1(')G 



led up to it^ British Veterinary Officers have collected much 

 information. Nor must we forget the Italians whose Veterinary 

 periodicals since the occupation of Massowa have contained 

 articles on this important subject and whose labours have cul- 

 minated in the excellent work of Professor Luigi Lombardini, to 

 which we are much indebted. The author of the present book 

 has endeavoured to collect, condense, and arrange all previous 

 knowledge of this subject. 



ArPENDix VII. — Megnin in his Monographie de la Trihu des 

 Sarcoptes pmn'q7iei>, Paris, 1877, describes the sarcoptes of the 

 camel. 



Female : 0-o2 — 0-36 mm. long by 0-25 — 0-27 mm. broad. Bod;/ 

 vcllowish-white, ovoid in form and Avith a fairly regular margin, 

 l)ut liaving a little behind the posterior limbs thi-ee or four sharp 

 spines, some hairs about here run out transversely and some longi- 

 tudinally, and to right and leftof the anus are small hairs unequal 

 in size. No marked distinction between abdomen and cephalo- 

 thorax. Head and rostrum conoid, compressed from above to 

 below, and having a rounded blunt extremity. Palps with two 

 setge, one long at the apex, the other shorter and at the base. 

 Throat indistinct. Limhfi, the anterior bear each four seta3 

 varying in size and length. Each terminates in a cup placed on 

 a long stalk at the free extremity. The epimercs of the first 

 pair of these limbs unite to form two prolongations, one dorsal 

 the other ventral. The hinder limbs are ventral at fair dis- 

 tance from the median line with separate epimeres and each 

 bearing a long strong seta. Shin of hack, chitinous plasti'on not 

 very distinct. Transverse striie undulating and obscure. Small 

 conical prominences between the epimeres of the anterior limbs 

 and two strong hairs, behind these three circular hollows with 

 inturned margin, then a number of transverse lines of conical 

 papillas with wide bases. At the posterior part two diverging 

 series each of four spinules and midway between those on the mar- 

 gin is the anal opening. 8Mn of helhj, strife more distinct than on 

 dorsum. Two circular hollows outside the anterior epimeres and 

 somewhat behind them. I]ight series of conical papillw arranged 



