396 GEOLOGICAL SURVEY OF THE TERRITORIES. 



Miirgantia, Stal. 



M. 1tistrio7iica, Halin, (Wanz. Ins., vol. II, pi. 65, Fig. 190.) — Collected 

 in Colorado -, but injures cabbages and other garden vegetables in the 

 Southern States, from Maryland to Texas, and even into Mexico. Sev- 

 eral of the links in the chain of varieties between this species and M. 

 Tdundaj StM., have already been found, and we may expect hereafter to 

 see the two species united as mere forms of one. 



Ccenus, Dallas. 



1. C. delia^ Say, (Heteropt., New Harmony, p. 8, No. 18;) C. tarsalis, 

 Dallas, (British Museum, List. Hemipt., p. 230, PL 8 ; Fig. 6.)— From Fort 

 Cobb, Indian Territory, also in most of the Eastern States. 



2. C. cequalis, Say, (Heteropt., New Harmony, p. 7, No. 15.) — Same local- 

 ities as the preceding. 



UuscMstus, Dallas. 



1. U. fissilis. New species. — Differs from U. serva^ Say, its near con- 

 gener, in the cleft Iiead and prolonged lateral lobes of the head. It is 

 larger than U. pimctijyes, Say, and the humeral angles are much less 

 acute. It is found in Colorado, Nebraska, and Illinois. 



2. U. ptinctipes, Say, (Jour: Acad. Phila., IV, p. 314, No. 5.) — 

 Colorado, and most parts of the Eastern United States. . • 



3. U. injrrhocerus, H. Schf., (Waoz. Ins., vol. YI, Fig. 638.^— From 

 Fort Cobb, Indian Territory, but not uncommon in JVIissouri and in the 

 Atlantic region. It varies in the acuteuess of the humeral angles. 



FeribaluSj Stiil. 



P. moclesttis. New species. — Grayish -yellow^, general form of P. vernalis, 

 Wolff; but with the humeral angles less prominent, and the lateral 

 margins of the i:)ronotum not siuuated. Upper surface of the head finely 

 punctured with black, tlie punctures more dense and forming a submar- 

 ginal spot or short streak before each eye ; the intra-orbital surface with 

 a smooth, impunctured, short line; the lateral margins a little reflexed, 

 slightly siuuated a little in advance of the eyes ; the side lobes much 

 longer than the tylus, usually meeting before it, but not always quite 

 in contact at the tip. Under side of head pale yellowish, irregularly 

 punctured, the angle before the eye more or less black, the lateral edge 

 piceous or black. Antennae rufous or testaceous ; the basal joint pale 

 yellowish, shorter than the head; the fourth joint, excepting base and 

 tip, and the fifth, excepting the base, blackish ; the last stout, longest ; 

 the former quite stout, not quite so long as the latter, but longer than 

 the others ; second and third slender, subequal. Eostrum pale testa- 

 ceous, the middle line and all but the base of the apical joint blackish- 

 piceous, extending to the intermediate coxa^ ; the second joint much the 

 longest; apical joint much the shortest; the third joint a little longer 

 than the fourth. Pronotum rather short and broad, a little more coarsely 

 and less densely punctured than the head; the punctures dense, making 

 a blackish stripe along the lateral submargin; the lateral margins 

 straight, thickened, elevated, yellowish or white, smooth, impunctured ; 

 latero-posterior margins feebly sinuated; humeri rounded, very slightly 

 prominent. Pectus pale testaceous, unevenly punctured; the areas of 

 the pleural jneces with punctures more or less brownish, usually with a 



