ILLUSTRATIONS. 



[Roman numerals, in capitals, refer to number of bulletin,' 

 ACARINA. 



Argas americanus, V, pi, iii, lig. 8. 

 Bdellasp,, XIV, 104. 

 Boophilus bovis, V, pi, iv, pi. v. 

 Bryobia pratensis, IV, 51. 



• larva, IV, 52. 

 Cheyletussp., XIV, 104. 

 Chorioptes synibiotes, V, 265. 

 Demodex folliculornm, V, 274. 

 Dermacentor americanus, V, 260. _ 

 Dermanyssus gallinpe, V, 254. 

 Iphia ovalis, XIV, 104. 

 Ixodes ricinus, V, 262. 

 Leptus americana, V, 252. 



irritans, V, 252. 

 Lingiiatula rhinaria, V, 275. 



serrata stage, V, 275. 

 Myobia musculi, V, 264, 

 Myocoptes musculiims, V, 265. 

 Oppia jiilosa XIV, 102. 

 Oribatellasp., XlV, 102. 

 Oripoda elongata, XIV, 102. 

 Ornithodorus americanus, V, pi. iii, fig. 2. 

 Pediculoides ventricosus, X, 17; XIV, 103. 

 Psoroptes communis, V, 267. 

 Rhiphistoma leporis, V, 261, 

 Rhynchoprium spinosum, V, })1. iii, fig. 1. 

 Sarcoptes mutans, V, 273. 



side view, V, 273. 

 scabiei, V, 269, 



legs, V, 270. 

 mouth parts, V, 270, 

 burrow, V, 271. 

 Tetranychus bimaculatus, adult, XXVII, 36. 

 ^- palpus, XXVII, 36. 



claws, XXVII, 36. 

 Troml)idium loeustaruin, eggs and larva, XXX, 22. 

 larva and adult, XXX, 23. 

 Tyroglyphus longior, IV, 100. 

 siro, IV, 101. 

 sp., XIV, 103. 



