2l6 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



to be Thomas' type as they bear his label. His description of the 

 species, however, was based upon the female. In addition to these 

 are numerous specimens from Nebraska, Te.xas, and Wyoming. Two 

 females from Texas are of larger size than the others, the lateral stripe 

 is distinct and occupies the upper half of the lateral lobe of the pro- 

 notum, and the vertex is a little wider and more rounded. 



VIII. PEDETICUM, n. gen. Fig. 8. 



This genus is very closely related to Opeia, and does not differ 

 materially in the structure of the head except in the possession of sup- 

 plementary lateral carinse more or less distinct. In the following- 

 particulars it seems to be too different to be united with that genus. 

 The pronotum has the lateral carinas strongly sinuate a little in advance 

 of the middle. None of the carinte are cut by any of the sulci, and 

 these are almost entirely obsolete. The anterior and posterior borders 

 of the disk of the pronotum are straight. The mesosternal lobes are 

 separated by a space decidedly (female) or a little broader than long, 

 and the metasternal lobes are contiguous behind and inclose two very 

 deep pits. The tegmina are abbreviated, less than one-half (female) 

 or nearly three-fourths (male) as long as the abdomen. The valves of 

 the ovipositor are moderately exerted. 



This genus contains but one species which, in spite of its very dif- 

 ferent appearance, is really closely related to Opcia obscii7'iis, Thos. 

 I should have hesitated to erect this genus but that if it is not done 

 Scudder's species would become a synonym and I should be compelled 

 to give it a new specific name ; and in case these species should after- 

 wards be considered generically distinct (and this seems extremely 

 probable as the tendency undoubtedly is to restrict more and more 

 generic groups) there would be a useless synonym. 



I. Pedeticum obscurum, Scud. Fig. 8a, Sb. 



Chrysocliraon obscuriis. Scud., 1877 Ent. Notes, VI, 29. 



Chrysochraon obsciirus, Bruner, 1883. 3rd Rept. Ent. Com., 55. 



Hab. Fort Reed, Florida. 



As this specimen has not been reported in any other collection than 

 that in which Dr. Scudder first found it there is little doubt but it is a 

 local and very rare species. I have examined a specimen from Scud- 

 der's collection. 



