376 Mr. B. B. Woodward on the Radulce of 



even in tlie 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. Guenee, although he indicated his belief 

 tliat the Museum specimen was from West Africa. 



In his ' Monograph of Ophideridse ' Mr. Moore again 

 followed Walker, stating that Ophideres must be restricted to 

 its type 0. jjrincepSy and adopting for 0. fuUonica the name 

 Othreisj Hiibner (which is, of course, synonymous witli 

 Ophideres if we admit that typical 0. princeps is 0. 

 fullonica). 



The Ophideres princeps of Guenee, Walker, and Moore 

 thus remains without a generic or specific name, and may be 

 called Halastus intricatus. We have it from Old Cahabar, 

 Sierra Leone, Ambriz, and the liiver Niger. The family 

 must now be called Othreida3. 



LVI. — On the Iladula of Paludestrina Jenkinsi, Smith, and 

 that ofV. ventrosa, Mont. By B. B. Woodwakd, F.G.S., 

 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 [ = Hijdrobia) 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 those two 

 species were thought to be very closely allied, and, indeed, with 

 some it was a disputed point, since conceded, whether P. 

 Jenkinsi 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 



* Jouru. Couch, vi. (1889) p. 14:2; iigured iu 'Essex Naturalist," iv. 

 p. 214. 



