THE CANADIAN ENTOMOLOGIST. 301 



SOME COCCID^ FROM THE GRAND CANON, ARIZONA. 



BY T. D. A. COCKERELL, BOULDER, COLORADO. 



Mr. E. Bethel, when recently visiting the Grand Canon, was so good 

 as to collect some Coccidœ for me, and the species prove so interesting 

 that they are herewith recorded : 



1. CeroJ)lastes irregularis Ckll. — In quantity on Atriplex, July 22 



2. Orthezia garryce Ckll. — On Feiidlcra, July 21. Previously known 

 only on Garry a, from a single locality in New Mexico. The following 

 notes are based on the Arizona material : 



Pale pea-green ; last antennal joint very slender, dark ; first joint 

 narrow, bent ; legs very long ; skin densely spiny as usual. 



Measurements in microns : Middle leg, femur and trochanter, 800 ; 

 tibia, 832 ; tarsus (without claw), 384. 



Antennal joints : (i) 176, (2) 128, (3) 192, (4) 192, (5) 160, (6) 120, 



(7) 120, (8) 192-208, or counting apical spine, 208-224. 



3. F/iefiacoccus betheli, n. sp. (possibly subsp. of P. cockerelli King). — 

 On Anielafic/iier, July 21. Adult females solitary on twigs; hemispheri- 

 cal or nearly ; about 4 mm. long, 2 3^ broad^ a little over 2 high; dark 

 raspberry-red, covered dorsally with white mealy secretion in small tufts, 

 like a deposit of alkali on the soil, the surface more or less visible between ; 

 short, thick irregular marginal tufts. On boiling in KHO, turns the 

 liquid red. Legs and antennae extremely small, as also are the mouth- 

 parts ; legs slenrder, claws with a very distinct inner tooth. 



Measurements in microns : Middle legs, femur and trochanter, 165 ; 

 tibia, 118 ; tarsus (without claw), 63. 



The same measurements for hind leg are 175, 125, 70. 



Antennal joints : (i) 33, (2) 48, (3) 45, (4) 18, (5) 38, (6) ^t,, (7) 7,2>, 



(8) 35> (9) 53. 



Larva pale yellow, elongate oval, 560 /x long and 240 wide, of the 

 ordinary Pseudococcine type ; antennal joints in /x (i) 20, (2) 23, (3) 20, 

 (4) 18,(5) 18,(6)60. 



Related to F. cockerelli King, but peculiar for the very short fourth 

 antennal joint, and in spite of the rather large size of the insect, the very 

 small legs. It may be only subspecifically distinct, but no intermediates 

 are known, and it has the aspect of a distinct species. The first three 

 antennal joints are like those of P. rubivorus^ but not so the others. 



October, 1912 



