212 MTTTILLIDJ3. 



Mutilla crux resembles this species ; but that insect has the scape 

 of the antennae and legs ferruginous, and the thorax is elongate, 

 black, and with a central line of golden pubescence. 



67. Mutilla auromaculata. 



Female. Length 6 lines. — Black ; two pale golden pubescent spots 

 on the vertex, extending from the eyes to the posterior margin of 

 the vertex ; four spots on the thorax and two on the basal seg- 

 ment of the abdomen. The head as wide as the thorax ; the 

 mandibles ferruginous in the middle. Thorax rugose, a little wider 

 in the middle than at the anterior margin, with a short, recurved, 

 lateral tooth at the widest part ; there is also a second small tooth 

 halfway towards the anterior margin, behind the widest part it is 

 obliquely and suddenly narrowed ; above there is an oblique golden 

 spot on each side at the widest part ; the metathorax subparallel, 

 with a golden stripe on each side. The second segment of the 

 abdomen with ovate, glabrous, testaceous spots at about the middle 

 of the segments ; the third, fourth, and fifth segments with a lateral 

 longitudinal line of pale golden pubescence. 



Hah. Venezuela. 



This species is closely allied to M. spinosa, but, independent of its 

 smaller size, its vertex is more quadrate, and the glabrous spots on 

 the abdomen are proportionately smaller. I think it must be more 

 than a local variety. 



68. Mutilla pertinax. 



Female. Length 5^-6 lines. — Black ; a longitudinal macula on the 

 disk of the thorax, an ovate one on the basal segment of the abdo- 

 men, and also one on the second segment of ferruginous pubes- 

 cence. Head very large, wider than the thorax, and rugose- 

 punctate. Thorax oblong, narrowed posteriorly ; the metathorax 

 truncate, rugose-punctate. Abdomen shining, rather finely punc- 

 tured, and having a thin black pubescence. 



Hah. Mendoza. 



Div. II. The thorax hlacTc. (Sp. 69-80.) 



69. Mutilla mansueta. 



Female. Length 3 lines. — Black, finely rugose, covered with short 

 black pubescence, and sprinkled with erect long black hairs. The 

 head with a short thin hoary pile. The thorax as wide as the head, 

 narrowed behind, and with a little hoary pile near the apex. The 



