closely approximated at base. Their proboscis projects but very 

 little beyond the oral cavity, as in 



Stygiues, Lat. — Stygia, j\Ieig.* 



In the others the -antennae are distant. 



Here, the head is almost globular; tlie proboscis is never long; 

 the palpi are always concealed, and the extremity of the wings docs 

 not exhibit numerous areolae forming a net- work. 



Anthrax, Meig., 

 Or Anthrax, properly so called, where the three ocelli are closely 

 approximated. 



A. morio; Mmca morio; Panz., Favm. Ins. Germ,, xxxiii, 18; 

 A. ^einiatra, Meig. Entirely black, with russet hairs on the tho- 

 rax and sides of the abdomen. The wings, from their base to 

 a little beyond the half of their length, are black, which colour, 

 in terminating, forms four almost equal dentations. It is one 

 of the mo.st cummon species in the environs uf Paris f. 



HiRMONEURA, J Vied., Mei(j., 

 Where one of the three ocelli, the anterior, is distant from the two 

 others, which arc posterior ; the i)roboscis is concealed. The wings 

 exhibits more nervures than those of the preceding subgenus %. 



There, the head is proportionally shorter, almost hemispherical, 

 and compressed transversely ; the antcnn;? are very distant ; the 

 trunk is lunger than the head ; the palpi are sometimes exterior, and 

 the extremity of the wings frequently exhi'iits a reticulation analo- 

 gous to that of the same organs in tlie Neuroutera. 



Those, in which they are always reticulated in the usual manner, 

 where tlie proboscis is merely a little longer than the head, and the 

 palpi are not apparent, where the first joint of the antennae is cylin- 

 drical, somewhat longer than the preceding one, and the last forms 

 an elongated cone, compose the subgenus 



MuLio, Lat , Mei(j. — Cythkrka, B'ab. § 

 Those in which the sumu it of the wings is most frequently reti- 

 culated, like those of the Neuroptera. and the pioboscis is much lon- 

 ger than the head, with the palpi external, in whicn the two first 

 joints of the antenna; are very short, nearly equal in size, almost 

 granose, and the last forming a very short cone, with an abrupt and 

 almost setaceous stilet at the extremity, constitute the subgenus 



Nemestrina, Lat. Oliv. Wied., 

 AV^here the tarsi are furnished with three pellets, whilst in the preced- 

 ing subgenera there are only two, and frequently but slightly ap- 

 parent II . 



* See Meigea and Macquart. The name of Sli/r/ia had already been appropriated 

 to a genus of the Lepidoptera. 



t This subgenus is designated in the Encyc. Method., X, 676, by the name of 

 Lumatia. 



J ."ee Meigen. 



§ Lat. Meig., Fab., Wied. 



II The Hermoneurse should be excepted, according to a figure of one of the tarsi 

 given by Meigen. 



