186 



PSYCHE. 



[Ma 



line four fifths of width between the eyes. 

 Pronotal breadth somewhat more than twice 

 and a third the length, the latter slightly 

 greater than that of the vertex. Elytra 

 scarcely equalling the tip of the ovipositor. 

 Color pale sordid fulvous. Front with about 

 seven dark transverse curved arcs on either 

 side, sutures of front, clypeus, and lorae 

 black. Front edge of vertex with a large 

 more or less distinct black spot on either 

 side of ape.v,and a small one at its extremity. 

 Disc of vertex with a median transverse 

 brown cloud on either side, and an acute 

 black point springing from the hind margin 

 on either side. Pronotum cinereous, lighter 

 on anterior margin where there occur more 

 or less distinct spots as follows : two approxi- 

 mate near median line, two behind eacli eye, 

 and usually one elongate near the lateral 

 margin. Sciitel pale fulvous, basal angles 

 and an irregular area on median portion 

 darker. Elytra opaque, nervures whitish. 

 Dorsum as in brachypterous female, of 

 which see description below. Venter except 

 portions of last segment blackish, pygofers 

 each with a median longitudinal brown 

 stripe. Abdomen sometimes suffused with 

 a deeper black. Anterior and middle femora 

 with a more or less distinct dark annulus 

 near the knee. 



Brachypterous female. Elytra not half 

 length of abdomen, hind margin very broadly 

 rounded, nearly truncate. Dorsum with 

 three pairs of fine dark longitudinal lines, 

 one median and two lateral, between these 

 two or three black dots on each segment. 



Last ventral segment of female twice the 

 length of preceding, the hind margin deeply 

 broadly emarginate, the emargination nearly 

 filled by a large obtusely rounded tooth, 

 which is narrowly black margined and about 

 equals the lateral angles. Ovipositor about 

 three fourths the length of the abdomen, ex- 

 ceeding pygofers by one third of its length. 

 Male. Length 3 mm. My specimens are all 

 macropterous. In many the black spots on 

 apex of vertex are reduced in size and light 



brown. The abdomen excepting the plates 

 is darker than is usual in the female, and 

 more or less distinctly variegated with black 

 and yellowish. The valve is about as long 

 as the preceding segment and obtusely angu- 

 late, its disc black. The plates are three 

 times the length of the valve, outer edges 

 straight, inner edges gently curved outward 

 to meet the outer edges in a rather acute 

 point; each plate with a black spot at base. 



Described from one fetnale from the 

 Magdalena Mountains, New Mexico, 

 Aug. '94 (Snow), and numerous speci- 

 mens from Colorado collected by myself 

 at the following points : — Fort Collins, 

 Aug. 3oth to Sept. igth on Bouteloua 

 oligostachya; Foothills west of Fort 

 Collins, April 25th to May 6th ; at 

 Forrester's Ranch on the Upper Lar- 

 amie River (elev. about Sooo ft.) Aug- 

 ust 3d. This is apparently a common 

 species in the West. One female from 

 Colorado is much more strongly ful- 

 vous throughout and has the markings 

 somewhat obscured. 



Atkysaitella occidentalis n. sp. Brachy- 

 terous female. Length 3mm. Closely re- 

 sembling magdalena. Front about as long 

 as broad, once and a half the length of thecly- 

 peus. Clypeus one fifth longer than broad. 

 Vertex obtusely angulate, slightly depressed 

 posteriorly, length at middle nearly equalling 

 the width between eyes. Pronotal width 

 twice and tliree fourths the length, the latter 

 little more than four fifths that of the 

 vertex. 



Color sordid fulvous, darker beneath. 

 Head marked as in magdalena. Pronotum 

 somewhat cinereous, in front medially with 

 four black spots in a transverse row, and 

 laterally two behind each eye. Dorsal seg- 

 ments each with a median transverse row of 



