206 CHARLES A. BLAKE. 



with white haii-s, calcaria white ; abdomen ovate, ferruginous, basal segment 

 small, punctured, with a ventral carina terminating in an acute tooth anteriorly; 

 second segment finely and closely punctured, apical margin clothed with silvery 

 pubescence ; the remaining segments fringed with a thin golden pubescence, 

 ventral surface same as above, lateral carina; distinct. Length 8.r> mm. ; expanse 

 of wings 11 mm. 



Hal). — Texas. Belfrage. 



Mutilla pnteola Blake. 



Female. — Ferruginous; head round, wider than the thoi'ux, closely and evenly 

 punctured; eyes round, large; cheeks clothed with white sericeous pubescence; 

 antennae fuscous ; thorax elongate ovate, nai-rowed to apex, closely and regularly- 

 punctured, sides slightly sericeous; legs fu.scous, thinly clothed with scattered 

 white hairs; abdomen ovate, basal segment clothed with sericeous white pubes- 

 cence, second closely and regularly punctured, its apical margin fringed at sides 

 with silvery pubescence, fuscous at middle, third segment fuscous, apex paler. 

 Length 5 mm. 



Hal). — Texas. Three specimens. 



Allied to pygmea Blake, from which it differs by the narrow thorax, 

 and in being destitute of the long hairs of the abdomen. 



^lutilla parvula n. sp. 



Female. — Ferruginous ; head rounded, clo.sely xiuuctui-ed ; antennse, scape and 

 first joint of flagellum bright ferruginous, remainder fuscous ; eyes ovate, tips 

 of mandibles black ; thorax ovate, narrowed posteriorly, clo.sely punctured, meta- 

 thorax abruptly truncate, thinly clothed with erect, glittering white hairs ; legs 

 fusco-ferruginous, thinly clothed with white pubescence ; abdomen ovate, basal 

 segment apically broad and sessile with the second segment, which is finely punc- 

 tured, its apical margin and remaining segments, which are fuscous, thinly 

 fringed with pale pubescence ; ventral surface paler than above. Length 4.5 mm. 



Hab. — -Alabama. 



This species corresponds so nearly with M. pnteola in appearance, 

 that it can only be separated by the form of the basal segment of 

 the abdomen being sessile with the second, whereas in the latter it is 

 cylindrical. 



Genus 3, SPH/EROPHTHAL,MA Blake. 



Male. — Head transversely rounded, or subquadrate, with the i)()S- 

 terior angles round, rarely as wide as the thorax, which is generally 

 ovate ; eyes round, prominent and polished ; the wings vary from 

 dark fuliginous to fusco-hyaline, the latter more or less clouded ; 

 abdomen ovate, subpetiolate. 



Female. — The form of the head differs widely ; in some species it 

 is rounded, or subquadrate ; sometimes enormously developed, being 

 twice the width of the thorax, and armed with strong spines beneath 



