HARVEST MITES. 



127 



CASE hairs or papillae on the body as flattened like blades of grass ; but 

 these deviations are mere questions of degree, for various species 

 of Trombidium have the hairs on their body thickened at the 

 end. 



No 7. Smaridia papillosa {Dug., Ann. Sc. Nat. 1834).— 7. jMagnified sketch of 

 ditto. 



Smaridia papillosa. 



Nearly half a line in length. Brick-red, with a longitudinal 

 dorsal line somewhat paler. Found in numbers on the sandy 

 banks of the streams near Marseilles. 



A species from Chili, with the characteristic papillae, but with 

 the swollen tarsal joint of Rhyncholophus, is figured by Gay in 

 his Histoiia Physica of Chili. 



Genus Paciiygnathus {Duges). 



This is another genus founded by Duges on a single species. 

 It has short palpi, and the mandibles chelate, that is, furnished 

 with nippers. 



