SUPPLEMENT 



TRACHEAN ARACHNIDA. 



The genus Galeodes of the first family of this order was 

 established by Olivier, in 1791, in the " Encyclopedie Metho- 

 dique^'' under this denomination, as well as in almost all the 

 works of the French naturalists. But Fabricius has preserved 

 that of Solpuga, which was bestowed upon this genus a few 

 years after by Lichtenstein. Hespecting the general cha- 

 racters of these arachnida, it may be necessary to enlarge a 

 little on the text. The body is oblong, and annulated ; the 

 anterior segment is much the larger, and supports two very 

 strong projecting and compressed mandibles, terminating in a 

 denticulated forceps, the lower branch of which is mobile. 

 There are two simple eyes, which are dorsal, and approxi- 

 mated to each other on a common tubercle ; and two large 

 filiform palpi, without any terminal hook. The first feet 

 are also filiform, imperfect, and in the form of palpi. The 

 mouth is composed of two sciatic jaws, formed each by the 

 union of the base of one of these palpi, and one of the anterior 

 feet, and of a sternal subulate ligula, situated between the 

 mandibles. There are six other filiform feet, terminated each 

 by two species of long mobile digits, with a little hook at the 



