LIST OF ILLUSTRATIONS 



117. 



Larva of May-fly {Ephemerida), to show the lateral tracheal 



e-ills X 8 Anal cerci cut short .... 



Caudal tracheal giU-fin of larva of an Agrionid Dragon-fly, 



119, 

 120 



Larva of Alder-fly {Sialis), x 4 . 



Rostrum and appendages of a Tick {Amblyomma 

 splendidum), x 28, the left half of the hypostome removed 



121. Rhipicephalus sanguineus, m^\e,ve.n\.ra\v\t'fi, x 15 



122. harva oi a. I/amapkyst/h's, x 55 



123. Fowl Tick {Argas persicus\ x 9 



124. Omithodorus moubata, x 6 . 



125. l^arva oi Omithodorus moubata, x 25 . 



126. Dermanyssus from Fowl, distended with blood, x 32 



127. Pedipalp of a Velvet-mite (7>i£i»?&Vzy(fe), x 10 



128. Female Itch-mite, ventral view, x 100 



129. Female Sugar-mite {Glycyphagus), x 55 



130. Scorpion, ventral view .... 



131. Leg of Scorpion, slightly enlarged 



132. Lathrodectushasseltii,aV&ciomousSi'p\AM, x 3^^ 

 I'i'^. Porocephalus, aA\i\\.ievaa\e 



134. Female Cyclops, with egg-sacks, x 30 



135. Branchipus, male, slightly enlarged 



136. Gammarus pulex, x 3J . 



258 



259 

 260 



270 

 276 

 277 

 280 

 283 

 283 

 287 

 287 

 291 

 291 

 295 

 29s 

 300 

 302 



313 

 316 

 322 



Figures i, 2, 3, 9, 10, 11, 14, 15, 17, 27, 30, 31, 33, 34, 35, 36, 47, 71, 82, 92, 93, 

 98, 99, 102, 104, 105, 107, 109, III, 113, 135, drawn by Dorothy Glover. 



