REHN AND HEBARD OO 



acters given for the female, ''elytris nullis; vagina recta, abdo- 

 mine longior," are only sufficient to separate the species from 

 monticola. The length of the body and of the caudal femora 

 given in the original description, without indication of sex, 

 while less than any found in the material before us, do not 

 invalidate at all the claim of this species to Burmeister's name. 

 The body length given could easily be accounted for by the 

 abdomen being shrunken, a condition which is quite capable 

 of making a change of as much as five millimeters, while 

 geographic or individual size variation could easily cause the dis- 

 crepancy seen in the femoral length. In the five females exam- 

 ined by us we find a difference of 2.7 mm. in the femoral length, 

 while in the related testaceus our series shows a variation of 

 2.4 mm. in both sexes. It seems evident to us that Burmeister 

 either measured a very small specimen or in giving the caudal 

 femoral length merely approximated the actual proportions. 

 There is a possibility of error in the figures, as he gave them as 

 "Long. Corp. 9", femur, post. 8".", using the inch sign instead 

 of that for lines, but as this is evidently an error we have used 

 them as if clearly expressed in lines. The femoral length may 

 show undue difference from our measurements on account of 

 difference in method of taking the same; our length of this 

 portion is always taken along the ventral line, while one taken 

 along the dorsal line would give a length at least one-half milli- 

 meter less. As shown by an examination of the information 

 given under testaceus, that species has not been definitely recorded 

 from nearer South Carolina than Arlington, Virginia, and central 

 Kentucky. There is no evidence that testaceus could even be 

 considered a northern form extending into the mountainous 

 region of South Carolina, as we have no information on its occur- 

 rence in any of the really mountainous areas of its range. In 

 Pennsylvania, for example, it is replaced in the mountains proper 

 by the short-tegmined davisi. 



Morphological Notes. — The disk of the pronotum shows the 

 usual variation in the greatest (caudal) width of the same, this 

 being more appreciable in the males before us than in the females. 

 A glance at the measurements will show the extent of this varia- 

 tion. The male subgenital plate, as above mentioned, varies 

 in the degree of angulation of the caudal margin. The cerci of 

 the male vary somewhat in robustness and in the degree of the 



TRANS. AM. ENT. SOC, XLII. 



