128 OETHOPTEEA. 



Saskatchewan, most abundant northward on the high prairies. — Mexico, Durango 

 (O.W.Barrett: <? $ ). 



As indicated in the table, the apices of the wings are less deeply fuliginous than in 

 the next species, but much less vitreous than they are in the insect which is here 

 referred to A. ovaticeps. 



15. Arphia crassa, sp. n. 



A large, coarse, heavy-bodied, dark brown insect, with bright vermilion wings, which are very broadly 

 bordered externally with black, the tegmina profusely and rather evenly sprinkled with irregular dusky 

 spots. 



Head somewhat broader than the front edge of the pronotum, decidedly oval in form, the lower portion 

 having a rather swollen or bloated appearance, due to the carinas fading away before reaching the 

 clypeus ; vertex deflected and evenly rounded, its scutellum broadly pyriform, with a prominent 

 longitudinal carina and bounding walls ; lateral foveolse of medium size, elongate-quadrate, the upper 

 inner angle broadly rounded ; frontal costa broad and shallowly sulcate, the margins coarse and fading 

 away below the ocellus, above longitudinally carinate in the middle, and at the upper extremity faintly 

 bifoveolate. Pronotum rather deep, the sides compressed, the disc somewhat rugose, the carina of 

 medium height, the two sections separately arched ; anterior edge slightly angulate, the hind margin 

 right-angled. Tegmina broad, extending one-fifth (?) or one-third ( g ) of their length beyond the tip 

 of the abdomen. Wings with the dusky band very broad, occupying fully half their extent in the c? 

 and nearly as much in the $ , the apex entirely dark. Hind femora broad, their inner face and lower 

 sulcus black, save for a faint, narrow, praeapical annulus and two small irregularly shaped pale spots 

 along the upper edge. Hind tibiae very dark brown ( $ ) or glossy black ( g )• 



Length of body, g 24, $ 36 • of pronotum, g 6, $ 9 ; of tegmina, g 26-5, $ 31-5 ; of hind femora, g 14, 

 $ 19 millim. 



Hab. North America, Southern Arizona (/. G. Lemmon)^ Silver City, New Mexico 

 (Grant). — Mexico, Northern Sonora or Chihuahua (coll. U.S. Dept. Agr.). 



This species seems to be most nearly related to A. pseudonietana, differing from that 

 insect in its much larger size and coarser form, and in having the two portions of the 

 median carina of the pronotum separately arched. The black border of the wings is 

 also much more extended in A. crassa than it is in A. pseudonietana. Another form, 

 perhaps specifically distinct, is to be met with in abundance in portions of the mountain 

 regions of central Chihuahua, where specimens were taken by Mr. C. H. T. Townsend ; 

 this insect has the dusky wing-band partially interrupted and in some instances 

 somewhat abbreviated on the posterior margin towards the anal angle, while the 

 hind margin of the disc of the pronotum is somewhat acute-angled. Otherwise 

 the differences are scarcely sufficient to warrant its separation under a distinct name. 



16. Arphia conspersa, Scudd. 



Arphia conspersa, Scudd. Proc. Bost. Soc. Nat. Hist. xvii. p. 514 (1875) 1 ; Sauss. Prodr. CEdip. 

 p. 70 (1884) \ 



Hab. North America l 2 , South-western Texas (coll. L. Bruner), Iowa, Nebraska, &c. 

 (L, Bruner). 



