OF NATURAL HISTORY. ' 751 



BEMBEX Fabr. Latr. 



1. B. LONGIROSTRA.— Rostrum extending beyond the inser- 

 tion of the intermediate feet ; superior wings with the marginal 

 and last submarginal cells divided by a very distinct space. 



Inhabits Mexico. 



Body black, with short, dense, white hair : antennse tinged 

 with piceous; first joint white beneath: anterior orbits dull 

 white : nasus whitish, with two black spots : tergum white, with 

 a bilobate, black spot at base : rostrum honey-yellow; extendino- 

 nearly to the origin of the posterior feet : collar, anterior and 

 posterior margins white : [367] thorax with a very small ful- 

 vous, abbreviated line each side of the middle, and a small, 

 double, fulvous spot behind the middle : scutel with a white 

 lateral spot : metathorax with a white line at base and an oblique 

 one each side towards the tip : tergum varied with yellow and 

 black or green and black ; the posterior margins of the segments 

 dull rufous ; about four distinct black spots : feet honey-yellow : 

 thighs black beneath : tarsi paler : venter honey-yellow, with a 

 black spot before the anterior spine. 



Length from seven-tenths to four-fifths of an inch. 



With the short maxillary palpi and the one-toothed mandible 

 of Bemhcx, this insect has the radial and last cubital cellules as 

 widely separated at their tips as in MoneduJa. The proboscis is 

 not folded, but extended horizontally beneath the body. These 

 characters may justify the formation of a distinct genus, or at 

 least of a division, under the name of StenioUa. 



2. B. FASCIATA Fabr. — A male in my cabinet has six bands 

 upon the tergum and two spots on the ultimate segment : the 

 first band is double the width of that of the female, and is inter- 

 rupted by a very small space only ; second band not interrupted, 

 but its two lunules are so continued as to inclose two black spots ; 

 third baud with the lunules not or hardly interrupted ; fourth 

 and fifth bands interrupted ; sixth band entire, undulated : spots 

 on the ultimate segment, orbicular; the female has but five 

 bands. 



1835.] 



