270 HYMEN OPTEKA. 



b. Head Hack. (Species 11-19.) 



f Legs reddish. (Species 11-16.) 



* Abdomen for the greater part ferruginous. (Species 11 and 12.) 



1 11. Mutilla impudica. (Tab. XIII. fig. 11, $ .) 



Perruginea ; capite nigro ; antennis nigris, scapo rufo ; abdomine argenteo- et nigro-maculato. $ . 

 Long. 7 millim. 



Hah. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 



Head wider than the thorax, coarsely punctured, covered with long blackish hair ; 

 the oral region with the hair silvery and shorter ; the base of the mandibles ferru- 

 ginous. The eyes large, reaching to the top of the head, which is moderately developed 

 behind them and not much narrowed. The scape of the antennae sparsely covered 

 with silvery hair; the flagellum more or less fuscous beneath; the third joint nearly 

 twice the length of the fourth. The thorax very coarsely punctured above, and covered 

 with moderately long black hair, the sides slightly concave; the median segment 

 broadly rounded at the top and with a rather abrupt slope ; the mesopleurae smooth 

 and impunctate. The abdomen a little wider than the thorax, above bearing long 

 black hair. The basal segment is gradually dilated to the apex and confluent with the 

 second; it is covered with long pale hair, and at the apex has a band of white 

 pubescence. The second segment is punctured rather strongly, especially towards the 

 sides ; near the base are two golden lines, which reach to the middle but do not touch 

 the base ; at the apex is a belt of golden pubescence. The third, fourth, and fifth 

 segments are shagreened, blackish in the middle, at the sides with a mark of golden 

 pubescence, that on the fifth united to the opposite one at the apex. The pygidium is 

 punctured and fringed laterally with long fulvous hair. The second ventral segment 

 is rather strongly punctured ; the others much more finely punctured at the apex, 

 where there is a sparse belt of long fuscous hair. Legs with the femora and tarsi 

 sparsely covered with white hair, the hair on the metatarsi thicker, the other tarsal 

 joints covered with silvery pubescence and blackish at the tips. The tibial spines are 

 long and thick. 



This species bears a general resemblance to M. cyra, but it is smaller, has the head 

 entirely black, and the eyes are placed much higher up on the head. From the 

 species of this group with reddish legs it may easily be known by the ferruginous 

 abdomen with golden markings. 



M. subrobusta may be known from M. impudica by the head having a thick brassy 

 pubescence, the thorax stouter and hardly convex along the sides, the apex of the 

 median segment more rounded and not so sharply oblique, and the abdomen shorter 

 compared to the length of the thorax, its apex being densely covered with reddish hair ; 

 is also a smaller insect. 



