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PLATE ,:;CCCCXL, 
SIREX BIMACULATUS. 
BIMACULATED SAW-FLY. 
HYMENOPTERA. 
GENERIC CHARACTER. 
Mouth with a thick, horny, truncated, fhort, denticulated man- 
dible: feelers four, the pofterior part longer and thicker upwards : 
antenn filiform, of more than twenty-four equal articulations: fting 
exferted, ferrated, and ftiff: abdomen feffile, terminatmg in a point : 
wings lanceolate and incumbent, the lower ones fhorter. 
“SPECIFIC CHARACTER. 
SiREx BiMAcULATUS. Abdomen yellow: a black {pot on the firft 
and three pofterior rings: thorax fubfufcous, with 
two black fpots. a 
———_—__—_—— 
‘his is a curious fpecies, and differs apparently from any of the Si- 
rex genus at prefent defcribed. The head and thorax is fufcous, the 
latter marked in the middle with two blackifh oblong fpots. The 
body is orange with black fpots, and the legs orange having the pofterior 
pair marked at the lower end of each principal joint with black. The 
legs are compreffled. Wings reddifh-brown. The figure in the plate 
is of the natural fize. 
PLATE 
