318 ARACHNIDES. 



at most, excepted, and two apparent chelicera? terminated by two ringers and 

 two toes, formed by the tirst joint of the palpi. They are all terrestrial, and 

 have an oval or oblong body. This family comprehends but two genera. 



GALEODES, Olivier. SOLPUGA, Lichtenstein, Fabricius. 



Two very large chelicera, with strongly dentated vertical fingers, one supe- 

 rior, fixed, and frequently furnished at its base with a slender, elongated, 

 pointed appendage, and the other moveable; large projecting palpi in the form 

 of feet or antennae, terminated by a short, vesicular joint, resembling a button 

 without a terminal hook; the two anterior feet of an almost similar figure, 

 equally unarmed, but smaller. 



Their body is oblong, generally soft, and bristled with long hairs. The last 

 joint of the palpi, according to M. Dufour, contains a particular organ formed 

 like a disk, of a nacre-white, and which never protrudes unless the animal is 

 irritated. The two anterior feet may be considered as second palpi. The 

 abdomen is oval, and composed of nine annuli. 



It is supposed that the ancients designated these animals by the names of 

 Phalangium, SoliJ'uga, Tetragnatha, &c. M. Poe discovered a species in the 

 environs of Havana, but the others are peculiar to the hot and sandy countries 

 of the eastern continent. They run with great celerity, erect their heads when 

 surprised, and show signs of resistance ; they are considered venomous. 



CHELIPER, Geoffrey. OBISIUM, Illiger. 



The palpi elongated in the form of an arm, with a hand terminated by a 

 didactyle forceps; all the legs equal, terminated by two hooks; the eyes placed 

 on the sides of the thorax. 



These animals resemble small Scorpions destitute of a tail. Their body is 

 flattened, and the thorax nearly square, with one or two eyes on each side. 



They run swiftly, and frequently retrograde or move sideways Like Crabs. 



FAMILY II. 

 PYCNOGONIDES. 



THE trunk, in this family, is composed of four segments, occupying nearly 

 the whole length of the body and terminated at each extremity by a tubular 

 joint, the anterior of which is the largest, sometimes simple, and sometimes 

 accompanied by chelicenc and palpi, or only one kind of these organs, that 

 constitutes the mouth. There are eight legs in both sexes, formed for running, 

 but the female is furnished with two additional false ones, placed near the 

 two anterior, and solely destined to carry her eggs. 



The Pycnogonides are marine animals, analogous either to the Cyami and 

 the Caprellae, or to the Arachnides of the genus Phalangium, where Linna-us 

 placed them. Their body is commonly linear, with very long legs, composed 

 of eight or nine joints, terminated by two unequal hooks, which appear to form 



