Entomological Society. 



6391 



Mr. Janson observed that he believed the discovery in Britain of Tachyv.sa 

 concolor was due to Dr. Power, from whom he had received the species some months 

 back; he had likewise seen it in (he collection of Mr. H. Adams; Mr. Squire 

 had also met with it at Hammersmith, and had long since placed it in his cabinet 

 with its legitimate specific appellation. 



With respect to Symbiotes latus, Redt., Mr. Janson remarked that he had been for 

 some time past perfectly familiar with it as a British insect. He had first taken it 

 beneath the loose bark of a dead tree, in which a formidable colony of Formica flava 

 had established itself for some years ; the beetles were moving about amongst the ants. 

 Redtenbacher says (Faun. Austr. 2nd Ed. 371) that " the species " of this genus, of 

 which he describes two, " live among ants.'' That Symbiotes latus is not, however, 

 a myrmecophilon, in the strict sense of the term, Mr. Janson stated he had 

 subsequently satisfied himself, as he had found several individuals subsisting on a 

 species of mould growing on a rotten elm stump, more than a mile distant from the 

 spot in which he had first discovered it, and certainly unaccompanied by any 

 ant. Mr. Janson added that Microchondrus (Guerin), Wollaston, Ins. Mad, 196 

 (1854) was coincident with Symbiotes, Redt., and that he should probably have occa- 

 sion to return to this subject at a future Meeting. 



Mr. Stevens exhibited some Coleoptera from the interior of Peru, amongst which 

 were a fine new species of Psalidognathus allied to P. Friendii, and an Agaocephala 

 very distinct from all known species of that genus. 



Mr. A. F. Sheppard exhibited some Coleoptera taken at Geelong, Victoria. 



Mr. Janson exhibited a specimen of OxypoJa spectubilis, Maerkel, Germar, 

 Zeitschr. f. d. Entom. v. 217, 47 (1844) ; Kraatz. Naturgesch. d. Ins. Deutschl. ii. 

 162, 2 (1856), taken by Mr. R. Hislop, near Falkirk, during the past season, 

 transmitted him by that gentleman for identification. He remarked that the insect 

 had been first found in Saxony associated with Formica fuliginosa, and was hence 

 considered and described by Herr Maerkel as myrmecophilous, but it was sub- 

 sequently taken near Berlin, among damp fallen leaves, unaccompanied by ants: the 

 individual exhibited occurred " amongst grass.'' Dr. Kraatz, /. c, gives it as a dis- 

 tinct species, stating, however, that it appears to him not improbable that it will ulti- 

 mately prove to be a dark form of O. ruficornis, Gyll., but that a long series 

 of examples was requisite, in order definitely to determine this question. Mr. Janson 

 had carefully compared the present specimen with four individuals of O. ruficornis, 

 Gyll., Kraatz, and had been unable to detect any structural distinctions, the 

 only point of disparity being in colour : thus, O. spectabilis has pitchy black 

 antenna?, the three basal joints alone red, the thorax and elytra likewise pitchy black, 

 the humeral angles of the latter rufous. O. ruficornis has the antennae and lateral 

 margins of the thorax rufous, the elytra rufo-testaceous, with the region of the scu- 

 tellum dusky. 



Mr. Edwin Shepherd exhibited a specimen of Stenus palustris, Erich., a species 

 hitherto unrecorded as British, taken by Mr. F. Bond, in the fens near Cambridge. 



Mr. Adam White exhibited a sketch of a curious Isopodous Crustacean, recently 

 sent home by F. M. Rayner, Esq , Surgeon of H.M.S. Herald, and taken by him on 

 Flinders and Hummock Island; it belongs to the family Sphasromida;, but is 

 distinguished from every isopod hitherto described or seen by Mr. White, in having 

 a loDg horny projection from the epistome; the facetted eyes are conspicuous on each 



