346 INSECTA. 



brown, and the abdomen maculated with the same colour. It 

 is very rare in the environs of Paris, but common in the depart- 

 ment of Calvados. It is the Mouche armee odorante (Strat. 

 olens) of the Tableau Elementaire de I'Histoire Naturelle des 

 Animaux. It diffuses a strong odour of Melliot sometimes even 

 after death *. 



Beris, Lat.^ Metg.," 

 Where the antennae are a little longer than the head, with their 

 two first joints of equal length, and the third forming an elongated 

 cone. The scutellum exhibits from four to six spines f . 



Cyphomyia, Wied., 

 Where the antennae are still more elongated, with the third joint 

 longer than the second ; the third is linear and compressed. The 

 scutellum has two spines J. 



Those have antennae which throw out on each side, near the mid- 

 dle, three or four linear, haiiy threads, the superior ones silky ; they 

 are almost setaceous near the extremity. The scutellum has four 

 teeth. 



Ptilodactylus, Wied. 



They have the general appearance of a Beris and a Cyphomyia §. 



In the third section — Stratiomydes, Lat. — we also find antennae 

 consisting of three joints, the last of which, exclusive of the stilet or 

 seta, presents at most five or six rings. This stilet, or that seta, exists 

 in almost all of them, and in those where they are wanting, the third 

 joint is elongated and fusiform, and always divided into five or six 

 rings. The wings are always incumbent one on the other. In seve- 

 ral of those species where the antennae terminate in a somewhat oval 

 and globular club, and always furnished with a stilet or a seta, the 

 scutellum is not spinous. 



This section comprises the genus 



Stratiomys, Geoff. 



In some, the third joint of the antennae is elongated, fusiform or 

 conical, without a seta at the end, and almost always terminated by 

 a biarticulated stilet. The scutellum, in most of them, is armed with 

 two spines or teeth. 



Here the proboscis is very short. The anterior portion of the head 

 does not project in the manner of a rostrum, receiving that organ 



* See Lat, Fab., Meig., and Macq. 



t See the same authors. 



X Wied., Anal. Entom., 13, fig. 4. 



The genus Platyna of this naturalist, established and figured in the same work, is 

 wholly unknown to me. The Insect, on which he has formed it, has the port of a 

 Beris and a Cyphomyia. The antennae are equally long and filiform, with the two 

 first joints elongated and cylindriceil, and the last, judging from his figure of one of 

 those organs, without rings. The scutellum has but one spine. 



§ Strutioiinja quadrUJenfuta, Fab. 



