SPHEEROPHTHALMA. 31 7 



^, Spharop^ ,*«_ 



Mutilla quadridens, Blake, Trans. Am. Ent. Soc. vii. p. 247 x . 

 Spheerophthalma quadridens, Blake, op. cit. xiii. p. 247 2 . 



Hab. Panama (Strecker 1 2 ). 



b. The cheeks not produced into teeth (Species 8.) 



8. Sphserophthalma gabbi. 



Mutilla gabbii, Blake, Trans. Am. Ent. Soc. vii. p. 248 \ 

 Spheerophthalma gabbii, Blake, op. cit. xiii. p. 247 2 . 



Hob. Costa Rica {Gabb 12 ). 



ii. The head carinate behind. (Species 9-31.) 

 a. The keel ending beneath in a spine or tubercle. (Species 9, 10.) 



9. SphsBrophthalma lerma. 



Mutilla lerma, Blake, Trans. Am. Ent. Soc. iii. p. 251 \ 

 Spheerophthalma lerma, Blake, op. cit. xiii. p. 248 2 . 



Hab. Mexico (Sumichrast 1 2 ). 



This species differs from S. inimica in having the head ferruginous, with golden 

 pubescence on the vertex, and the second abdominal segment with two pale yellowish 

 spots. 



10. Sphaerophthalma blandina. 



Mutilla blandina, Smith, Descr. of New Species of Hymen, p. 227 (1879) \ 

 Spheerophthalma blandina, Blake, Trans. Am. Ent. Soc. xiii. p. 257 2 . 



Hab. Mexico, Orizaba 1 . 



I follow Blake in placing this species here, but Smith says nothing about the head 

 being keeled. 



b. The keel beneath not ending in a spine or tubercle. (Species 11-31.) 



The first seven species of this section may be distinguished as follows : — 



1 (10) . The head acutely produced behind, at the top ending in a sharp" point. 



2 (5) . The abdomen with a cross-shaped mark. 



3 (4). The thorax elongate, distinctly narrowed towards the apex, the latter 



stoutly keeled inimica. 



4 (3) . The thorax short, not distinctly narrowed towards the apex, laterally with- 



out keels beata. 



