254 



olive trees infested witli Lecanium oJece. j.ii company witli Mr. Gooi)er, 

 Mr. Scott, and Dr. H. SLdebotliam, who lias charge of this ranch, I ex- 

 amined a large number of the trees where these imported insects had 

 been liberated, and together atc succeeded in finding about fifty-four 

 adults, twenty pupae and three larvae of Orciis australasice; thirty adults 

 and eight pup?e of Orcus clialyheus; and about nine adults of the Ehiz- 

 obius. Xo trace was found of the Thalpochares, and both Mr. Cooper 

 and Dr. Sidebotham informed me that they have not been able to find 

 this insect in any of its early stages. 



This completed my examination of the insects sent over from Aus- 

 tralia to Messrs. Cooper and Lelong by Mr. Koebele. Besides at Los 

 Angeles, Orcus clialyheus is also established at Santa Barbara; and 

 Orcus australasice and the Ehizobius at Santa Barbara and Alameda. 



THE GENUS DENDROTETTIX. * 



By C. V. EiLEY. 



At the meeting of the Entomological Society of Washington, June 

 2, 1S87, I loresented specimens of a tree-inhabiting locust which I had 

 studied in all stages in Missouri, and for which I proposed the new genus 

 Dendrotettix and the si)ecific name quercus. I promised to describe the 

 species at some future meeting, but pressure of other work has hitherto 

 prevented my doing so, though the manuscrixit name I then proposed 

 has been used and referred to on several occasions. At a subsequent 

 meeting I exhibited specimens from Washington County, Tex., hai-ing 

 a similar habit and belonging to the same genus, and which I pro- 

 posed to characterize as I), longipennis. This name has also been 

 used in print, and I therefore take the present occasion to present a 

 characterization of the genus and a description of the latter species, 

 more particularly because Mr. Lawrence Bruner has now issuing from 

 the U. S. Department of Agriculture a bulletin in which he wishes to 

 quote the description. , 



DEXDKOTETTIX. gen. UOY. 



Head moderately large, the face less receding th.an in Caloptenns, the occiput 

 ascending less and more depressed between the eyes and between the antennse, 

 giving greater prominence to the median ridges: more deeply sunken into the flar- 

 ing anterior edge of the pronotum: fastigium moderately depressed in the 9 and 

 more distinctly so in the ^ ; rather deeply sulcate; lateral carina? cj^uite prominent, 

 somewhat approaching between the upper extremities of the eyes and also in front, 

 where they are continuous with those of the frontal costa which is shallowly sul- 

 cate until just below the ocellus where it suddenly becomes much narrower and 

 superficial, gradually fading away; eyes ordinarily more prominent and bulging 

 than in Calojitenus. Pronotum quite broad, slightly narrowed at anterior third, 

 "widened posteriorly; posterior margin nearly straight or slightly rounded, with 

 a very sHght excavation at the median ridge ; front margin extending over the occi- 

 put; the transverse impressed lines are deep, distinct, and continuous, the anterior 



*Read by title before the Entomological Society of AVashington. March 9, 1S92. 



