276 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



other from Port of Spain, Trinidad, which specimen has the ven- 

 tro-cephahc margins of the median femora armed with 7 and 7 

 spines. In these specimens the extra (proximal) seventh spine 

 is decidedly smaller than any of the others and abnormal in ap. 

 pearance; in C. a7igustifrons this spine is much more like the 

 other six. 



The ventro-external margins of the caudal femora are armed 

 in the one hundred and ninetj'-four perfect specimens before us 

 as follows: 

 Number of spines, 

 Number of specimens. 

 Number of spines, 

 Number of specimens, 

 Number of spines. 

 Number of specimens, 



Of the five specimens with these margins unarmed, four are 

 .from Trinidad and one from Venezuela. The Paraguayan series 

 average nearer the maximum number than do the others and one 

 specimen bears a single spine on one of the ventro-internal mar- 

 gins as well; otherwise every series exhibits about the same 

 amount of variability. 



The genicular lo])es of the caudal femora are normally bispinose, 

 in the series before us one of these lobes is unispinose in thirteen 

 specimens, two are so in one specimen, while all are in this con- 

 dition in one. 



Specimens Examined: 276; 114 males, 1.51 females, 4 immature males and 7 

 immature females. 



Montserrat, West Indies, III, 1, 1S94, (H. G. Hubbard), 1 o^ [U. S. N. M.], 



(brach.). 



Pointe a Pitre, Guadeloupe, West Indies. VI. 6, 1911, (Crampton and Lutz), 

 2 d^, 1 9. [A. M.N. H.], (brach.). 



Roseau, Dominica, West Indies, VI, S, 1911, (Crampton and Lutz), 1 d', 

 [A. M. N. H.], (brach.). 



Laudet, Dominica, West Indies, VI, 12, 1911. (Crampton and Lutz), 1 cf , 

 1 9, [A. M. N. H.], (brach.). 



Long Ditton, Dominica, West Indies, VI, 20. 1911, (Crampton and Lutz), 

 7 cf,4 9. [A. M. N. H.], (brach.). 



Martinique, West Indies, VII, 26, 190.5, (A. Ikisck), 1 9, [V. S. X. M.], 

 (brach.). 



Saint Lucia, West Indies, XI, 25, 1912, (H. 8. Parish), 1 9, [A. X. 8. P.], 

 Macr.). 



San Mateo, Costa Rica, I, 1903, 250 meters elevation, (P. BioUey), 1 9, 

 Hcbard Chi.], (macr.). 



