1919.3 211 



Dr. G. A. K. Marshall, Director of the Imperial Bureau of Ento- 

 mology, has very kindly given me much assistance in the matter. Where 

 only one specimen of a species has been collected or where information 

 concerning the habits, life-history, etc., is lacking I have given the 

 locality of collection. 



CiCINDELIDAE. 



Odontochila chrysis Fabr. — Yarakita, N.W. District. 



O. marginefjutta Dej. — Occurs in high grass and readily takes to 

 flight. Botanic Gardens, Georgetown. 



O. hatesii Thoms. — This species appears to use its wings more than 

 its legs. Common in some interior districts. 



O. cayennensis Fabr. (hipiinctata Fabr.). — Tumatumari, Potaro R. 



O. cliiriquana Bates. — Upper Mazaruni R. 



Cicindela hehraea Kl., var. — A maritime species. Common on the 

 sands of the foreshore in vicinity of Georgetown. Very difficult to catch 

 owing to its quick erratic flight. 



C hemichrysea Chevr. — Issororo, N.W. District. 



Caeabidae. 



Pheropsophus aequirioctialis Linn.— A common species espeeiall^^ in 

 the interior. On being violently disturbed it ejects, with some force 

 from the anal extremity, a small cloud of liquid which in contact with 

 the human integument produces a dark brown stain very difficult to 

 remove. A strictly nocturnal species ; during the day it lurks beneath 

 stones and logs of wood, sometimes in small communities 



Tetragonoderus variegatus Dej. — From dry sandy foreshore. Suddie, 

 Essequibo. 



Agridia guyanensis Chaud. — At artificial light. Issororo, N.W.D. 



Lia sellata Dej.- — Agatash, Essequibo R. 



Leptotrachelus dorsalis Fabr. — Botanic Gardens, Georgetown. 



Dytiscibae. 

 Megadytes giganteus Cast.- -Georgetown. Xot a common species. 

 M, laevigatus Oliv. — Paraweeka Creek, Essequibo R. 

 M. fraternus Sharp. — Georgetown. Frequently attracted to arti« 

 iicial lights. 



TTiermonectes marghiegHttattts Aube, — Georgetown. 



