ABBREVIATIONS USED ON THE FIGURES 

 (Other lettering explained in the legends.) 



aChS, anterior cheliceral sheath. 



An, anus. 



Ant, antenna (lAnt, 2 Ant, first and 



second antenna). 

 Ap, apodeme. 

 Atr, spiracular atrium. 



Br, brain. 



cAp, coxal apodeme. 



Chi, chelicera. 



ChlB, cheliceral base. 



chlF, cheliceral foramen. 



ChS, cheliceral sheath. 



Cp, carapace. 



cpr, compressor muscle. 



Ct, cuticle. 



Cue, cucullus. 



Cx, coxa {IICx-VICx, coxae of pedi- 



palps and legs). 

 cxp, coxal process of pedipalp. 

 cxr, coxal ridge. 



D, back of the body, dorsum. 



Dae, dactyl, median claw of pretarsus. 



dc, dorsal channel of pharynx. 



Dct, duct. 



df, fold of dorsum over bases of cheli- 



cerae. 

 did, dorsal dilator muscles of pharynx. 

 dll, lateral dilator muscles of pharynx. 

 dlv, ventral dilator muscles of pharynx. 

 dpi, dorsal plate of pharynx. 

 dplcx, dorsal plate of pedipalp coxa. 

 dpptar, depressor muscle of pretarsus. 

 dpt, depressor tendon. 

 dptar, depressor muscle of tarsus. 

 dptb, depressor muscle of tibia. 



eAp, epistomal apodeme. 

 ceAp, epistomocoxal apodeme. 

 ecs, epistomocoxal sulcus. 

 Endst, endosternum. 



86 



Endt, coxal endite (IIEndt, IIIEndt, 

 IVEndt, coxal endites of pedi- 

 palps, first legs, and second legs). 



Epst, epistome (clypeus, subcheliceral 

 plate). 



Epth, epithelium. 



/, median frontal bar. 



jc, food canal. 



jd, immovable finger (fixed digit) of 



chelicera. 

 Fin, femur. 

 FrG, frontal ganglion. 



G, ganglion {IG, tritocerebral gan- 

 glion, IIG, IIIG, ganglia of pedi- 

 palps and first legs). 



GC, genital chamber. 



Gld, gland. 



GO, genital opening. 



HL, head lobe of embryo. 



lis, piece of skin of host drawn out in 



a papilla around the rostrum of 



ticks. 

 Hst, hypostome. 



I'l'I, postoral somites (/, cheliceral 



somite). 

 iChS, inner cheliceral sheath. 



L, leg {1L-4L, first to fourth legs). 



Ibnncl, labral muscle. 



IHcl, labral haemocoele. 



//, lamina inferior of pedipalp coxa. 



Lm, labrum ("lingula," "styletlike 



process"). 

 hud, lamina dorsalis of preoral cavity. 

 Imv, lamina ventralis of preoral cavity. 

 Ipg, lophognath. 



Is, lamina superior of pedipalp coxa. 

 Ivptar, levator muscle of pretarsus. 

 Ivt, levator tendon. 



