6 Dr. LichTENSTEIn's Dijertation on two Natural Genera 



family it is marginated, and in the fore part extended more or lefs iu 

 breadth, but behind hnear. 



The abdomen in the Phafmata differs in different famihes. Thofe 

 of the firft family have a rounded cylindrical abdomen, of ten nearly 

 equal divifions, which, within its trifoliated extremity, contains a tail 

 in which the parts of generation are concealed. The fecond family 

 has the abdomen prefTed flat, often even membranous, without any 

 leaflets at the tail. In the Mantes the abdomen is very various, but 

 always agrees with the charader of the family. 



The hemelytra of the Phafmala are often entirely wanting; when 

 prefcnt they are membranous ; in the firft family, efpecially in the 

 males, they are very fhort, taper at the bafe, and toward the middle 

 furnifhed with a fmall thorn, which is fometimes blunt, fometimes 

 fliarp. In the females they are moftly half as long as the wings, round- 

 ed off towards the tips, ribbed, and without thorns. In the fecond 

 family the males have fhort and very narrow lancet-formed heme- 

 lytra ; thofe of the females are broad, veined, and nearly of the length 

 of the abdomen. 



The Mantes have tranfparent thin hemelytra, with a broad, mem- 

 branous, often grooved rib at the outer margin; which are feldom 

 fhorter than the wings or abdomen. 



The wings of the Phafmata are broad, inwards plaited and tranf- 

 parent, with a broad membranous rib at the outer margin, and 

 fhorter than the abdomen. In fome fpecies of the firfl: family, and 

 in the female of the Phajma /iccifolium, which is of the fecond fa- 

 mily, and has very large and broad hemelytra, they are entirely 

 wanting. 



The Mantes have tranfparent, often colourlefs wings, more finely 

 plaited, with only a narrow rib at the outer margin, and nearly of the 



length 



