AMERICAN MUTILLID.E. 225 



Texas: Houston (Wickham). Only the unique type seen. This 

 species differs from the others in this group by the well-developed 

 scutellar scale. 



The following three species are known in the male sex only : 



11. .Iliitilla s;eryoii n. sp. 



%. — Black throughout, clothed with pale, erect pubescence, except on head 

 above, where it is black ; abdominal segments 2-5 thinly fringed with pale hairs at 

 apex; head with strong, confluent punctures, rounded behind, the postero-lateral 

 angles not evident ; space between hind ocelli equal to about half that between 

 them and eyes, the latter somewhat reniform ; anteunse about as long as the 

 head and that portion of thorax anterior to middle segment; thorax strongly 

 punctured, but not as closely as head ; first abdominal segment sessile with sec- 

 ond, with strong, separated punctures; second doi'sal with the punctures more 

 separated, those of second ventral somewhat stronger; apical segments with finer, 

 though distinct punctures; wings fusco-hyaline, nervures and stigma blackish, 

 the recurrent vein received by second submarginal cell near middle. Length 

 7 mm. 



Missouri : St. Louis, August 28th. One specimen. 



12. Miitilla gila Blake. 



Miitilla { Sphserophfhalma) gila Blake, Tr. Am. Ent. Soc, iii, 250, % , 1871. 

 ^phxrophthalma gila Blake, ibid, xiii, 245, % , 1886. 



Texas. Only the unique type seen. 



13. Miitilla atliaina!^ n. sp. 



% . — Black, shining, clothed with thin pale hairs; legs not as dark as body, 

 more brownish, comparatively slender; liead transverse, with strong, widely 

 separated punctures, postero-lateral angles obtuse, space between hind ocelli 

 equal to less than half that between them and eyes; antennae about as long as 

 head and thorax united ; the first joint of flagellum distinctly shorter than sec- 

 ond : thorax with strong, separate punctures, those on mesoplem'se closest; mid- 

 dle segment reticulated, the reticulation largest above ; first abdominal segment 

 with large sparse punctures, not very broad, sessile with second, the latter with 

 the punctures large, but somewhat closer; wings subhyaline. nervures and 

 stigma testaceous brown, the recurrent vein received by second submarginal cell 

 at base. Length 5 mm. 



California: Povvay. One specimen. 



3. Group simillima. 

 This group agrees with both the preceding in the first and second 

 abdominal segments being sessile, but differs by the female po.ssessing 

 a distinct pygidial area, which is either striated or punctured, and by 

 the large rounded eyes of male ; this sex also differs by possessing 

 a third submarginal cell, which, while less distinct than the other 

 cells, yet is easily discernible. Both sexes have a rather robust 



TRANS. AM. ENT. SOC. XXV. (29) JANUARY, 1899. 



