BEETLES. 67 



One of the prettiest European Longicorns is Rosalia Alpina, 

 Linn., which is not uncommon in Switzerland. It is about the size 

 of Aromia Moschata, and is covered with a delicate pale-blue bloom, 

 with a black band and some smaller markings on the elytra. It is 

 met with on the trunks of decaying copper-beeches throughout the 

 summer. 



Some of the smaller South American Longicorns are delicately- 

 formed insects, with curious tufts on their bodies. Thus, Cosmosoma 

 Speculiferum, Gory, is black, with the scutellum, and a large square 

 spot in the middle of the elytra on the suture , yellowish white ; the 

 under surface is also silvery. The antennae are very peculiar, being 

 ciliated to the middle, beyond which is a large tuft of hair ; the 

 hind tibise are also slightly ciliated. In Coremia Hirtipes, Oliv., 

 a slender black species, the antennae are much shorter than in 

 Cosmosoma, and are simply filiform ; but the hind legs are very- 

 long and slender, especially the hind tibiae, the middle of which is 

 decorated with a tuft of hair greatly resembling that upon the 

 antennae of the other genus. Concerning this latter species, Mr. 

 Bates remarks : ^ " Found throughout the Amazons, flying slowly- 

 over dead timber in new clearings. It resembles a large Cidex." 



The genus Clytus, Laich., includes a great number of beetles 

 found in all parts of the world. The European species are some- 

 times called " Wasp Beetles," being about half an inch in length, 

 with comparatively short antennae, and generally black, with yellow 

 bands or spots. The beetles are found on timber, or on flowers, 

 and are not uncommon ; they are active on the wing. 



Purpuricenus, Serv., is a genus containing handsome species, 

 found in most parts of the world, several of which inhabit the 

 Mediterranean region. One species only, P. Koehleri, Linn., is met 

 with as far north as the southern slopes of the Alps. It is nearly 

 three-quarters of an inch in length, and is black, often with a red 

 spot on each side of the thorax ; the elytra are of a purplish red, 

 with a large black spot in the middle of the suture of the elytra. 

 Most of the other species are also of a bright red colour, varied 

 with black. One of these is F. Bai-harus, Luc, from Algeria. 



Tracltydcres Variegatus, Perty, is an example of a well-known 

 Brazilian genus ; it is black, with reddish-yellow markings. 

 Megaderus Stigma, Linn., is a very similar species from Cayenne 

 it is black, with an oblique yellowish streak on each of the 

 elytra. 



1 Trans. Ent. Soc. Loncl. 1870, p. 395. 



