AMERICAN MUTILLID^. 253 



dorsal not completely covering the segment, leaving a black space 

 laterally and posteriorly; segments 2-5 fringed with white pubescence 

 at apex ceres n. sp. 



5. Insect rather densely clothed with a fine, silky, pale pubescence, especially the 



head and apical segments, that on head and thorax above short, dense 

 and appressed, elsewhere long and paler, on abdomen from apex of 

 segment 2 dense and whiter; second dorsal covered with strong punc- 

 tures, not coarse as in other species; pygidium finely rugose longitu- 

 dinally ; form rather broad, the thorax subquadrate-lialcy«nie n. sp. 

 Insect less densely pubescent, in some species fairly well clothed, however; 

 second dorsal with very strong punctures, or rugose; pygidium at 

 most finely granulated 6. 



6. Second dorsal segment punctured throughout 8. 



Second dorsal segment coarsely rugose toward the base (insect reddish) 7. 



7. Thorax pyriform. rugosely punctured above; second dorsal basally with strong, 



longitudinal rugse or folds loadmnisi n. sp. 



Thorax short, subquadrate, coarsely rugose above : second dorsal basally 

 coarsely sculptured, covered with rough tubercles or projections, 

 apical ly rugoso-punctate «lirce n. sp. 



8. Head entirely and thorax more or less covered with a close, appressed pubes- 



cence, the entire body clothed with an erect, whitish pubescence, es 



pecially dense on abdomen, basally and apically and sides of thorax ... 9. 



Head and thorax bare or sparsely pubescent 10. 



9. Body pale ferruginous, legs pale ; dorsals 3 and 4 with a patch of black-brown 



pubescence, strongly contrasting with the pale pubescence, with which 



it is surrounded (lioineda n. sp. 



Body dark ferruginous, including legs; apical dorsal segment with si)arse, 

 pale pubescence erato Blake. 



10. Second dorsal with elongate, more or less confluent punctures 11. 



Second dorsal with separated punctures (thorax rugose above, truncate 



behind) iiailllla D. T. 



11. Head with strong, distinct punctures; thorax rugoso-punctate; legs black- 



ish albopilosa Blake. 



Head finely rugose; thorax above rugose; legs red; eyes unusually convex_ 



niyrrha n. sp. 



The six following species have the first segment strongly nodose, 

 much as in the occidentalis group : 



96. Miitilla iinperialiiii Blake. 



Agama imperialis Blake, Tr. Am. Ent. Soc, iii, 260, %, , 1871. 

 Photopsis imperialis Blake, ibid, xiii, 265, % , 1886. 



Texas. 



97. Miitilla Edwardsii Cress. 



Mutilla Edumrdsii Cresson, Tr. Am. Ent. Soc, v, 119, % , 1875. 

 Sphserophthalnid Edwardsii Blake, ibid, xiii, 208, % , 1886. 



Oregon ; Washington ; California. 



Imperialis and Edwardsii have the appearance of tlie males of 



TRANS. AM. ENT. SOC. XXV. FEBKUARY. 1899. 



