1916.] NATURAL SCIENCES OF PHILADELPHIA. 177 



North Carolina. Tuckoluge ('reck, Rabun County, VII, 



Weldon, VII, 24, 15)13, (R. & H.), T 1910 > W- T. Dayis), 3 9 . 



1 ', 19, ] juv. d". Jasper, 1,550 feet, Mil, 5, 1913, (R.), 



Greensboro, VII, 26, 1911, (R. & H.), „, 1 <?• , TrTTT 



19,1 juv. oV 1 juv. 9 . Toceoa, 1,094 feet, VIII, 4, 1913, (H.), 



Charlotte, VII, 27, 1913, (R. & H.), 19- 



1 j uv 9 ■ ( urranee Mountain, v III, 5, 1913, 



Fayettevffl'e, IX. 9, 1911, (R. & H.), ( H -)> 1 <f- „.„ . _ ft ,,, 



Ij 19 1 hoinpson s Mills, spring 1909, (Al- 



Winter Park, IX, 7, 1911, (R. & H.), lard )> I <?> * 9 - l r - S - N - M -l- 



1 - Rome, VIII, 21, 1910, 1 cf, 19, 



South Carolina. [Ga. State Cln.]. 



Florence, IX, 6, 1911, (R. & H.), Bx \ ck [ 1Q % d X VK'vV 913, (R " & H ' } ' 

 j-ijo i a , - v , - juv. ci • 



Sullivan Island, IX, 5, 1911, (R. & H.), ^iS^^^)^ feet ' VU1 ' 3 ' 



r Vicinity of Stone Mountain, VIII, 3, 



, 9 : r 1913, (R. & H.), 1 cT, 1 9 . 



Clayton 2,000 feet, V, 18-26, 1911, Gainesville, IV, 12, 1911, (J. C. Brad- 



(J. C. Bradley), 2 <?; VI, 1909, j ey ) 19 



(W. T. Davis), ,5 cf, 49. Augusta, VII, 29, 1913, (R. & H.), 



Pinnacle Peak. VIII, 20, 1913, (J. C. 3*^ 79 2 juv c?. 



Bradley), 2 d>. Macon, VII, 30-31, 1913, (R. & H.), 



Black Rock Mountain, 3,000 and 3,500 q j eg 1 hiv Q 



feet, V, 20-25, 1911, (J. C. Bradley), ° ° - ° ¥ > J 



I oM9. 



In the series before us a perceptible increase in robustness is found 

 southward in the distribution at low elevations of the present species ; 

 this is accompanied by an appreciable reduction in the pronotal 

 crest and a moderate broadening of the vertex. Material from 

 altitudes of 3,000 feet or over in the mountains of North Carolina 

 and Georgia is quite similar to material from Massachusetts, but 

 the pair before us from elevations of 3,000 and 3,500 feet on Black 

 Rock Mountain, Georgia, are very large, more attenuate, with higher 

 crest and more compressed vertex, the dorsal surface of which is 

 excavate. 



Although material of the present species from the country adjacent 

 to that in which C. australior is found shows certain characters more 

 like those found in that species, no intergradation whatever exists, 

 and C. australior shows definitely a more recent common ancestry 

 with C. cubensis, as has already been observed. The southeastern 

 limits of the present insect's distribution define sharply the north- 

 western limits of the range of C. australior, which throughout its 

 range appears to wholly supplant C. viridifasciata. 



Male immature examples in the earliest instars have the subgenital 

 plate scoop-shaped, in the larger young this plate is much as in the 

 adult condition. In the above series there are very small young 

 from Lynchburg, Virginia; Greensboro and Charlotte, North Carolina, 

 and Augusta, Georgia, which afford decided evidence that the insect 



