1909.] NATURAL SCIENCES OF PHILADELPHIA. 483 



The measurements of the specimen are as follows : Length of body 

 7.2 mm.; length of pronotum 3.2; greatest width of pronotum 2.8; 

 length of tegmina caudad of pronotum 1.5; length of caudal femur 4 . 3. 



At dusk and later, this insect was heard on every side stridulating. 

 It was found that the musicians were hidden at the roots of greasewood 

 bushes where they were almost inaccessible. The single specimen was 

 captured by suddenly pulling a small bush up by the roots, and luckily 

 turning the insect out of his home. The stridulation was similar to 

 that of the genus Gryllus but shriller, an incessant zeee-zeee-zeee. 

 This ceased upon approach, even when the disturber was yards distant. 



Nemobius mormonius Scudder. 



Two males and one female of this species were taken from grass 

 beside a stream at Las Vegas, Nevada, August 10. The species was 

 rather well distributed in this situation. 



Miogryllus lineatus (Scudder). 



Two males of this species were taken at Las Vegas, Nevada, August 9, 

 on an ore pile, where a colony of these were chirping incessantly. 

 The type of the species was taken between Virgin River and Fort 

 Mohave, Arizona. 



(Ecanthus niveus (DeGeer). 



A single male of this species was taken on geraniums after dark, 

 August 3, on Santa Catalina Island. Three females from Stanford 

 University, California, taken October 3 to 23, 1903, by F. Grinnell, 

 Jr., have also been examined. 



(Ecanthus californicus Saussurc. 



A single male from El Portal, taken August 30, and a female from 

 Mt. Wilson, 5,000 feet elevation, San Gabriel Mountains, taken Sep- 

 tember 19 by F. Grinnell, Jr., belong to this species. The general 

 color is pale ochraceous in the male and olive-green in the female, 

 the male having the head, except the mouth parts, and dots on the 

 pronotum red, the first and second joints of the antennae are also red- 

 dish but duller, while the third to seventh or eighth are dark brownish 

 fading distad. The female bears no red except a wash of red-brown 

 on the two proximal antennal segments, the brownish area on the 

 antennae found in the male being present in the female as well. The 

 El Portal specimen was taken at night in a tangle of bushes by means 

 of a lantern. 



