1865.] 223 



B. Smilcyi somewhat resembles Tachyusa sulcata and uvida ; and 

 with the exception of these, or a species of ScopcBus, I do not know any 

 British Brachelytrous insect with which it can for an instant be 

 confounded. 

 The specific description, as given by Kraatz, is as follows : — 



Depressed, nigro-piceous, shining, with a grey pubescence. Elytra 

 and legs piceous. Head broad, transversely sub-quadrate ; forehead 

 deeply channelled. Thorax narrower than the head and elytra, deeply 

 foveolate at the base, and obsoletely channelled. Abdomen very 

 finely punctured. Length, \\ lin. 



Only seven specimens are known to exist in the Continental 

 collections. The first was taken by Dr. Aub6, near Paris ; and subse- 

 quently, six specimens were taken by Herr Puss, in Germany, under 

 half-dried dung and the carcase of a toad. 



I took one specimen by sweeping at Mickleham, on the 13th July, 

 1862 ; on the same day on which I took my first specimen of Oxypoda 

 glabriventris, recently described by Mr. Eye. I have made many unsuc- 

 cessful attempts to determine it ; and, at last, Mr. Crotch took it with 

 him to Paris, where Dr. Aube at once recognized it. 

 52, Burton Crescent. 



NOTES ON THE SOUNDS EMITTED BY INSECTS OF THE GENUS SETINA. 



I 

 BY M. A. GUENEE. 



{Translated from the Annales de la Socidtd Entomologique de France, ime s6rie, 

 4me tome, 1864, 3me trimestre.) 



In " Etudes sur le genre Lithosia " inserted by the Society in 

 its Annals for lS6i, I have brought forward the considerable 

 differences which separate the genus Setina from Lithosia, properly so 

 called. Among these differences, which the study of exotic species has 

 done nothing but since confirm, I have especially insisted on the 

 presence, in the genus Setina, of a particular organ which no one had 

 yet observed, and which consists of two large tympaniform vesicles 

 situated in the pectoral region. I added that I thought Nature 

 had not uselessly created these curious appendages, and that they 

 would be used to produce a sound analagous to that which has been 

 already remarked in Ohelonia pudica ; promising to verify my con- 

 jecture on the living insect, and to make known to my colleagues the 

 result of my researches. 



The provincial excursion of the Society in the valley of Zermatt, in 

 which I congratulate myself on having taken part this year, has put it 



