﻿98 



NINTH ANNUAL KEPORT 



{Staphilinidce) found feeding on the eggs, and they prove to be 

 newly-hatched specimens of the above Harpalus larva. 



It is probable that most of the Carabid aivas will feed on the 

 eggs, and I introduce the figure of a larger species (Fig. 26) and its 

 probable parent, the Pennsylvania Ground-beetle {Harpalus penn- 

 sylvanicris De Geer, Fig. 27"). 



Insects which destroy the active Locust. — In addition to the many 

 animals enumerated in previous reports, which destroy this locust, 

 the Box-turtle may be mentioned, and Mr. Gaumer has found a large 

 burrowing spider (doubtless a Lycosa or Mygale) to feed upon it. He 

 has also examined several specimens infested with hair-worms, one of 

 which was 18^ inches long. I have myself taken a specimen %\ inches 

 long, which proves, upon comparison, to be our commonest species, 

 Oordius aquaticus. Mr. H. A. Brous, who, while in 

 Western Kansas last Summer, made careful notes of 

 everything he observed relating to the Rocky 

 Mountain Locust, has sent me a number of insects 

 found preying upon it that had not before been 

 observed at such work. Among them are various 

 Asilus-fiies*, and several Ground-beetles and Tiger- 

 beetles. f More particulary noteworthy among these 

 last is that large and most elegant dark-brown species 



Pennsylvania " 



gkound-beetle. which I herewith figure (Fig. 29), and which has been 

 esteemed as a great rarity among Coleopterists. Mr. Brous found it 

 much more common than it was generally supposed, and attributes its 

 [Fig. 29.] reputed rarity to its secretive 



and nocturnal habits. It lives 

 in holes in clayey banks, and 

 issues in search of food only' 

 at night or early morn. Of 

 Heteroptera, there is a Sol- 

 dier-tug of the genus Apio- 

 merus and allied to crassipes ; 

 and of Hymenoptera there 

 are two Ichneumons — a Com- erax bastardh. 

 poplex and Ephialtes 7iotandaCre%% — that were^ 

 noticed pursuing the locusts, and are possibly 

 parasitic upon them. The Preying Mantis {Man- 

 amblychila cylindriforsiis. lis Carolina.^ Rep. 1, p. 169) has been also ob- 



• Stenopogon consanguineus Loew. , a species with pale yellowish hairs on head and thorax, yel- 

 lowish-brown 'winj?s and pale rufous legs and abdomen; Promachm apivora Fitch; Erax Baslardii; 

 several allied species of Erax, and a sjjecies of Tolmcrus. 



f Pasimacli'is clongatm Lee; P. punctiilatus Hald.; Calosoma obsoletum Say; Cicindela pulchra 

 Say; C. scuteUaris Hay; C. (i-guttataVa,hr.; C. fulgida Say ; C . vulgaris Say ; C. circumpiclahai'.; C. 

 /orOTOso Say; C. punctulata Fa,bT. 



