Locust being the name used in Holy writ I have retained it 

 in preference to that adopted by most authors. The history 

 of these destructive insects is too well known to require repe- 

 tition here ; it is evident from the dissection of the mouth that 

 its mandibles are admirably adapted for cutting herbage, and 

 its lips and maxillae for forming a large inclosure to retain its 

 food whilst it is eating. 



Upwards of 20 species have been found in this countiy, which 

 I shall enumerate, as many of the names in the Guide have 

 been superseded by the appearance of Zettersted's and Char- 

 pentier's works. 



1. Christii Curt. Brit. Ent.pl. 608. ? . 



Pea-green, antennae sub ferruginous; an ochreous and purplish longitudinal 

 line behind each eye, face with 2 lines down the middle and the man- 

 dibles blue-black : thorax triangular behind, with a sharp convex carina : 

 abdomen reddish-brown marbled with greenish-yellow : elytra more or 

 less spotted, nervures reddish-brown, variegated with green towards the 

 base : wings delicate yellow inclining to green, the apical portion more 

 grey, nervures brown and piceous, reticulations ochreous : hinder legs 

 pale green ; thighs blue internally beneath, with a large black space from 

 the base to the middle, a blackish band beyond it and a ring near the 

 apex, which is brown above : spines of tibiffi tipped with black; tarsi grey. 

 This differs so materially from the specimens oiL.migratoria 

 I have received from Germany, that I consider it to be a di- 

 stinct species, and have therefore named it after Wm. Christy, 

 Esq., who took it upon some French-beans in a garden on the 

 Clapham-road in July 1826, and very handsomely added it to 

 my cabinet. Independently of the wide difference in colour, the 

 thorax is not of the same shape as L. migratoria^ the carina 

 forms a depressed arch and is rather more pointed behind. 

 Another specimen, captured last September at Ardmore in the 

 county of Waterford by Miss M.Bali, has been obligingly trans- 

 mitted to me for my inspection by Robert Ball, Esq. of Dublin: 

 it is of the same sex as the one figured, but the elytra are much 

 more spotted. 



2. migratoriaimw. — Don. 8. 3. flavipes Gmel. — ^am. jpl. 4. 

 270. f.\9. 



4. •sr\r\6.\x\a,Linn. — Sota. B.M. 5. aprica Ste. 



6. dorsata Zett. [pi. 73. 7. parallela Zett. 



8. miniata Charp, 9. lineata Panz. 33. 9. 



10. rhomboidea Scha;/.? 11. elegans Charp. 



12. bicolor Charp. 13. rufipes Charp. 



14. biguttula Linn. 15. moUis Charp. 



16. varipes iS/^. 17. rubicunda<Szf^.-Z)ow.3.79.2? 



18. venosa Linn. ? 19. haemorrhoidalis? Charp. 



20. tricarniata Ste. 21. parallela Zett. longicornis 



Hage. 

 22. montana Charp. 23. Tpedesix'is Linn.-Panz. SS.S. 



The Plant is Bhynchospora alba. White-headed Rush-grass. 



