330 TEHTIAKY INSECTS OF NUKTH AMEKICA. 



having the apex above the middle ; the costal margin also is much thickened, 

 and in one species at least armed with short bristles ; though the substance 

 of the togmina is tenuous, permitting the veins of the wings beneath them 

 to be readily visible, at least in their lower half, the whole is minutely 

 though feebly and distantl}' punctuate, more conspicuous on the basal than 

 the apical half 



Table of the species of Lithecpkora. 



Costal margin of'tegmina distinctly thickened. 



Tegminawith the costal margin bristled and alarge pallid patchjnst beyond theuiiddle.l. L. setigera. 



Tegmiua with the costal margin thickened but not bristled and with no pallid patch.. a. L. diaphaiia. 

 Costal margin of tegmina not distinctly thickened. 



Tegmina without costal markings 3. L.uiiicolor. 



Tegmina with costal markings 4. /,. miirntn, 



1. LiTHECPHORA SETIGERA. 



PI. 20, Fig. 22. 



A single specimen is known, obtained by the Princeton College Expedi- 

 tion. The wings of the right side are partly expanded, but the anterior 

 extremit}- of the body is much broken ; the margins of the tegmina are 

 remarkabh' parallel, the costal edge fringed with very short spinous bristles ; 

 the apical margin is very regularly rounded, the apex falling in the middle. 

 The body is black and the tegmina pale fuliginous, with a large roundish 

 pallid patch on the costal margin, crossing about two-thirds of the wing, its 

 inner boi'der at the middle of the wing. 



Length of body (partly estimated), 7.2.'^'"°' ; breadth of thorax, 2.75°"" ; 

 length of tegmina, 6""". 



Florissant. One specimen, No. 1.121, Princeton Collection. 



2. LiTHECPHOEA DIAPHANA. 



PI. 21, Fig. 13. 



A single specimen is known, preserved on a dorsal view with the teg- 

 mina and wings half expanded. The body is dai'k brown, the tegmina 

 apparently diaphanous or almost so, at least in the lower half, for the veins 

 of the wings show through them perfectly; the costal margin is nearly 

 straight, but has a slight and constant convexity, so that the two margins 

 are not quite parallel ; this same margin is much thickened, more so in the 



