196 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



Paratypes are deposited in the collections of the American Museum 

 of Natural History, United States National Museum, American En- 

 tomological Society of Philadelphia ; Cornell University, University 

 of Michigan, University of Minnesota, Mississippi Agricultural Col- 

 lege, North Carolina Agricultural College, Iowa State College, Bu- 

 reau of Plant Industry, Pennsylvania Department of Agriculture; 

 Canadian Department of Agriculture, O. A. Stevens, and the author. 



The paratypes vary in color to some extent ; in northern and west- 

 ern specimens the thorax is entirely black, and in some specimens the 

 first abdominal segment is partly or entirely black. The hairs in the 

 pit on the second abdominal sternite are often black. The specimens 

 vary in length from 9 mm. to 14 mm. 



This species is very closely related to pemiiista Mickel. It has been 

 placed under the name castor in collections. It differs from permista 

 in having the second tergite less coarsely punctate, the lateral margins 

 of the second tergite glabrous, impunctate and bare, rather than 

 microscopically punctate and finely pubescent, and in having the 

 second abdominal segment entirely ferruginous rather than mostly 

 black. It is probably the male of either allardi or cyprh. 



72. DASYMUTILLA HORA, new species 



Plate 2, fig. 15 



Male. — Black, except first and second abdominal segments fer- 

 ruginous; anterior margin of pronotum distinctly emarginate; sec- 

 ond sternite with an elongate, ovate pit densely filled with hairs, on 

 the anterior third. Length, 13 mm. 



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

 mandibles tridentate at the apex; clypeus bidentate medially on the 

 anterior margin, the disk moderately, confluently punctate; scape 

 bicarinate beneath, coarsely, closely punctate; first segment of the 

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

 nate above; front coarsely, confluently punctate; vertex with mod- 

 erate, contiguous, shallow punctures ; genae with small, mostly sepa- 

 rated, shallow punctures; occiput with moderate lateral depressions 

 leaving a broad, median elevated area, punctured like the vertex: 

 relative widths of head and thorax, 7-8.5. 



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

 anterior margin of the pronotum slightly emarginate medially, the 

 cephalic surface of the emargination glabrous, impunctate ; pronotum, 

 mesonotum, scutellum and metanotum with contiguous, more or less 

 confluent punctures; propleura with large, confluent punctures 

 anteriorly, scattered punctures near the posterior margin; mesopleura 

 with large, deep, contiguous punctures throughout, the punctures on 



