Fig. 43.— 0. cmirlmanni, sliowing a black exudation fr 



larva of a cactus weevil, Gerstcecleria niibiJis (see Fig. 40) 



Photo.. JUirciiu oj E}i1oiliolorii/. Drpt. Aq rimlt nrr , r.S..i. 



om some of the areoles, due to tlie presence of the 





Plioto., llurcdu oj liiitoinoloijii. Dipt. Agriculture, U.S..i. 

 Jig. 44. —Wild Cocliineal— Coff«s ronfus^t.s— on an Opuntia. The greyish appearauco of souie parts of the 

 segments is due to attacks by a cactus bug, ClwUnuh'a vHtiycra. 



