( 29 ) III. Descriptions of new Species of Aculeate Hymenoptera, collected at Panama hy R. VV. Stretch, Esq , with a List of described Species, and the various Localities where they have previously occurred. By Frederick Smith, Esq., President of the Entomological Society of London. [Read March 4th, 1861,] The Collection of Hymenoptera, described in the following paper, was most liberally presented to nie by Mr. Stretch. I need scarcely add, that this has greatly enhanced the pleasure which has attended the working out and describing of the species. A peculiar interest is attached to the Hymenoptera of Panama, forming, as it does, an intermediate station between North and South America. Amongst the Fespidce will be found species common to both countries j and the capture of Cryptocerus atratus shows the known range of that species to be over an ex-tent of country of not less tlian two thousand two hundred geo-graphical miles. The collection of specimens was accompanied by a number of very interesting examples of nests of Formicidce and Vespidce, and also by several valuable notes on the economy of some of the species. This is the first collection of Hymenoptera which I have seen from Panama, and will add greatly to our knowledge of the geographical distribution of species. Family F0RM1CID.E, Leach. Genus Formica, Linn. 1. Formica arborea, Smith, Cat, Hym. pt. vi. (FormicidtB), p. 44, 148. Hab. Brazil; Island ofMorago. 2. Formica ser'ice'wentris, Guer. Voy. de la Coq. Zool. ii. 205 ^ , Hab. Rio Janeiro ; Columbia ; Mexico. Formica albo-fasciata. F. fusco-nigra, abdomine albo-fasciato ; pedibus articulationi-bus pallide testaceis. Worker. Length 2f lines. Of a brownish black; the abdomen shining black, with a broad white fascia at the base of the second segment, not continued beneath ; the head oblong, nearly of equal
Descriptions of new species of aculeate Hymenoptera, collected as Panama by R.W. Stretch Esq. with a list of described species and the various localities where they have previously
BioStor
