248 WILLIAM J. POX. 



86. Iliitilla californica Had. 



Mutilla californica Radoszkowski, Hor. Soc. Ent. Ross, i, 86, T. ii, f. 7, 9 , 1861. 

 Sphxrophthalma californica Blake, Tr. Am. Ent. Soc, xiii, 219, 9, 1886. 



Kansas ; Texas ; Colorado ; Dakota ; Wyoming ; New Mexico ; 

 Arizona; California; Hudson Bay Territory. Specimens are sub- 

 ject to some variation as to size and color of pubescence. Two from 

 Arizona and Wyoming differ only in having pubescence closer, 

 appressed and not rough and shaggy as in most specimens. 



Tlie following two species have the head very large, wider than 

 thorax ; the latter is shorter and more truly hexagonal than in 

 californica, etc., and on the whole the form is broader; pygidium 

 rugose or coriaceous. 



87. Mutilla paeifica Cress. 



Mutilla pacifica Cresson, Tr. Am. Ent. Soc, v, 120, 9 , 1875. 

 Sphwroi)hthal.ma pacifica Blake, ihid, xiii, 217, 9 . 1886. 



Colorado and California ; Lower California. Varies considerably 

 in size. 



88. Mutilla aureola Cress. 



Mutilla aureola Cresson, Proc Ent. Soc. Phila., iv, 386, 9 , 1865. 

 f^phserophthalma parmosa Blake, Tr. Am. Soc. xiii, 210, 9 i 1886. 

 Sphxrophthalma aureola Blake, ibid, 215, 9 • 1886. 

 Sphserophthalma mollissima Blake, ibid, 215, % 9; 1886. 



Nevada ; California. Blake's types of mollissima were said to 

 have come from Colorado ; at present they bear no locality label, 

 and I am inclined to doubt if they came from Colorado. The color 

 of the pubescence varies from pale yellow to a ochraceous. 



M. gorgon has the pygidium longitudinally striated, otherwise 

 closely agreeing with pacifica and aureola. 



89. Mutilla gorgoii Blake. 



Mutilla (Sphierophthalmn } gorgon Blake, Tr. Am. Ent. Soc, iii, 233, 9 • 1871. 

 Mutilla tisiphone Blake, ibid, vii, 249, 9. 1879. 

 Sphserophthalma gorgon Blake, ibid, xiii, 210. 9 > 1886. 

 Sphaerophthalma tisiphone Blake, ibid. 



Texas: Dallas (Boll); Arizona; New Mexico: Me.silla, June 

 11th (Cockerell): Albuquerque in August (Snow). Blake's tisi- 

 phone is apparently a rubbed specimen with paler pubescence. 

 Specimens vary from 11-17 mm. in size. One Texan example, a 

 female, has the reddish hairs covering the upper part of head and 

 thorax as well as abdomen. The S may be described as follows: 



