Mites Injurious to Domestic Animals. 63 



between the barbules of the feathers of birds or more rarely make 

 their way into the interior of the quills. The special nymph (Hypo- 

 dectes, fig. 18) of certain forms (genus Falculifer) penetrates into the 

 subcutaneous tissue of the pigeon, flamingo, and other birds. These 



FIG. 50. 



(a) Demodex canis. var. ovis (p. 84), ? , from below, x 456. 



(b) Capitulum of same, from above, (c) and (d) Demodex phylloides 

 (p. 82), 9 (from pig), dorsal and ventral aspects, x 378. (e) Demodex 

 cati (p. 86), <J , from above, X 566 (After Hirst, Studies on 



Acari, no. 1.) 



nymphs have also been found in large numbers in the thymus of 

 pigeons both in Europe and North America. 



The anterior legs in the genus Megninia are characteristic, being 

 armed with large spines (see fig. 19). One of the species of this 

 genus (M. cubitalis, Megnin), which has the posterior lobes of the 



