562 Panopa* Glycymeris 



(curialis. I have not seen ; but am assured it is sometimes taken.) 



94. matronula. Near Berne, Zurich, and other places ; but a rarity 



everywhere. (I have already mentioned (p. 220.) having found, 

 near Thun, a female in which the fore wings were absolutely want- 

 ing : she was sitting on the leaf of a hazel bush.) 



95. villica. Near Yverdon and Martigny ; rarely. 



96. Caja. Very common everywhere. 



97. Flavin. Is said to have been found by Dr. Amstein, at Marschlins, 



in the Grisons; but I have never heard of its having been further 

 noticed in Switzerland. (Duponchel cites it as being found on the 

 mountains of Switzerland ; but does not mention what mountains, 

 or give his authority.) 



98> fuliginosa. Very common. The larva which have passed the winter 

 are found in plenty, in the spring, under stones. 



99. luctifera. About Bipp, at foot of the Jura; not rare. 



100. mendica. About Geneva; rare at Berne (and at Thun). 



101. menthastri. Very common everywhere. 



102. lubricipeda. Much rarer than the last. 



(parasita. Alps of Valais; rare; first taken in 1830.) 



And here, I am sorry to say, we break off for the present. 

 Thun, Canton of Berne, Switzerland, June 22. 1835. 



[In IV. 148, 149. Mr. Spence has made notice of the 

 facilities and extensive assistance which M. Auguste Prevost 

 Duval of Geneva is capable of rendering those who may be 

 anxious to possess themselves of lepidopterous and coleop- 

 terous insects " of the Swiss Alps, the South of France, and 

 Germany." A short list of the rarer of the species of which 

 he can supply specimens is given in IV. 149.] 



Art. VI. Descriptions and Figures of Panop&& Glycymeris, a 

 rare, and Aribmia coronata, a newly ascertained, Species of British 

 Shell. By Mr. William Bean. 



PanopjE^ Glycy'meris. {figs. 50, 51.) 



Synonymes. — ikfya Glycymeris Don., Brit. Shells, t. 142. Panopae v « 

 Glycymeris Turt., Biv. Brit., p. 42. 



Shell very thick, oval, equivalve, inequilateral, gaping at 

 both ends, coarsely wrinkled transversely. Beaks almost cen- 

 tral, from which two longitudinal ridges cross the shell like 

 the letter V. The anterior end a little rounded, the posterior 

 obliquely truncated. A single conic tooth and two distant 

 muscular impressions in each valve. As in the rest of the 

 shells of this genus, the ligament is external, large, and the 

 fulcrum prominent. Colour white, covered with a yellowish 

 wrinkled epidermis. Length, 2\ in. ; breadth, 2>\ in. 



