402 Mr. T. D. A. Cockerell on 



The last six antennal segments measure thus in fi/j. : — (3) 199, 

 (4) 182, (5) 140, (6) 124, (7) 116, (8) 232 ; there is a hyaline 

 process at the end of the eighth segment. 



Larva. — Pale yellow, covered with white lamella?, which 

 form a high and thick dorsal crest, covering the back ; the 

 lateral lamella? are also well developed, with an especially 

 long one at each corner. 



Hah. On leaves of Garri/a, Dripping Spring, Organ 

 Mountains, New Mexico, middle of August, 1898 (Ckll. and 

 JosS Mendoza). The females were producing young. 



0. garryai is a very distinct species, remarkable for its 

 green colour, high dorsal crest, and the very long tibia. The 

 Garrya is a tall shrub ; 1 find it in the herbarium of the 

 N. M. Exper. Station labelled U G. ovata, var. Lindheimeri" 

 but it cannot well be that, having glabrous leaves. It agrees 

 with the description of G. Wrightii, Torrey. 



Orthezia monticola , sp. n. 



? (adult). — Length about \\ millirn., with ovisac 4 millim. 



Body rather pale brown, legs and antenna? dark chestnut- 

 brown. Dorsal surface naked, except for a very little mealy 

 powder, and two median rows of small white waxy tufts ; 

 lateral lamella? rather short ; caudal lamella? fairly long, about 

 equal in size. Ovisac broad, not curled upwards, dorsally 

 with the usual longitudinal ridges. Antenna? 8-segmented, 

 the eighth with a little hyaline elongate-conical process at the 

 end. The antennal segments, measured in fi/jb } are as 

 follows :— (1) 133, (2) 99, (3) 116, (4) 99, (5) 99, (6) 83, 

 (7) 75, (8) 149 ; formula 8 1 3 (2 4 5) G 7. The legs, mea- 

 sured in fifi, are thus: — coxa 149; femur + trochanter 514 ; 

 tibia 514 ; tarsus 282 ; claw 66. 



Hah. At roots of grass, Dripping Spring, Organ Moun- 

 tains, New Mexico, middle of August, 1898 {Ckll.). The 

 locality is about 5600 feet above sea-level. 



0. monticola differs from 0. graminis, Tinsley, by its 

 smaller size and much shorter ovisac and the arrangement of 

 the dorsal secretion in two lines with a dark space between. 

 From 0. nigrocincta, Ckll., it differs again by the two sepa- 

 rate lines of white dorsal tufts, and also by having the ridges 

 on the ovisac weaker, but sharper, and not quite so numerous. 

 From 0. insignis, Dougl. (which is a tropical insect), it 

 differs by the dorsal stripes of waxy secretion being hardly 

 divergent at the middle, and the tufts composing them, espe- 

 cially the anterior ones, being thicker and longer, whereas in 

 insignia the secretion is reduced to fine lines. 



