NO. 6 



GRASSHOPPER ABDOMEN SNODGRASS 



iiate extension projecting far beyond the origin of the palhum from its 

 dorsal lamella (fig. 35 A, B, IXSL). The exposed part of the pallium 

 (Pal) forms a thick, transversely corrugated fold against the para- 

 procts. When the tenth and eleventh segments are removed (B) the 

 genital chamber is exposed from above, and there are to be seen on 

 its floor the phallic structures lying anterior to the aedeagus, the latter 

 being still concealed beneath the pallial hood. The epiphallus consists 

 of large lateral lobes (h, h) connected by a narrow median bridge; 

 anterior processes are absent, but the posterior processes are present 



Fig. 35. — Male genitalia of Schlsfoccrca amcricana (Cyrtacanthacrinae). 



A, end of abdomen. B, dorsal view of genital lobe of ninth sternum, pallium, 

 and anterior part of genital chamber, exposed by removal of tenth and eleventh 

 segments. C, phallic organs, posterior view. D, same, lateral view. E, aedeagus 

 with apodeme, endophallus, and ejaculatory sac. F, endophallus and apex of 

 aedeagus. 



in the form of large triangular plates {k, k). Between the bases of 

 the latter the floor of the genital chamber presents a deep transverse 

 groove, the part behind the groove terminating in the basal fold {hf). 

 The aedeagus is small (C, D, Aed), but its ventral lobe {vl) is rela- 

 tively large. The principal part of the dorsal lobe is formed of the 

 usual proximal subdivision (D, E, m), the distal part (E, r) being 

 much reduced and ending in a small spoutlike terminal lobe without 

 apical processes. The aedeagal apodemes (E, Apa) are short but 

 broad at their bases. The endophallus (F) has the usual structure, 

 but has characteristic features. The phallotreme sclerites {o, q) are 



