152 PROCEEDINGS OF THE ACADEMY OF [April, 



1908. Tettigidea davisi Morse, Psyche, XV, p. 25. [Perth Amboy and 

 Jamesburg, New Jersey; Staten Island, New York.] 



New York. Clayton, 2,000 feet, V, 18-26, 1911, 



Staten Island, IV, 4, VI, 5, IX, 1897- (J- °- Bradley) 1 d 



1900, (W. T. Davis), 2d, 2 9, Groveland, VII, 28, 1913, (J. C. Brad- 



paratypes of T. davisi Morse. nr-^ , TT i ™ <■ i 



va, a, jy Mixon's Hammock, Okeefenokee 



New Jersey. Swamp, V, 16, 1915, (H.), 3 d, 6 9 . 



2 d, [A. N. S. P.]. Waycross, V, 8, 1911, (J. C. Bradley), 



Perth Amboy, V, 31, (W. T. Davis), i ^. 



Id, 19, paratypes of T. davisi Thomasville, II, 29, III, 29, IV, 1, 9, 



Morse. XII, 14, 1903-04, (H.), 6 d, 8 9 . 



North Carolina. Spring Creek, VI, 7-23, 1911, (J. C. 



Fayetteville, IX, 9, 1911, (R. & H.), Bradley), 1 9 . 



I juv. 9 . Florida 

 Wrightsville, IX, 7, 1911, (R. & H.), Jacksonville) ^ ^ (w< H Agh _ 



Lake Waccamaw, IX, 8, 1911, (R. & mead), Id, paratype of T armata 



H.) 14 d 13 9 ., 2 juv. d, 4 juv. 9 . depressa Morse, [Hebard <^m.J. 



South Carolina. Louisiana. 



Florence, IX, 6, 1911, (R. & H.), New Orleans, (Coleman), 4 9 , 1 para- 



II d, 9 9, 6 juv. d, 10 juv. 9 . type of T. armata depressa Morse ; 



Georgia. (Saltan), 2 d, 2 9 , [all Hebard Cln.]. 



Rabun County, VII, 1910, (W. T. 



Davis), 1 d. 



As Tettigidea armata depressa is based solely on the abbreviate 

 form of armata, the name is placed in the synonymy here. 



Morse's Tettigidea davisi, referred to in his original description as 

 "an undescribed form or species of this genus, related to armata 

 Morse," was separated by "the customary lack of a cuspidate point 

 on the front margin of the pronotum .... occasionally showing 

 variations toward a cuspidate condition" and also slightly different 

 tegmina, in other respects being typical of armata. 



The series before us shows that the cuspidate condition of the 

 cephalic margin of the dorsum of the pronotum is variable in the 

 present insect; the following table of percentages gives the degree 

 in the larger series we have examined. 



Strongly Moderately Weakly Angulate, 

 cuspidate cuspidate cuspidate. no cusp 

 (fig. 5). (fig. 4). (fig. 3). 



New Jersey 6 94 



North Carolina 84 10 4 2 



South Carolina 76 18 2 4 



Georgia 70 28 2 



Louisiana 100 



The above figures show that, although there are indications of an 

 incipient division in the present species, no valid geographic race 

 yet exists. The table does not mean that four types of this species 

 occur, for every shade of intergradation exists and the four columns 



