1908.] NATURAL SCIENCES OF PHILADELPHIA. 387 



and wings in the females, while the same is true of the caudal femora. 

 The disk of the wings is lemon yellow in all the specimens and the 

 transverse bar is not distinctly marked. The caudal margin of the 

 disk and lateral lobes of the pronotum are distinctly colored with 

 yellowish in a few specimens, while the angle of the tegmina is lined 

 with the same in three specimens and with whitish in two others. 

 This species was found in the same situation as Metator pardalinum. 



TREPIDULUS McNeill. 

 Trepidulus rosaceus (Scudder). 



This very interesting species is represented by a series of twenty-nine 

 males and twelve females. The localities at which it was taken are 

 Tucson, July 26 (10 d", 9 ? ) ; near Sonora Road, July 25 (15 d', 2 9 ) ; 

 Roeble's Ranch, July 25 (3 c?, 2 9 ), and Yuma, July 28 (1 d"). In 

 size the series exhibits an appreciable amount of variation, while the 

 coloration shows all conditions of ashy washes and blackish speckling 

 and blotching, particularly on the dorsal aspect of the closed tegmina, 

 while the base color ranges in spots from ochre to seal brown. The 

 pale ventral portion of the lateral lobes of the pronotum is, however, 

 sharply defined in every individual, and the two dorsal blotches on the 

 caudal femora are distinct in all but one female specimen. Attention 

 should be called to the fact that the Yuma individual is uniformly 

 more grayish than specimens from the Tucson region, the maculations 

 being sub-obsolete. 



This species was found in the same restricted locality along the 

 Sonora Road as Tomonotus aztecus and Trepidulus melleolus, where it 

 was moderately plentiful; at Yuma the single specimen encountered 

 was taken on a broad flat of high weeds which had been completely 

 dried by the extreme heat. It was found common among desert growth 

 at Tucson, on the outskirts of the Mexican section of the town. 



Trepidulus melleolus (Scudder). 



Two males from the vicinity of the Sonora Road, July 25, and two 

 males and a female from Roeble's Ranch, July 25, represent this 

 interesting species. It appears from the material in hand, five males 

 and two females, that there is a great amount of individual variation 

 in size in both sexes; the two females before us, one from Roeble's 

 Ranch, the other from San Bernardino Ranch, Cochise County, having 

 a considerable difference in size. The coloration is fairly constant in 

 character. 



This species enjoys a range from northeastern New Mexico (La 

 Trementina) to Pima County, Arizona. r 



