1. September 1900. 



M 11- 



XV. Jahrgang. 



Societas entomologica. 



..Socletas entomologlca" (gegründet 1$ 

 ausgezciclioeter Fachmänner. 



Journal de la Societe entomologique 

 internationale. 



Toutes les correspondanceB devrnnt etrc adressecs 

 aux hirltlers de Mr. Fritz Rühl ä Zurlch- 

 Hottlnsen. Messieurs les membres de la societe 

 sont pries d'envoyer des eontributions originales 

 pour la Partie scientißque du Journal. 



Rühl, fortgeführt 



Erben 



Mit» 



bedeutender Entomologen und 



Organ für den internationalen 1 Organ for the 



Entomologenverein. International-Entomological Society. 



Alle Zuschriften an den Verein sind an Herrn All letters for tho Society yre to bc directed to 

 Fritz Rühr» Erben in Zürich' HottIngren zu Mr. Fritz Rühl's inherltors at Zürich-Hot- 

 richten. Die Herren Mitglieder des Vereins wer- tingen. The Hon. members of the Society are 

 den freundlichst ersucht, Originalbeiträge für den kindly requested to send original eontributions for 

 wissenschaftlichen Teil des Blattes einzusenden. j the scientific part of the papcr. 

 Jährlicher Beitrag für Mitglieder Fr. 10 = 5 fl. = 8 Mk. — Die Mitglieder geniessen das Recht, alle auf Entomologie Bezug nehmenden Annoncen 

 kostenfrei zu inseriren. Wiederholungen des gleichen Inserates werden mit 10 Cts. — 8 Pfennig per 4 mal gespaltene Petitzeile berechnet. — Für Nicht- 

 mitglieder beträgt der Insertionspreis per 4 mal gespaltene Petitzeile 25 Cts. =30 Pfg. — Das Vereinsblatt erscheint monatlich zwei Mal (am 1. und lö.) 

 Mit und nach dem I. Oktober eintretende neue Mitglieder bezahlen unter portofreiem Nachbezug der Nummern des Winterhalbjahres 

 nur die Hälfte des Jahresbeitrages. 



Notes on sotne Cicindelidae from the Southwestern 

 United States. 



By H. F. Wichham. 



The followiug remarks apply to species of tiger 

 Iieetles captured duriiig the summer of 1899, while 

 on a coUecting trip through the arid regious of the 

 southwestern portion of the United States of America. 

 The Stretch of couutry visited, embraces a part of 

 three status — Texas, New Mexico and Arizona — 

 and white characterized by a very light rainfall 

 through most of the year, is nevertheless traversed 

 by several streams of fair size, the largest of which 

 is the Rio Grande. The valley of this river is quite 

 broad in some places and occasionally marked by 

 alkaline or saline marshes and broad mud-flats which 

 are much frequented by Cicindelae. In its course 

 from Del Rio to El Paso, the Southern Pacific rail- 

 road Grosses a high moutaiuous divide, and in this 

 hilly region several forms of Cicindela occur which 

 are not to be met with in the lower Valleys. I sub- 

 join a few notes or the habits of each species noticed 

 during my trip. 



Tetracha Carolina Linn. A beautiful golden- 

 green beetle with yellow-tipped elytra and pale legs. 

 It was frequently seen at street laraps at Del Rio, 

 New Braunfels, El Paso in Texas, and at Tucson, 

 Arizona. During the day it hides under any con- 

 venient shelter near the banks of streams or ponds 

 aud may be found by turning over drift-wood or 

 slabs of dried niud. It do^s not fiy when disturbed 

 but is a very swift runner. 



Cicindela obsoleta Say. This magnificent insect 

 is of a velvety black color, in its typical form, and 

 is the largest of our uative tiger beetles. I found 



it at Alpine, Texas, during juue and july, chiefly 

 on broad flats of bottora land used as pasture. It 

 lurks in dry spots to leeward of some clump of 

 bunch-grass, keepiug a close lookout for victira or 

 for fffi. Readily alarmed, it rises quickly if disturbed 

 and makes off with a long sustained flight which 

 renders it difficult of capture. A green form (Cicin- 

 dela prasina Lee), frequents the same situations 

 aud may be found in immaculate and spotted varieties 

 aH runniiig together. These green ones are quite as 

 wild and as readily startled as the black, and hard 

 to approach, even with the greatest cautiou. One of 

 them took three flights in trying to escape, which 

 aggregated 140 paces about 420 yards. Occasionally 

 thoy fly almost streight up into the air for several 

 yards and then suddeuly strike off in a long swift 

 flight parallel with the ground surface but high above 

 it, until lost to view. Owiug to its size it is a most 

 formidable foe to other insects. I saw one specimen 

 catch au individual of Cicindela nigrocoerulea which 

 it was apparently about to devour wheu I threw my 

 net over both. 



Cicindela nigrocteruiea Lee. This was seen 

 chiefly ou low, rather damp ground among short 

 grass which fringed the edges of uearly dry water 

 courses. It was much less difficult to approach than 

 C. obsoleta, and its flight was of short duration. 

 But it was awkward work catchiug them, for they 

 usually ran out under the rim of the net instead of 

 flying up into it and the short Vegetation aided iu 

 their escape. I met with the species at Alpine and 

 Marfa in Texas and at Deming, New Mexico. Ä 

 green form was the most abundant although a few 

 blackish-blue individuals were takeu. 



