OF WASHINGTON. 391 



the bark but not the year later. He referred to a peculiar form 

 found in the winter time under the bark of dead orange trees in 

 all stages of existence. Mr. Heidemann thinks that the Aradidae 

 feed on fungi. Mr. Schwarz stated that, in his experience, the 

 family may be divided into two classes, according to food habits, 

 the one appearing to feed upon a blackish mould under the bark, 

 while others live outside of the bark of dead trees, upon a whitish 

 fungus. Mr. Caudell stated that in Oklahoma he had found the 

 same species two years in succession on a burned red-oak tree. 



The second paper of the evening, by Dr. Dyar, was entitled 

 ''A New Species of Bertholdia," the description being accom 

 panied by the exhibition of specimens of the new form, B. soror, 

 and also of three allied species. 



A NEW SPECIES OF BERTHOLDIA. 



By HARRISON G. DYAR. 



Bertholdia so rot- n. sp. 



Head brown, orbits crimson, palpi white, crimson above; thorax russet 

 brown with a few red scales, edges of tegulse grayish; abdomen crimson 

 above, white below, with lateral black dots; legs white, knees gray, fore 

 femora red above. Fore wings lilacine gray, the basal half irregularly 

 suffused with light ocherous brown; an oval white spot on the middle of 

 vein i ; subapical hyaline area shaped as in phtlotera, faintly edged with 

 reddish, but without a black border and the dots on the veins 5 and 6 are 

 faint and gray. Hind wings white, semihyaline, inner margin pink. 

 Expanse 32-34 mm ; one male, two females; Venezuela (Hrdlicka). U.S. 

 Nat. Museum, type no. 4252. 



Synopsis of Species. 

 Hind wings smoky gray, darkest on the outer edge. 



Fore wing brown ; hyaline space dentate, its upper portion 



retracted ; dot on vein i yellow philotera Druce. 



Hind wings nearly hyaline, a narrow gray terminal line. 



Fore wing gray ; hyaline space dentate, its upper portion 

 not retracted ; dot on vein i yellow. . . .specularis H. S. 

 Hind wings white without gray border, but rarely a touch of gray 

 on the veins in the female. 

 Teglulaa not white bordered. 

 Hyaline patch dentate." 



Spot on vein i yellow or absent, .schausiana Dyai. 



Spot on vein i white soror Dyar. 



Hyaline patch not dentate, prolonged below toward the 



enlarged yellow dots trigona Grote. 



Tegulse white bordered, forming a white spot in the middle 

 of the collar. 



Fore wing with purple discal area and white sub- 

 marginal line albipuncta Schaus. 



