358 STUDIES IN THE ISCHNOPTERITES (oRTHOPTERA) 



Allotype. — 9 f* San Jose del Cabo, Lower California, Mexico. 

 [Hebard Cln.] 



Description of Allotype. — Similar to type in ambisexual characters, differ- 

 ing very decidedly in the following features. Head with eyes decidedly 

 reduced; interocular space very broad, slightly broadei* than space between 

 antennal sockets. Ocelli but weakly defined, with area in which they are 

 located not as deep as in male and rounding more evenly into interocellar 

 area. Pronotum with caudal margin very weakly angulato-produced.^^ 

 Tegmina greatly reduced, sub-rectangulate, transversely truncate at apex of 

 anal field with a weak concavity in discoidal field, distal angle on costal 

 margin broadly rounded, distal angle on sutural margin rectangulate and 

 sharply rounded, sutural margins straight and overlapping. Wings shorter 

 than tegmina, greatly atrophied, but with anterior and posterior fields still 

 defined. Supra-anal plate triangularly produced; lateral margins nearly 

 straight, very weakly and broadly concave; apex blunt but evenly rounded. 

 Subgenital plate convex, very weakly produced, with free margin weakly 

 convex except at base of cerci, where a very weak, broad concavity is 

 apparent. 



The remaining males and females from Lower California show 

 scarcely any variation in structure from those described. 



Measureme7its (in millimeters) 



S B 



° °-g ^-g °s "bS 



Key West, Florida, iype 14 3.6 4.6 12.8 3.6 



San Jose del Cabo, Lower Cali- 

 fornia 11.5 3.2 3.73" 11.1 3.1 



San Jose del Cabo, Lower Cali- 

 fornia 12.7 3.7 4.2 12.7 3.7 



9 



San Jos6 del Cabo, Lower Cali- 

 fornia, aZZo<7/pe 12.3 3.7 4.6 4.1 3.1 



San Jos6 del Cabo, Lower Cali- 

 fornia 11.4 3.7 4.3 4.8 3 



San Jos6 del Cabo, Lower CaU- 



fornia 11 3.4 4.1 3.9 3.1 



^'^ The Lower Californian series is certainly conspecific with the Floridian 

 example; no other species of the group is known from these extremely different 

 and widely separated regions. It is possible that the alcohoHc series has been 

 incorrectly labelled. 



^ This condition apparently accomi)anies the tcgminal reduction found in 

 this sex of the present species. See footnote 19. 



^^ Shrivelling, due to drying after immersion in alcohol, has caused some 

 reduction in this dimension in a number of Lower Californian specimens. 



