390 HYMENOPTERA. 



31. OXYBELUS CORDATUS. 



Oxybelus cordatus, Spin. Gay's Chili, vi. 364. 1. 

 Hab. Chili. 



32. OXYBELUS MARGINELLUS. 



Oxybelus marginellus, Spin. Gay's Chili, vi. 365. 2. 

 Hab. Chili. 



33. OXYBELUS IMPATIENS. B.M. 



Female. Length 3 lines. Black : the flagellum fulvous be- 

 neath ; the face has a silvery pubescence, on the vertex and disk 

 of the thorax it is yellow, short, and sparing ; a minute spot on 

 the tubercles, another on the tegulse, and a minute spot at the 

 base of the intermediate and posterior tibiae, yellow ; the anterior 

 tibiae yellowish-white in front, the claw-joint of the tarsi fulvous ; 

 the squama pale testaceous, the mucro linear, grooved above and 

 rounded at the apex. Abdomen : each segment has a narrow 

 pale yellow line on each side, the apical segment immaculate. 



Hab. California. 



34. OXYBELUS L.ETUS. 



Oxybelus laetus, Say, Bost. Journ. i. 375. 3. 

 Hab. North America (Indiana). 



35. OXYBELUS EMARGINATUS. B.M. 

 Oxybelus emarginatus, Say, Bost. Journ. i. 375. 1. 



Hab. North America (Indiana). 



36. OXYBELUS 4-NOTATUS. 



Oxybelus 4 -notatus, Say, Narr. Exped. St. Peter's River, Append. 



p. 71 ; Bost. Journ. i. 375. 2. 

 Hab. Pennsylvania. 



Genus 4. CRABRO. 



Sphex, pt., Linn. Faun. Suec. 411 (1761). 

 Vespa, pt., Linn. Faun. Suec. 415 (1761). 

 Crabro, pt., Fabr. Ent. Syst. ii. 293 (1793). 

 Pemphredon, pt., Fabr. Syst. Piez. 314 (1804). 

 Rhopalum, Kirby, Steph. Syst. Cat. 366 (1829). 



