NEUKOPTEKA— PLANIPENNIA— PANORPIDiE. 173 



beds, all but one (a Bittacus) from amber, this Bittacus, the only relic from 

 Tertiary rocks in Europe, coming from Radoboj. 



The additions we have here to offer are of some interest. Two species 

 have been found, both of which have heavily spotted wings, more heavily 

 spotted than most living types ; one of these, a small species, is refei'red to 

 Panorpa, though doubtfulh^, as it differs so mucli from known types ; the 

 other unquestionably belongs to a distinct genus having no special alliances 

 \Vith any known forms. Botli come from Florissant. The markings of one 

 form dark, transverse IkuuIs on clear ground, of the otlier large, roundish, 

 pale blotches on a dusky ground. (October, 1883.; 



The Florissant genera may be thus distinguished : 



Table of the genera of Panorpidai. 



Ramules of upper branch of radius inferior ; markings consisting of large pale spots on a dark 

 ground 1 . Holcorpa. 



Ramules of upper braucli of radius superior or apical ; markings consisting of dark transverse bands 

 on a clear ground 2. Panorpa. 



1. HOLCORPA Scudder. 



Eolcorpa Scudd., Bull. U S. Geol. Geogr. Surv. Terr., IV, .'i40-54-2 (1878). 



This name' is proposed for a genus of Panorpidse, unquestionably 

 allied to Panorpa, but differing remarkably from it in the total absence of 

 cross-nervules in the wings, excepting, perhaps, at the base. The antennae 

 are probably not veiy long (they are not completely preserved in the single 

 specimen studied), taper very gradually in size, are composed of joints only 

 a little longer than broad, not in the least degree moniliform, and furnished 

 with recumbent hairs. The wings are not so elongated nor so slender as 

 in Panorpa, very regularly rounded, both pairs similarly formed, the hinder 

 pair shorter than the front pair, as in Panorpa. The costa is thickened, 

 the subcosta extends beyond the middle of the wing, but does not reach 

 the pterostigma; the radius emits a superior fork near the base of the wing, 

 which strikes the pterostigma, or, rather, which, by bending downward 

 and then upward, forms the pterostigma in the middle of the apical third 

 of the wing ; tlie radius again forks in a similar manner still far before the 

 middle of the wing, the upper branch emitting three parallel, equidistant, 

 inferior branchlets, the uppermost close to the margin next the pterostigma, 

 the lowest striking the apex of the wing ; the lower radial branch forks 



' The name I have given should perhaps be written Holchorpa; but I have disregarded the aspi- 

 rate, as Llnn6 did in constructing Panorpa. 



