180 THE ENTOMOLOGIST. 



hear nothing. The capture of the insects proved a matter of 

 considerable difficulty, and although, from their cries, they were 

 evidently numerous, I got only two. The attempt to find them 

 in the daytime proved futile, and the cries only commenced just 

 before darkness set in, leaving a very short time during which 

 they could be seen, after they had been detected by the ear. It 

 was almost impossible to climb into the small trees without 

 making enough disturbance to cause the insects to become silent 

 and take a leap for another branch ; for this reason hunting 

 them with a light was useless, — they would jump off into the 

 darkness and be lost. 



The Decticinse of New Mexico, so far as previously known, 

 numbered five genera and nine species. The discovery of Capno- 

 hotes at Pecos added a sixth genus and tenth species. In the 

 ' Canadian Entomologist,' April, 1897, Scudder gives a table of 

 the known species of Capnobotes, three in number. A fourth, found 

 in Mexico, was added by Mr. Eehn in 1900. In Scudder's tables 

 the Pecos species runs to C. occidentalis (Thomas), known from 

 California, Nevada, and Utah. To confirm (or disprove) the 

 identity, I asked Professor L. Bruner for measurements of C. 

 occidentalis in his collection. He kindly gave the following, the 

 average from four specimens : — Length of body, ^ 26, ? 32 ; 

 of pronotum, ^ 6*5, ? 7 ; of tegmina, ^ 41, ? 49 ; of hind 

 femora, <? 25, 2 29 ; of ovipositor, 28 mm. This agrees with 

 my specimens, which are evidently occidentalis. The male body, 

 if stuffed with cotton when fresh, is about 30 mm. long. The 

 male antennae are from 51 to 53 mm. long. One of my examples* 

 is sepia-brown in its body, markings of tegmina, &c., but the 

 other has these parts all apple-green, the pronotum with two 

 ochreous bands, edged outwardly on the hinder part by a narrow 

 black stripe. The green form may be known as var. viridis. 



In Dr. Howard's * Insect Book,' PI. xxxv, fig. 6, is a good 

 figure of Capnobotes fidiginosus (Thomas). The Pecos insect is 

 very similar, but smaller, with much less dark color on the hind 

 wings. 



Table of Capnobotes. 



Tegmina short (Mexico) tmperfectus, Kehn. 



Tegmina long 1. 



1. Outer margin of anterior femora very faintly spined 



beneath ; metazona scarcely elevated above the 

 prozona; tegmina ^ 41, $ 49 mm. ... 2. 

 Outer margin of anterior femora distinctly spined 



beneath ........ 3. 



2. Coloured parts dark brown (California to New Mexico) 



occidentalifi (Thos.). 

 Coloured parts green (New Mexico) occidentalis var. viridis, Ckll. 



- Now in the British Museum. 



