TXODIDA. 59 



The form described by him as the second form hag an oval 

 body, crooked when dead, terminating in a pointed head, without 

 any neck. The nippers are hollowed out like shells, and strongly 

 denticulated on both sides; the feet six- jointed, with small, gently 

 curved claws, and beset, like the body, with longer and shorter 

 bristles, which towards the end^of the body become elongated 

 and sit upon small knobs (fig. 7). 



Fig. 7. 



Fig. 8. 



The form described as the third (fig. 8) exhibits a constant 

 difference in the form of the body and bristles, which are slightly 

 crooked and uniformly plumose on both sides. The first joint of 

 the legs is very long. The animal appears to ' me closely to 

 resemble the cheese-mite. Some kind of strayed mite is certainly 

 referred to. 



Family of the Ticks = IXODIDA. 



Acarida magna, plana, in dorso cephalothoracis testa cornea 

 obtecta, abdomine, si vacuum est, plicato, si sanguine repletum est 

 valde intumido. Testa respiratoria parvula, orbicularis ; punctum 

 respiratorium punctiforme, parvulum, rotundum. Pedes breves, 

 pariter articulati, ad imaginem (< pair is nostri " formati, in apice 

 unguiculati et arolio, qui stylo caret, armati ; rostellum maximum, 

 prominens ; palpi vagin&formes, ad rostellum applicati ; labium 

 protractum, semicanellatum (like a half-canal) denticulatum ; 

 mandibula breves, crassce, ex 3 articulis composites, in extremo 

 articulo acuta et denticulatae . Oculi parvuli. Habitant in silvis 

 et in fructicetis aridis ad gramma, muscos, fyc., siccos, unde ad 



