SOLIFUG/E. 



511 



etc. ; they run rapidly laterally and backwards, and live on mites 

 and small insects. 



Fam. Chernetidae. Ckcl !/<> ctincrnirfi-g L. Book-scorpion with t\vo eyes. 

 O/iitthim 'ischnoxcelcs Herm., with four eyes, ('htlnutius tfotnliidiniih'x Latr. 

 (%. 412). 



Order 8. SOLIFUG.E.* 



Spider-like animals with separated head and thorax, ^vith elongated, 

 segmented abdomen; sub-delate delicerce and j)edifor>n, pe<li/>/iIi>i. 

 Respiration is effected b// means of trad w. 



The Solifugce ap- 

 proach insects in the 

 segmentation of the 

 body. The cephalo-tho- 

 rax is divided into two 

 regions of which the an- 

 terior is comparable to 

 the insect head, the pos- 

 terior (composed of three 

 segments) to the insect 

 thorax. The long cylin- 

 drical abdominal region, 

 which is composed of 

 nine to ten segments, is 

 quite distinct (fig. 413). 

 The body is closely 

 covered with hairs. The 

 oral apparatus consists 

 of powerful chelicera?, 

 which end in a large 

 vertically placed chela, 

 the lower arm of which can be moved perpendicularly against 

 the upper. The pedipalpi serve as ambulatory legs, but are with- 

 out claws, which are found only on the three posterior pairs 

 of legs. The latter arise from the three free thoracic rings, and 

 bear peculiar cutaneous lamella? at their base. The anterior 

 pair of legs belongs to the head and may be considered as a 

 second pair of pedipalpi (maxillary palps). The Solif'it,<j<r pos- 

 sess two large projecting simple eyes, and respire like insects by 



Fii;. 413. GalfuJeit t 



(regne animal). 



* L. Dufour. " Anatomic, physiologic et histoire naturelle des 

 Comptt's ri'mliix <1 V actid. drx science*. XL VI.. 185S. Th. Hutton, ' Observation-; 

 on the habits of a large species of Galeenies, 1 ' Ann. and Mug. of Xat. Hint., 

 XII., 1813. 



