Oo [ Febniary, 



of the Acridiidm in being long and exserted, and its curve is more or less strongly 



marked in different genera, while sometimes {Leptophyes) the curve of the upper is 



not the same as that of the under border. The eggs are laid singly. 



The larvae change their skin about six times, and, as in all the saltatorial Orth- 



optera, have the organs of flight inverted, i. e., with their inferior borders towards 



the mid-dorsal line. 



Table of Gteneea. 



1 (4) First and second joints of the tarsi not sulcate at the side. 



2 (3) Smaller size ; elytra and wings not fully developed ; anterior coxse un- 



armed i. Leptophyes. 



3 (2) Much larger size ; elytra and wings fully developed ; anterior coxa? armed 



with spines ii. Phaneroptera. 



4 (1) First and second joints of the tarsi sulcate at the side. 



5 (6) Foramina of the anterior tibiae open ; elytra in S with no tympanum . 



iii. Meconema. 



6 (5) Foramina of the anterior tibiae cleft-shaped ; elytra in (? with a tympanum 



in the anal area (posterior tibiae above in both margins with an apical 

 spine) . 



7 (8) Anterior tibiae smooth, not sulcate at the side, with no apical spines above 



iv. Xiphidmm. 



8 (7) Anterior tibiae sulcate at the side, with an apical spine in the external 



margin above. 



9 (10) Prosternum armed with two spines v. Locusta. 



10 (9) Prosternum unarmed. 



11 (14) Anterior tibiae with three spines above. 



12 (13) Elytra and wings squamiform ; pronotum convex above .. 



vi. Thamnotrizon. 



13 (12) Elytra and wings fully developed (sometimes abbreviated) ; pronotum 



nearly flat above vii. Platycleis. 



14 (11) Anterior tibiae with four spines above viii. Dectieus. 



i.— LEPTOPHYES, Fieber. 

 This genus, witli the following one (Fhaneroj)tera) ,he\ovigii to the 

 sub-family Phaneropterid(B, and these two are distinguished from the 

 other British genera by their smooth-sided first and second tarsal 

 joints. The peculiar characteristic of Phaneroptera is the form of the 

 ovipositor, which is short, much compressed, and pointed, and has 

 some small ci'enulations near the apex. The anterior edge of the 

 vertex is narrow, the anterior coxse are not armed with spines, the 

 pronotum is smooth, and the organs of flight are ill developed. 



1.- — Leptophyes punctatissima, Bosc. 



Locusta punctatissima, Bosc d'Antic, Actcs de la Soc. d'Hist. Nat. de 



Paris, tab. i, p. 44, pi. x, figs. 5, 6. 

 Odontur a punctatissima, Fischer, Orth. Eur., p. 232, tab. xii, fig. 15. 

 Leptophyes p>unctatissima, Brunner, Prod, der Eur. Orth., p. 285. 

 Locusta autumnalis, Hagenbach, Symb., p. 25, fig. 14. 

 Barlitistes autumnalis, Charpentier, Horae Ent., p. 102. 

 Ephippiqera virescens, Steph., Maudib., vi, p. 11. 



