2G0 NORTH AMERICAN FAUNA. [So. 



DESCRIPTIONS OF NEW SPECIES OF ORTHOPTERA FROM THE 

 DEATH VALLEY EXPEDITION. 



By Lawrence Bkuner. 

 Ameles sp. 



Possibly new, but the specimen is in too bad a condition to be described, it having 

 been broken while en route in the mail, besides being immature. This same insect 

 has been examined by me on several former occasions. It appears to be quite widely 

 distributed in the arid and semiarid regions of the Southwest, as I have it from 

 various points in New Mexico, Arizona, and California. I have also seen specimens 

 from southern Idaho and middle Nevada. 



Heterogamia sp. 



Like the preceding, this insect is also probably undescribed. It is a female spec- 

 imen, and can not well be characterized now. This form seems to be not at all rare 

 in some portions of Arizona and southwestern United States, and also occurs in por- 

 tions of old Mexico. 

 Tridactylus sp. 



The collection contains a specimen of an apparently undescribed species of this 

 genus, but until I have had a little more time to study these peculiar little crickets 

 I would prefer not to name it. Other specimens of the genus have been taken alonf 

 the Colorado River during the past summer, and have just lately come to my notice. 

 Nemobius sp. 



This insect may also be new. I have seen specimens very similar to this from the 

 vicinity of Los Angeles, Calif., and if represented in the collection, I can not at 

 present find it. I will not try to describe the species from the single male before me. 

 Encoptolophus pallidus n. sp. 



General color dull yellowish brown, varied with faint dusky markings common to 

 ihe representatives of the genus. Head moderately large, a little wider than front 

 edge of pronotum. Vertex about as wide as the eyes, depressed in front where the 

 lateral carina; meet in less than a right angle, these carinas bowed and approaching 

 slightly behind, but fading away into the sides of the occiput along the hind margin 

 of the eyes; the sulcus quite deep and provided with a well-defined central carina 

 posteriorly; frontal costa quite prominent above, of nearly equal width throughout 

 but slightly sulcate at the ocellus and below ( 9 ), or more deeply grooved throughout 

 ( g ) ; antennas not quite as long ( 2 ) as head and pronotum combined, or slightly 

 surpassing the latter ( $ ), a little enlarged and slightly flattened toward their tips 

 in the male; pronotum small, Avith the sides nearly parallel when seen from, above, 

 the lateral earinse well defined, but interrupted a little in advance of the middle 

 carina, not prominent, equal throughout, cut a little in advance of the middle by 

 last transverse sulcus, the hind border a little obtuse-angled. Tegmina and wings 

 of about equal length, surpassing the tip of the abdomen in both sexes. Posterior 

 femora not much inflated basally, but passing the tip of abdomen slightly in both 

 sexes. 



Color. — Male and female dull dry-grass color, marked faintly back of the eyes, 

 along sides of pronotum, on front edge of tegmina and on posterior femora with the 

 characteristic fuscous blotches and bands. Posterior wings hyaline, with the tips 

 apparently but little darker than the disk and base. Hind tibiae pale glaucous with 

 basal third pale. 



Length of body, $ , 18 n,m ., 9, 24 ■""'.; of attenme, $,l mvci ., 2,6.5"' m . ; of pro- 

 notum, $, 3.75 mm ., 2, 4.7 mm .; of tegmina, g , 15.5 mm ., ?,19 mm . ; of hind femora, 

 $, 10.5 n,m ., 2, 13 ram . 



Habitat. — Panamint Valley, Cal., April 6, 1891. 



