OF WASHINGTON. 333 



2,500 to 3,000 feet. It gives me great pleasure to dedicate this 

 beautiful beetle to my friend Mr. Klages, especially as the hard 

 ships resulting from the trip to its habitat nearly cost his life, and 

 it is the best of the few things taken there. 



Tetracha lacordairei Gory. 



One specimen taken while digging in a cornfield near Ciudad 

 Bolivar about the middle of June. 



Tetracha affinis Dej., var. smaragdina "Thins. 



Found on sandy roads quite distant from any water. At Ciu 

 dad Bolivar during June and July, and at Suapure in May and 



Juiyi 



Tetracha sobrina Dej., var. sommeri Chd. 



Found in damp places along the margin of a stream near Ciu 

 dad Bolivar in May and June. 



This species is one of the most variable of the genus ! Only 

 " geniculata Chev." and " ignea Bat." are now noted in the cata 

 logues as varieties of Tetr. sobrina Dej. ; but after a careful study 

 of the relationships of the " closely allied" forms, I now believe 

 that the following are but varieties of the same species : 



Tetr. sobrina Dej. subspecies punctata Cast. 

 " confusa Chaud. 



" infuscata Mann. 



longipennis Chaud. 



As regards T. Chevrolati Chaud., it is quite distinct from 

 subsp. infuscata Mann, and belongs to the varieties of T. Caro 

 lina L., as does subsp. chiliensis Brll. and var. Latreillei Cast., 

 var. splcndida Dokht, etc. 



Tetracha mellyi Chaud.* 



Found on the dry, sandy borders of a stream near Ciudad Boli 

 var during May and June, and occasionally came in to the light. 

 Some of the latter show a coppery coloration somewhat like in 

 T. fulgida King, and have the last two abdominal segments 

 with the border of the preceding two yellow. The sixth ventral 

 segment is emarginate in the d\ but the emargination is not 

 rounded in front as it is in the commoner variation, which also 

 differs in having the last four ventral segments pale yellow. 



Cicindela suturalis F., var. helvaea Klug. 



A very active species found during the hottest hours of the day 

 along the sandv margin of a stream near Ciudad Bolivar from 

 March to the middle of June. 



* I am not quite sure if this form is really only one of the varieties of 

 T. fulgida Klug. In regard to the sculpture of the elytra, it may prove to 

 be a separate species. 



