238 WILLIAM J. FOX. 



Florida ; Texas ; Colorado ; Kansas. I am inclined to regard 

 this as a variety or western race of occidentalis 



36. Ulutilla orcuM Cress. 



Mutilla orcus Cressou, Proc. Ent. Soc. Phila., iv, 428, 9 % , 1865. 

 Sphserophfhalma orcus Blake, 1. c, xiii, 209, 9 % > 1886. 



Texas westward to New Mexico and Arizona; Mexico: Chihuahua 

 and Lower California. 



37. mutilla leda Blake. 



Mntilla leda Blake, Tr. Am. Ent. Soc, iv, 72, 9, 1872. 

 I^phxrophthulma leda Blake, ibid, xiii, 216, 9- 1886. 



Texas. The shape of the thorax does not seem to be at all con- 

 stant in this species, approaching in some specimens very close to 

 the hexagonal form of the next section. 



38. Iflutilla creiisa Cress. 



Mutilla creusa Cresson, Proc. Ent. Soc. Phila., iv, 431, 9 , 1865. 



Mutilla medea Cresson, ibid, iv, 432, 9 , 1865. 



3Itifill.a bellona Cressou, ibid, iv, 434, 9, 1865. 



Sphierophthalma bellona Blake, Tr. Am. Ent. Soc, xiii. 221, 9, 1886. 



Sphserophthalma creusa Blake, ibid xiii, 223, 9 . 1886. 



f^pheerophthalma medea Blake, ibid, xiii, 224, 9- 1886. 



Colorado; Texas: Dallas (Boll). Both medea and bellona are 

 identical, except as to minor color differences, with creusa ; a series 

 will show the intergradation. 



39. Ifliitilla segina Cress. 



Mutilla seciina Proc Ent. Soc. Phila., iv. 435, 9 , 1865. 

 Sphserophthalma segina Blake, Tr. Am. Ent. Soc, xiii, 221, 9, 1886. 



Occurs from Kansas : Wallace Co , 3000 feet (Snow) to Arizona. 

 Some specimens have the pubescence pale ochraceous. 



40. Mutilla Clio Blake. 



Mutilla clio Blake, Tr. Am. Ent. Soc, vii, 251, 9 , 1879. 

 Sphserophthalma clio Blake, ibid, xiii, 214, 9 , 1886. 



Vancouver. Only the unique type seen. 



41. Mutilla Sicheliaua Sauss. 



Mntilli Sicheliaim Saussure, Ann. Soc. Ent. Fi'ance, 4e. Ser. vii, 360, pi. 8. f. 



10, 9, 1867. 

 Sphseropothalma Sicheliana Blake, Tr. Am. Ent. Soc, xiii, 217, 9, 1886. 

 Mexico (Saussure) ; Arizona. 



The following nine species have the body sparsely pubescent, and, 

 as a rule, reddish ; the head is narrower than thorax : 



