460. 

 ORYSSUS CORONATUS. 



Order Hymenoptera. Fam. Siricidae Curt.^ Uroceridae Lat. 



Type of the Genus, Oryssus coronatus Fab. 

 Obyssus Lat., Fab., Jur., Leach, Curt. — Sphex ScopoU. — SirexPawz. 

 AntenncE inserted beneath the clypeus, at the base of the man- 

 dibles, shorter than the head and thorax, curved, compressed and 

 1 1 -jointed in the males, " 2nd and 3rd joints obconic, the former 

 very short, the latter longer than the following, the 4th and re- 

 mainder nearly equal in length, terminal joint with the apex 

 acuminated." Lat. — 10-jointed in the female, and slightly in- 

 creasing in breadth to the apical joint ; basal the stoutest, sub- 

 globose, 2nd small ovate, 3rd much longer spatulate, 4th and 

 5th short, subquadrate, 6th the longest, 7th and 8th shorter, 

 9th longer than the 8th, somewhat sabre-shaped, 10th small 

 and slender, pubescent and truncated (1 $). 

 Labriim. exserted, coriaceous, small suborbicular, flat, ciliated 

 before with soft hairs. Lat. — Lobe membranous, subovate, the 

 apex elongated, strap-shaped (2). 



Mandibles somewhat wedge-shaped, rounded at the apex and 

 .pubescent, clothed externally with longer hairs (3). 

 Maxillce terminated by a horny curved process, pilose externally, 

 with a large suborbicular membranous lobe on the inside. Palpi 

 long, pubescent and 5-jointed, basal joint long, subclavate, 2nd 

 short obconic, 3rd longer and stouter than the 1st, 4th the longest 

 linear, 5th the slenderest and as long as the 1st (4). 

 Menttim small, cylindric, slightly narrowed at the middle. Lip 

 as large as the mentum, compressed, subconic and slightly con- 

 cave above. Palpi much smaller than the maxillary, rough with 

 short hairs, triarticulate, basal joint clavate, 2nd minute, 3rd a 

 little longer and broader than the 1st, truncated obliquely (5). 

 Head orbicular, with a crown of tubercles on the top : eyes ovate, more 

 remote before than behiAd : ocelli 3 in triangle. Thorax not larger 

 than the head. Abdomen sessile, subcylindric, slightly clavate and 

 conical at the apex . Ovipositor concealed in a groove beneath. Wings 

 rather sho7't, superior with one long marginal, and 3 imperfect siib- 

 marginal cells, the 1st and 2nd being united, the Zrd very long. Legs 

 rather small : thighs sho7-t. Tibiae all furnished with 2 spurs at the 

 apex in the male, and the tarsi more elongated and 5-jointed. Tibiae 

 of the female, anterior very short and attenuated at the base, tvith a 

 notched spine on the inside of the apex, and an oblique suture above 

 the middle, appearing like a joint ; the others angulated and acute at 

 the apex on the outside, the posterior slightly serrated. Tarsi tri- 

 articulate in the fore feet, basal joint long and rounded, 2nd the 

 shortest, inserted on the side before the apex of the 1st, pear-shaped 

 but truncated obliquely, Srd longer and clavate, the others 5-jointed 

 and spined beneath at the apex, basal joint long, 4th minute. Claws 

 and pulvilli small (8, fore leg of female). 



Coronatus Fai., Curt. Guide, Gen. 480. 1. — Vespertilio A7«^., Panz. 

 In the Cabinet of the British Museum. 



