A List of the Illustrations. 
Fig. Page 
I=—Cayor fly, larvas sxe oad yaw avis oSvae Gauge eens 21 
2—Melophagus Ovinus, Adult ....................... 26 
3—Melophagus Ovinus, Pupa ....................... 26 
4—Gastrophilus Equi, Larva ....................... 27 
5—Oestrus Ovis, Larva .......... 00. ce eee eee uees 28 
6—Hypoderma Lineata, Larva ..............000.005 30 
7—Hematopinus Suis .......... 0... eee ee eae 37 
8—Trichodectes Scalaris ............. 000... e ee eee 39 
9—Trichodectes Scalaris, Ovum ............. cb Beau Sits 40 
10—Menopon Biseriatum ..................-...0005. 41 
11—Goniodes Stylifer ............0...0...... 0.0 43 
12—Goniodes Stylifer, Ovum ..................00.00.. 43 
18—Lipeurus Infuscatus .............. 0.00 eee eee 43 
14—Goniocotes Hologaster ..................02.0000- 45 
15—Lipeurus Baculus ......... Bimal ume edn cata cannes 45 
16—Sareoptes Mutans Variety Gallinac ............... 45 
17—Scaley Legs, Photograph reduced one-half ........ 55 
18—Psoroptes Communis, Variety Ovis, Male .......... 57 
19—Psoroptes Communis, Variety Bovis, Females...... 58 
20—Psoroptes Communis, Variety Ovis, Head.......... 59 
21—Psoroptes Communis, Variety Bovis, Head......... 59 
22—Demodex Folliculorum, Variety Canis, Stages of 
Developnient,. 2. sc026.6 bene sscaae sy aas ses ees 66 
23—Demodex Folliculorum, Variety Canis, Adult Males 66 
24—Red Mange, Photograph of two pups.............. 68 
25—Argas Miniatus, Larvae ........-..----0- seer eee 69 
26—Ornithodoros Megnini, Larva ..............-.++4-- 70 
27—Margarapus Annulatus, Larva ..............-+.+-. 70 
28—Dermacentor Electus, Larva ...........--.++eeeee 70 
29—Amblvomma Americanum, Larva ................ 76 
30—Spiroptera Scutata .....-....- see eee eee 90 
31—Spiroptera Megastoma ........-.-----. eee eee ees 91 
32—Spiroptera Microstoma ..........-++- cee ee renee 91 
38—Filaria Papillosa ..........-. 2-2 e ese eeeeeeee 95 
34—Asearis Megalocephala ..........---202 2-2 ee eee eee 98 
