196 NORTH AMERICAN MELANOPLI (ORTHOPTERA) 



out, or just under it (from behind) to work it upward, thus 

 stretching the membranes at the base of the penis to their full 

 extent. The chitinous pseudosternite lies across the anal cham- 

 ber proximad and is then sometimes visible, but to see both its 

 dorsal and ventral processes the dissecting needle must be driven 

 down behind it and then forward under it. By working this 

 needle carefully so that it pushes against the pseudosternite from 

 below, that organ may be slowly forced upward and slightly 

 caudad, when it will rotate suddenly dorsad, exposing both its 

 dorsal and ventral processes. It may then be left resting across 

 the top of the large proximal portion of the ninth sternite, just 

 beyond the apices of the epiprocts and supra-anal plate. Though 

 these normally concealed organs are thus left in an unnatural 

 position, I prefer this method to dissecting them out entirely. 

 Such very small parts, if mounted on a slip with the specimen 

 or separately, are easily lost or misplaced. 



These parts of the male genitalia are mainly named in con- 

 formity with R. E. Snodgrass, 26 but I have used " penis " in- 

 stead of " aedeagus " and " pseudosternite " in place of " epi- 

 phallus " in conformity with the first important study of these 

 structures by E. M. Walker 27 and HubbelPs Revision of the 

 Puer Group of the genus Melanoplus and recent Monograph of 

 the Ceuthophili. 



Aptenopedes aptera simplex new subspecies (PI. XIV, figs. 1 to 3.) 

 This race is as yet known only from near the Atlantic Coast 

 just south of the St. Johns river in northeastern Florida, the 

 present series having been reported as aptera by Rehn and 

 Hebard in 1907 and 1916. No adult males have been secured 

 in extreme southeastern Georgia, so that although Rehn and 

 Hebard reported the species from St. Marys and Cumberland 

 Island, the race represented can not yet be determined. 



The development of the dorsal lobe of the penis affords much 

 the most striking character to distinguish the present race. 



Type. — 8 ; Pablo Beach, Florida. August 11, 1905. (Rehn 

 and Hebard). [Hebard Collection, Type No. 1292]. 



26 Smithsonian Misc. Coll., cxiv, No. 6, (1935). 

 " Ann. Ent. Soc. Amer., xl, pp. 1-76, (1922). 



