JOURNAL OF ENTOMOLOGY AND ZOOLOGY 181 



mm., I, 0.025 mm. ; V, 0.025 mm. ; VI, 0.024 mm. ; making the total 

 length 0.225 mm. The following variations have been noted : 



III, (IV, II, VII), I, (V, VI) 

 III, VII, (IV, II), I, VI, V 

 III, IV, II, (I, VII), V, VI 

 III, (IV, VII, II) I, (V, VI) 



Legs (Fig. 2, A) large with few stout spines. Femora always 

 longer than the tibiae. Comparative lengths of the tibiae and 

 tarsi variable. Without considering the claw, either may be 

 longer or they may be coequal. With the claw, the tarsus is 

 always longer. The claw (Fig. 2, C) is only slightly curved 

 and has a very small but distinct denticle on the inside near the 

 tip. Digitals are long with large knob. Anal lobes (Fig. 2, E) 

 distinct with long spine and four short stout spines on each. The 

 eight circumanal spines are less than half as long as the long 

 spines on the anal lobes. 



Habitat — Nacon Chico, Sonora, Mexico. 



Host — Reported on "Chino". As this is the Spanish word 

 for quinine the plant probably belongs to the genus Cinchona. 



Collector— Taken by Prof." C. H. T. Townsend May 1, 1911, 

 and sent by him to Dr. T. D. A. Cockerell, who kindly forwarded 

 the material to the writer. The species is named after Dr. 

 Cockerell, who has on numberless occasions rendered valuable 

 aid to the author's work on scale insects. 



