposite to these spots intersected with pure white. 
In his ‘Catalogue of Lepidoptera Heterocera’ Walker 
again neglected to look up the original description, but 
blindly followed M. Guenée, although he indicated his belief 
that the Museum specimen was from West Africa. 
In his ‘Monograph of Ophideride’ Mr. Moore again 
followed Walker, stating that Ophideres must be restricted to 
its type O. princeps, and adopting for O. fullonica the name 
Othreis, Hiibner (which is, of course, synonymous with 
Ophideres if we admit that typical O. princeps is O. 
fullonica). 
The Ophideres princeps of Guenée, Walker, and Moore 
thus remains without a generic or specific name, and may be 
called Halastus intricatus. We have it from Old Calabar, 
Sierra Leone, Ambriz, and the River Niger. The family 
must now be called Othreide. 
LVI.—On the Radula of Paludestrina Jenkinsi, Smith, and 
that of P. ventrosa, Mont. By B. B. Woopwarp, F.G.S8., 
F.R.M.S. 
WHEN in the autumn of 1889 my friend and colleague 
Mr. E. A. Smith had under observation the specimens of 
Paludestrina (= Hydrobia) to which he afterwards gave the 
name of P. Jenkinsi *, he handed some examples to me with 
the request that I would examine the radula and compare it 
with that of P. ventrosa, Mont. At that time these two 
species were thought to be very closely allied, and, indeed, with 
some it was a disputed point, since conceded, whether P. 
Jenkinst were anything more than a variety of P. ventrosa. 
Pressure of work at the time, followed by prolonged ill- 
health, prevented the completion of the investigation, or all 
doubts as to the specific distinctness of the two forms might 
speedily have been set at rest, as the accompanying notes and 
descriptions will serve to show. 
At the very first glance a dissimilarity in character is 
* Journ. Conch. vi. (1889) p. 142; figured in ‘ Essex Naturalist,’ iv. 
p- 214, 
