HYMENOPTERA. 335 



^H tlie metathorax, 5'ellow ; legs yellow, with a black spot on the 

 trochanters and femora beneath ; also a black stripe at the base 

 of the femora above; wings subhyaline, the nervures ferrugi- 

 nous. Abdomen yellow, the margins of the segments ferrugi- 

 nous ; the first segment has the base and a central pointed spot 

 uniting with it, black, an oblique line on each side black ; the 

 second segment has a central saddle-shaped spot, and the fol- 

 lowing segments two central black dots ; the apical segment has 

 in addition a central elongate- acute angular spot. 



The male closely resembles the female, but the spots on the 

 abdomen are seldom united; the abdomen is yellow beneath, 

 the second segment having a central longitudinal black stripe, 

 and also a central minute acute tooth at its apical margin. 



Hab. Mexico. 



This is a species which varies in the markings of the abdomen ; 

 the black spots sometimes unite with the black basal margin of 

 the segments ; in some examples they are all separated, par- 

 ticularly in specimens of the males. 



15. MoNEDULA Carolina. B.M. 



Bembex Carolina, Fabr. Ent. Syst. ii. 249. /; Syst. Piez. 224. 11, 

 Coqueb. lllustr. Icon. Ins. dec. 1. t. 6. f. 2 $ . 



Monedula Carolina, Latr. Gen. Crust, et Ins. iv. 100. 

 St. Farg. Hym. iii. 281. 1. t. 28. f. 4. 

 Dahlb. Hym. Europ. i. 185. 2. 



Hab. North America ; East Florida; Carolina. 



16. Monedula 4-fasciata. B.M. 



Monedula 4-fasciata, Say, Narr. Exped. St. Peter's River, Ap- 

 pend. 70. 1. 

 Monedula Sallei, Guer. Icon. Reg. Anirn. iii. 437? 



Hab. Pennsylvania; N. Carolina. 



17. Monedula ventralis. 



Monedula ventralis, Say, Narr. Exped. St. Peter's River, Append. 

 70.2. 



Hab. Pennsylvania. 



18. Monedula pictifrons. B.M. 



Female. Length 6 lines. — Head black ; the clypeus, face on 

 each side, a triangular sjjot enclosing the anterior stemma, a 

 central hue uniting with it and running to the base of the cly- 



a 5 



