256 STUDIES IN AMERICAN TETTIGONIIDAE (oRTHOPTERa) 



Measurements (in millimeters) of extremes 

 San Jose del Cabo, Lower California, Mexico 



O o3 0|3 O'^ O 



-*j>i *3s -i^c -w-s *^r 



MT3 Mo Mt;, Ms acf; 



flo cti si' Cc; Co 



(uja ojo, tui:- ojc ojo 



M I-) 1-^ hJ hJ 



<j^ 14.9-16.6 3.4-3.8 16.8-21.1 13.6-13.9 2.2-2.3 



9 13-16.7 3.2-4 18.3-22.8 13.6-15.3 9.5-10.1 



Puntarenas, Costa Rica 



cT 14.9 3.3 14.3 13.2 2 



The present species is now known on the Pacific coast from 

 Coronado Bay, California, to Puntarenas, Costa Rica. It is a 

 halophytic insect, the only species of the genus known as yet 

 from the salt marshes of the Pacific coast. 



In addition to 10 recorded specimens which have been recently examined 

 by us, we here record the following series of 11 specimens; 6 males and 5 

 females. 



San Jose del Cabo, Lower California, Mexico, 5 cf, 5 9, [Hebard Cln.], 

 (dr. alch.). 



Puntarenas, Costa Rica, II, 1907, (P. BioUey; strand, on leaves of I pomaen), 

 1 cf , [A. N. S. P.]. 



Conocephalus insularis (Morse) (PI. XXII, fig. 14; XXIII, 10 and 11; 

 XXIV, 4.) 



1905. Xiphi'lium insularis Morse, Psyche, xii, p. 20. [Stranger Cay, Bahama 

 Islands]. 



The present insect is, as stated by Morse, closely allied to C. 

 gracillimus, but differs from that species in the wider and less 

 produced vertex (width of same two-thirds that of proximal 

 antennal joint), broader and decidedly shallower lateral lobes of 

 the pronotum which causes the ventro-cephalic angle to become 

 more prominent, ""^ slightly less attenuate form and proportion- 

 ately shorter limbs. As in the other species of group C, gracil- 

 limus and iriodes, the convex callosity of the lateral lobes of the 

 pronotum is very broad. A semi-macropterous form is present 

 in this species, which is found to grade without a break into a very 



55 "Distinctly polygonal in outline instead of triangular," Morse, (in com- 

 parison with C. gracillinius). This is rather too brief, for, although the lateral 

 lobes of the pronotum in gracillimus show a nearer approach to a triangular 

 form, the ventro-cephalic angle is distinct in that species also, though very 

 broadly rounded. 



