148 



in the male, slightly divergent posteriorly in the female ; posterior 

 margins of the sides sloped, but not sinuous; apex rounded; transverse 

 incisions distinct, crossing the dorsum in the female, the posterior only 

 crossing in the male ; anterior margin and posterior lobe densely punctate, 

 remainder smoother and sparsely punctate. Elytra very small, oblong- 

 ovate, reaching the tip of the second segment, not meeting on the back; 

 nerves reticulate, prominent. Wings minute. Posterior femora stout, short, 

 not reaching the extremity of tlie abdomen. Sub-anal plate of the male 

 curved upward, tuberculiform ; upper plate triangular ; cerci small, rather 

 slender. Prosternal spine stout, conical. Abdomen of the female elongate. 



Colo?- (dried after immersion in alcohol). — Alternating rings of dark- 

 purple and white. The dark stripes are placed as follows : Down the frontal 

 costa ; on the occiput ; down each cheek ; two interrupted broad stripes 

 running obliquely upward and backward from the anterior margin of the 

 sides of the pronotum ; four spots on the base of each abdominal, and two on 

 each ventral, segment (sometimes uniting into a continuous ring); posterior 

 femora crossed by three broad bands. Nerves of the elytra white ; spaces 

 black. Colors of the male and female the same. When living the white 

 stripes are partly or entirely bright-red, and the dark-purple a shining black. 



Dimensions. — 9 Length, 1.3 inches ; posterior femora, 0.6 inch ; prono- 

 tum, 0.28 inch, s Length, 0.95 to 1 inch; posterior femora, 0.5 inch; pro- 

 notum, 0.26 inch. 



Eastern Colorado (Thomas) ; Kansas (Dodge). 



F. s'laciaEi!^, Scudd., Best. Jour. Nat. Hist., VII, 630. 



Head not large; vertex sulcate; frontal costa witji a deep sulcation and 

 depression at the ocellus ; eyes not prominent, not elongate, docked anteriorly 

 and very slightly above. Pronotum a little widest posteriorly ; anterior and 

 posterior margins truncate; lateral carinse almost obliterated, obtusely rounded; 

 median very slight. Prosternal spine rather short and I^lunt, compressed 

 laterally. Apterous, having neither elytra nor wings. 



Color. — Female. Vertex, disk of the pronotum, and abdomen olivaceous- 

 green ; a broad, black band behind the eye, crossing the sides of the pronotum 

 to the tip, extending upon the abdomen in the form of transverse streaks; 

 pronotum, l)elow this, greenish-yellow, with a medial l)lack spot. Vertex and 

 pectus greenish-yellow; prosternuni dusky. Front and sides of the head 



