432 DESCRIPTION OF TWO NEW 



the parasitic specimens to be forms new to science. One 

 of these is a new species of the genus Phora ; the other 

 I regard as possessing characters sui generis, and hence 

 define it under the generic title Platyphora, at the 

 same time bestowing on the species the name of 

 the discoverer, who worthily pursues entomological 

 researches, spite of many pressing public engage- 

 ments. 



The subjoined descriptions embrace the diagnostic 

 peculiarities of the insects in question. 



Phoea formicaeum, n. sp. — Nigro-einerea, fronte 

 setosa, caniculata ; antennis mediocribus, cinereis ; pal- 

 pis magnis, flavis ; halteribus flavidis ; pedibus totis 

 pallide flavis, inermibus, tibiis intermediis unicalcara- 

 tis, posticis niodice dilatatis ; alls subhyalinis, nervo 

 secundo simplici, nervulis vix undulatis. Long, vix 

 1 lin. 



Frons broad, grey, bristly, two large bristles being 

 close to the eye-margin ; down the centre is a deep im- 

 pressed channel, which at its lower end joins a channel 

 above the antennae, and at its upper end a channel round 

 the raised vertical triangle ; the space between these 

 two latter channels (comprising the true /rows) is about 

 once and a half broader than deep ; on the vertical 

 triangle are two bristles ; the third joint of the an- 

 tenna is moderately large, ovate, grey ; the arista short, 

 somewhat yellowish, almost naked ; the palpi con- 

 spicuous, all pale yellow, with a few short black bris- 

 tles at the tip ; on the cheeks are some short black 

 bristles. 



The thorax is grey or brownish grey, broad, not much 

 arched, the disk being nearly flat, and on the hinder 

 part absolutely concave ; on the disk there are no long 

 bristles, but a dense clothing of rather short black 

 bristles ; along the side of the thorax between the 

 humeri, the base of the wing, and the scutellum are 

 some long black bristles, and two on the thorax just 

 before the scutellum ; on each side of the scutellum are 



