AMERICAN HKMIPTERA 1!) 



can species, E. altern.atus Say, by its large size, depressed form, flat 

 triangular head aud thorax, and the carinate scutellurn. 



Genus OI>0^'TOSrf:LIS Lap. 



This genus may be distinguished from Caminis by the absence of 

 an extei'nal osteolar orifice and by the short transverse prouotum, 

 tlie surface of which, while flattened, has no transverse furrow bul 

 a distinct longitudinal depression parallel to the lateral nuirgin. 

 The margins in the typical forms are feebly arcuated and expanded 

 so as to form a more or less distinct ledge beneath on the sides of 

 the propleura. In the Eui'opean dormlis aud fuliginosa the head is 

 shorter than liroad, and rounded l)efore and the pronotal margins 

 are incised before the humeral angles. In the two species descril)ed 

 below, the head is longer and the humeri are entire, but with the 

 limited material at my command I do not like to establish a new 

 genus on these characters alone. 



In the Bulletin of the U. S. Geol. and Geog. Survey of the Terri- 

 tories, vol. ii, pi. xix, flg. 4, Dr. Uhler figures an Odontoscelis catu 

 lus Uhler, and includes the sam6 name in his Check List, with the 

 habitat " W. Ind." I cannot, however, find that he ever published 

 a description of this form, and Lethierry and Severin omit it from 

 their Catalogue Generales des Hemipteres. The following key may 

 assist in discriminating the sjiecies described below : 



Buculte triangularly elevated posteriorly ; head shorter, hroad at tip, dark hrowii ; 

 sides of the prouotum feebly arcuated; scutellurn with veriniculate 

 brown markings -Bitll J. 



Buculse rounded, liead longer, obtusely triangular at tip, black ; sides of the pro- 

 uotum feebly sinuated ; scuteilum with an incomplete black annulus 

 at apex, and in the female with a black subbasal patch and indistinct 

 oblique rays prodiicta. 



Odontoscelis Balli n. sp. 



Closely allied to rforsa/ts of Europe but a little smaller and more elongated in 

 form. Fulvous brown, closely punctured and coveied with a shoit cinerous i)u- 

 bescence, which becomes longer oti the head, sides of the pronotum, and abdominal 

 margins; scuteilum with vermiculate brown marks. Head a little longer and 

 more convex above than in fZors«?i.s sides before the eyes alnjost parallel, the aj)ex 

 broadly rounded; cheeks broad at apex, tumid, the sutures either side of the 

 tylus deeply impressed, color dark brown, closely covered with a long brown 

 pubescence mixed with cinerous along the sutures. Buculse elevated posteriorly 

 in a broad triangle. Anlennse rufous-brown, in structure characteristic of the 

 genus; second and third joints subequal, fourth longer, fifth longest and with 

 the preceding slightly flattened. Kostrum reaching the posterior coxa?, apical 



TRANS. AM. ENT. SOC XXX. rEBKU.\RY. 1904 



