42 ENTOMOLOGICAL NEWS. [Feb., 'O2 



lengths of the joints are very different, as will be seen from the 

 following measurements: joint (i) 32, (2) 28, (3) 40, (4) 

 16, (5) 20, (6) 68. Formula 631254. The antennae are also 

 very much smaller and, in fact, the smallest of our American 

 species. Prof. Cockerell remarks that in its marginal fringe 

 of cottony filaments R. fimbriatula resembles the New Zealand 

 R. formidcola Maskell. 



Ripersia cocker eilae n. sp. 



9- Red-brown, oval, 2 mm. long, \% broad, with two caudal cottony 

 filaments. The insect is covered with a thin coating of white powder, 

 which gives it the appearance of being a light pink color when alive. 

 After being put in alcohol it soon turns to a cinnamon brown and quite 

 translucent. Boiled in caustic potash, they turn to a dark claret color. 



Mounted specimens colorless. Legs, antennae and mouth-parts ochre- 

 ous. Mentum elongate, dimerous, thickly beset with short, fine hairs. 

 Antennae seven jointed, short, not stout. Joint seven is longest, then 

 one, two and four next and equal, then six, which is very little larger 

 than 5. Joint three is the shortest. Formula : 71(24)653. All of the 

 joints have several short hairs. Measurements of the antennal joints : 

 (i) 40, (2) 36, (3) 24, (4) 36, (5) 28, (6) 32, (7) 64. 



Front leg ordinary, with the coxa 96 long. Femur, with trochanter, 

 180 ; tibia, 132 ; tarsus, 72 ; the width of coxa, 84 ; trochanter, 64 ; tibia, 

 28 ; tarsus, 28. The claw is 28 long and decidedly thinner than in any of 

 the genus known to me. As to the digitules of the tarsus and claw, I 

 was unable to find these. If these are present in this species they must 

 be very minute indeed. Anal ring normal, with the usual six hairs and 

 not very long or stout. Caudal tubercles with one not very long bristle 

 and two short spear-shaped spines and several short, thin hairs. 



Hab. In nest of Lasius americanus Em., at Beulah, Sapello 

 Canon, New Mexico. Altitude, 8000 feet. This is the high- 

 est altitude where a mealy bug has been known to live. Found 

 by Mrs. and Prof. Cockerell, and named after Mrs. Cockerell, 

 who was the first lady to write to me on a biological subject. 

 The species is easily known from R. kingii Ckll., to which it 

 is most allied, by its antennae of seven joints, with the third 

 shortest ; by the leg, which has the tibia and tarsus much 

 shorter and both equal in width ; the very thin, sharp claw, 

 the central loop being much thinner and shorter and the mentum 

 well covered with short, fine hairs. 



Pheiiacoccus simplex n. sp. 



9. Oval in shape, 3 mm. long, 2 broad, of a reddish-brown color. 



