6.0 BI7LLETIX S26, U. S. DEPAKTALEXT OE AGRIC1TLTURE. 
media ; hind wings with, both media and cubitus present. Cornicles somewhat swollen 
near their distal extremities. Cauda elongate and constricted near the base. 
Type (monotypical), Macrosiphum hirhaldyi Fullaway. 
Genus LDIOPTERTJS Davis. 
Plate VIII, EE-HH. 
1900. Idiopterus Davis, Ann. Ent. Soc. Amer., v. 2, p. 19S. 
Idiopterus, a less specialized genus than Pentalonia, is worthy of 
special note, as it gives a key to the peculiar venation of the latter genus. 
The coalescing of the radial sector and the media is here plainly 
visible and in some specimens a triangular closed cell is formed, 
although in most examples the two veins can be traced distinctly. 
Characters. — Head with prominent antennal tubercles which project slightly in- 
wards, and are gibbous. Antennae of six segments, armed with subcircular sensoria, 
the first segment gibbous like the antennal tubercles. Cornicles subcylindric, rather 
slender, cauda somewhat elongate, conical. Fore wings with the radial sector extend- 
ing abruptly downward from the stigma and paralleling the upper branch of the 
media with which in some specimens it appears to be almost united ; hind wings with, 
both media and cubitus present. 
Type (monotypical), Idiopterus nephrolepidis Davis. 
Genus MICROPARSUS Patch. 
Plate VIII, AA-DD. 
1909. Microparsus Patch, Ent. News, v. 20, p. 337. 
Microparsus is at once distinguished from the other genera related 
to it by the peculiar venation and the reduction of the hind wing. 
Characters. — Head with distinct antennal tubercles present. Antenna? of six seg- 
ments, armed with subcircular sensoria. Fore wings with the media once branched; 
hind wings much reduced in size and lacking both the media and cubitus. Cornicles 
subcylindric. Cauda rather long and'tapering, almost equal in length to the cornicles. 
Type (monotypical), Microparsus variabilis Patch. 
Genus NEOTOXOPTERA Theobald.* 
1915. Neotoxoptera Theobald, Bui. Ent. Res., v. 6, p. 131. 
This genus is closely related to Fullawayella, from which it can be 
separated by the venation. There has been some doubt whether or 
not this is a good genus, for the name will not hold if the type is found 
to correspond with Pergande's violae, which it resembles. In that 
ease Neotoxoptera would become a synonym of Fullawayella, for 
Pergande's species is undoubtedly a Fullawayella. 
Characters. — Head with prominent antennal tubercles. Antennae of six segments, 
armed with subcircular sensoria. Fore wings with the media once branched. Corni- 
cles swollen, elongate, somewhat conical. 
Type (monotypical , Xeotoxoptera violae Theo. 
i Alter this paper was in type the Avriter (Bui. Ent. Res., v. 10, p. 45) showed that violae Theo. is a 
synonym of violae Perg. 
