INVESTIGATIONS ON THE MUTILLID WASPS 



67 



Head black ; mandibles acute at the apex, unidentate within about 

 a third of their length from the tips ; clypeus bidentate medially at 

 the apical margin, the clypeal fringe composed of long, coarse, black 

 hairs ; first segment of flagellum twice as long as broad at the apex, 

 apparently a little shorter than the second and third segments united ; 

 antennal scrobes distinctly carinate above; front and vertex with 

 deep, coarse, confluent punctures, clothed with long, erect, and 

 recumbent ochraceous pubescence; genae with large, more or less 

 confluent punctures, not as coarsely sculptured as the front and ver- 

 tex, rounded posteriorly, clothed with sparse, erect black pubescence ; 

 relative widths of head and thorax, 8.5-10.5. 



Fig. 3. — Distribotion of Dasymdtilla folvohirta (Cresson) 



Thorax black; dorsum with large, coarse, deep, more or less con- 

 fluent punctures, clothed with long, erect, and recumbent, ochraceous 

 pubescence, extending onto the posterior face of the propodeum; 

 propleura with large, coarse, deep punctures, the carina defining the 

 cephalic margin prominent, sparsely clothed with erect, black pubes- 

 cence; anterior half of mesopleura with fine punctures near the 

 cephalic margin and large scattered punctures posteriorly, the pos- 

 terior half of the mesopleura with coarse, deep, confluent punctures, 

 clothed with sparse, erect, black pubescence; metapleura glabrous 

 with a few, large, shallow punctures ventrally, very sparsely clothed 

 with long, black pubescence ; sides of propodeum with large, more or 

 less confluent punctures anteriorly, becoming foveately reticulate, 

 posteriorly, very sparsely clothed with long, black pubescence; pos- 

 terior face of propodeum coarsely, foveately reticulate at Ine sides 



