88 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



food plants and altitudes in addition to localities. It is one of 

 a series of catalogues illustrating the collections in the Mexi- 

 can National Museum. An announcement on the cover states 

 that it is for sale at 30 cents Mexican. 



He also exhibited specimens of the deer botfly, reared by 

 Pratt in Texas and identified by Mr. Coquillett as the Euro- 

 pean species of Cephenomyia. He mentioned the resemblance 

 of this fly to certain of the Syrphidse and remarked on the 

 hosts of Oestridse in general. 



Mr. Knab stated that the family Oestridse is no longer rec- 

 ognized as a valid family by the best systematists. 



Mr. Knab showed specimens of a large buprestid, Etichroum 

 gigantea, collected at Panama by Mr. A. H. Jennings, the 

 entomologist of the Isthmian Canal Commission. One of 

 these specimens showed the dense waxy secretion, similar to 

 that of the weevils of the genus Li.vus, with which the beetle 

 is covered during life; this completely hides the metallic 

 colors of the integument which are so familiar in cabinet speci- 

 mens. The entire beetle is covered with this secretion, not 

 only above and beneath, but even on the under surface of the 

 elytra. The color of this coating on the elytra is a bright 

 greenish yellow with an orange cast; on the head and thorax 

 it is paler, the pronotum being broadly margined with creamy 

 white. A similar efflorescence is present in many Buprestidse 

 of the tribes Chalcophorini and Buprestini, but is rarely men- 

 tioned in works on Coleoptera. In Euchroma it has been 

 briefly mentioned by Lacordaire (Genera des Coleopteres, vol. 

 4, 1857, p. 21) and its nature understood. Recently it has 

 been alluded to in some of our forms by Col. T. L. Casey, 

 who speaks of the depressions which have remained un- 

 abraded as "pubescent areas." A coating of this kind may 

 be observed in species of many of our genera, although it is 

 seldom preserved in cabinet specimens. A hasty examination 

 of the North American Buprestidae in the National Museum 

 collection showed traces of such a secretion in the following 

 genera: Hippomehi*, (>\'(tscntiis, Chalcophora, Psiloptera, 

 Dicerca, Pcecilonota. A specimen of a species of I\vci/onoUi, 

 in the Hubbard and Schwarz collection, from Tucson, Ari- 



