I 



INVESTIGATIONS ON THE MtTTILLID WASPS 201 



the two other species. It differs from castor in having the pronotum 

 more strongly emarginate medially on the cephalic margin, the punc- 

 tate tegulae, and in having the pit on the second sternite much less 

 developed. 



75. DASYMUTILLA MERACULA, new sp«cies 



Plate 3, fig. 19 



Male. — Black, except second abdominal tergite mostly ferruginous ; 

 occiput with moderate lateral depressions ; anterior margin of prono- 

 tum emarginate medially, the cephalic surface of the emargination 

 glabrous ; dorsum of pronotum not evenly rounding into the cephalic 

 surface medially; posterior surface of tegulae impunctate. Length, 

 15 mm. 



Head black, sparsely clothed with long, erect, black pubescence; 

 mandibles tridentate at the apex; clypeus bidentate medially on the 

 cephalic margin, the disk closely and confluently punctate; scape 

 bicarinate beneath, coarsely and confluently punctate; first segment 

 of the flagellum four-fifths the length of the second ; antennal scrobes 

 carinate above; front coarsely, deeply, and confluently punctate; 

 vertex and genae with moderate contiguous punctures; occiput with 

 moderate lateral depressions, leaving a broad median elevated area, 

 punctured like the vertex ; relative widths of head and thorax, 7.5-9. 



Thorax black, sparsely clothed with long, erect, black pubescence; 

 anterior margin of pronotum emarginate medially, not forming a 

 tubercle as in gentiUs, the cephalic surface of the emargination 

 glabrous ; pronotum, mesonotum, scutellimi, and metanotum coarsely, 

 deeply, and confluently punctate; propleura with coarse, close punc- 

 tures anteriorly, moderate, scattered punctures posteriorly, inter- 

 spersed with very fine punctures ; mesopleura with very large, coarse, 

 more or less confluent punctures, interspersed anteriorly with very 

 fine punctures; ventral third of nietapleura with close, coarse punc- 

 tures, dorsal two-thirds glabrous, impunctate; anterior portion of 

 sides of propodeum with large, contiguous punctures, posteriorly 

 coarsel}', confluently foveolate; posterior face and dorsum of pro- 

 podeum coarsely, deeply, irregularly foveolate; anterior third and 

 inner lateral third, coarsely, closely punctate, remaining surface 

 glabrous, impunctate. 



Abdomen black, the second tergite ferruginous except narrow basal 

 and apical margins; first tergite distinctly constricted subapically, 

 with coarse, more or less confluent punctures throughout; second 

 tergite with moderate, deep, slightly elongate, contiguous punctures 

 on the anterior third, similar but separated punctures on the posterior 

 two-thirds, clothed with sparse, long, erect pubescence and a thick, 

 apical fringe of black hairs, the pubescence black on the black portion 



