330 TEKT1ARY INSECTS OF SOltTJH AMERICA. 



having the apex above the middle ; the costal margin also is ranch 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 distantly punctuate, more conspicuous on the basal than 

 the apical -half. 



Table of the species of Lithecphora. 



(Jostal margin of tegmina distinctly thickened. 



Tegmina with the costal margin bristled and a large pallid patch just beyond the middle -1. L.seiigera. 



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

 Costal margin of tegmina not distinctly thickened. 



Tegmina without costal markings 3. L.unicolor. 



Tegmina with costal markings 4.1. murata. 



if 



1. LlTHECPHOBA SETIGEBA. 



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 

 extremity of the body is much broken ; the margins of the tegmiua are 

 remarkably 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 border at the middle of the wing. 



Length of body (partly estimated), 7.25 mm ; breadth of thorax, 2.75 mm ; 

 length of tegmina, 6 mm . 



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



2. LlTHECPHOBA DIAPHANA. 



PL 21, Fig. 13. 



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

 mina and wings half expanded. The body is dark 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 



