INVESTIGATIONS ON THE MUTILLID WASPS 199 



of this species and the specimens placed here are identical with it. 

 The lectotype is from Texas according to the locality label, but I 

 have some doubts as to whether the locality label is correct, since all 

 the specimens I have seen are from Georgia. This species has been 

 misidentified in all collections. The lectotype has remained a unique 

 up to the present time and all printed records of castor are erroneous. 

 This species is closely related to pei^nista. rubricosa, and meracula. 

 It differs from all three in having the pit on the second sternite basal 

 in position. It may be separated from permUta and meracula by 

 the ferruginous first and second abdominal segments. The emar- 

 ginate anterior margin of the pronotum and the lateral depressions 

 of the occiput distinguish it from permlsta and imbHcosa. The 

 absence of an apical fringe of hairs on the pygidium separates it at 

 once from hora which it resembles superficially. The genitalia are 

 distinct from those of any of the above species, 



74. DASYMUTILLA GENTILIS, new species 



Plate 2, fig. 14 



Male. — Entirely black, except apical two-thirds of second ab- 

 dominal tergite ferruginous; occiput with broad, deep, lateral de- 

 pressions, leaving a median elevated area; anterior margin of 

 pronotum emarginate medially, forming a small, median tubercle; 

 cephalic surface of the emargination glabrous; posterior declivity 

 of tegulae setigerously punctate. Length, 13 mm. 



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

 mandibles tridentate at the apex ; clypeus strongly bidentate medially 

 on the cephalic margin, the disk coarsely rugoso-punctate ; scape 

 bicarinate beneath, coarsely and closely punctate; first segment of 

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

 tinctly carinate above; front very coarsely, confluently punctate; 

 vertex and genae with coarse, contiguous punctures; occiput broadly, 

 deeply depressed laterally, forming a median area conspicuously 

 elevated ; the latter with close, elongate punctures ; relative widths of 

 head and thorax, 7.5-9.5. 



Thorax black, sparsely clothed throughout with long, erect, black 

 pubescence ; pronotum distinctly emarginate medially on the anterior 

 margin, forming a conspicuous, glabrous, triangular area on the 

 cephalic face of the pronotum, the uppermost angle of the triangle 

 forming a small, median tubercle; dorsum of pronotum rounded 

 into the cephalic face of same except medially; pronotum, meso- 

 notum, scutellum, and metanotum with very coarse, deep and con- 

 fluent punctures; propleura with coarse punctures anteriorly, and 

 intermixed coarse ancl fine punctures posteriorly; mesopleura with 



55287—28 14 



