AMERICAN MUTILLID^. 223 



spot at base and apex of second dorsal and two rounded spots laterally, 

 and segments 3-5 entirely; segment 6 with reddish pubescence; tibiae 

 and tarsi blackish \¥i<*kliaini Ckll. 



5. Second dorsal segment with silvery ornamentation 6. 



Second dorsal segment without silvery ornamentation, the pubescence, if 



present, scattered, not taking a definite form 8. 



6. Second dorsal with two rounded silvery spots. Length 3i mm. 



sca;volella Ckll. 

 Second dorsal otherwise maculated. Length 7-10 mm 7. 



7. Second dorsal with a large basal and apical dark macula connected by a nar- 



row line, thereby making the form of an hour-glass; the remainder of 

 segment filled in with silvery pubescence; punctures of thorax coarse, 

 but rather close, not running into reticulations posteriorly. 



conuecteus Cress. 

 Second dorsal with a transverse bar of thin silvery pubescence a little behind 

 middle, which is extended near each side into a narrower stripe almost 

 to base of segment, so J L; thorax with distinct reticulations pos- 

 teriorly conttiiuax Cress. 



8. Head densely covered with appressed pale pubescence: second segment fer- 



ruginous, with sparse silvery pubescence, that of thorax above sparse 



and blackish prseolara Blake. 



Head with soine sparse hairs; second segments bright orange, without silvery 

 pubescence ; thorax above almost bare medially, but bordered by 

 silvery pubescence (scutellar scale large). 



donae-anse Ckll. and Fox. 

 MALES. 



Head rounded behind in such a manner that no postero-lateral angles whatever 

 are evident, roughly and densely punctured ; punctures of body 

 coarse and rather close ; pubescence whitish ; wings fusco-hyaline. 



geryon n. sp. 



Head transverse, the postero-lateral angles evident, the punctuation distinct ; 

 punctures of body not as coarse or close as in geri/on: wings sub- 

 hyaline 2. 



2. Postero-lateral angles of head dentate; cheeks sometimes spined. 



canadensis Blake. 

 Postero-lateral angles of head obtuse 3. 



3. Legs comparatively stout; recurrent vein received by second submarginal cell 



near middle; head rather subquadrate, the punctures rather evenly 



separated gila. Blake. 



Legs slender; recurrent vein almost interstitial with first transverso-cubital 

 vein, or received by second submarginal cell at extreme base; head 

 transverse, the punctures sparser and irregular atliauias n. sp. 



2. Mutilla Touineyi Fox. 



Sphserophthalma Toumeyi Fox, Ent. News, v, 297, J , 1894. 



Arizona : Tucson. 



3. JVIutilla uephele n. sp. 



9. — Ferruginous, sparsely clothed with pale hair; flagellum from se(;ond joint 

 fuscous; legs dark testaceous; second dorsal segment with two round spots of 



TRANS. AM. ENT. SOC. XXV. JANUARY. 1899. 



