PULMONARY. 203 



the two anterior tarsi very long and slender, resembling setaceous 

 antennae(l). 



Thelyphonus, Lat. 



The Thelyphoni are distinguished from the preceding subgenus 

 by their shorter, thicker palpi, terminated by a forceps or by two 

 united fingers; by their long body with its oval thorax, and the ex- 

 tremity of the abdomen furnished with an articulated seta forming a 

 tail. Their anterior tarsi are short, of a uniform appearance, and 

 composed of few articulations(2). 



The others have their abdomen intimately united to the 

 thorax throughout its entire width, presenting, at its inferior 

 base, two movable pectiniform laminae, and terminated by a 

 knotted tail armed with a terminal sting. Their stigmata, 

 eight in number, are exposed, and arranged four by four 

 along the belly ; their chelicerae are terminated by two fin- 

 gers, of which the exterior is movable. They form the genus 



Scorpio, Lin., Fab. 



Scorpions have an elongated body, suddenly terminated by a long 

 slender tail formed of six joints, the last of which terminates in an 

 arcuated and excessively acute point or sting, which affords issue to 

 a venomous fluid contained in an internal reservoir, forming a long 

 square, and usually marked in the middle by a longitudinal sulcus, 

 presenting on each side, and near its anterior extremity, three or 

 two simple eyes, forming a curved line, and near the middle of the 

 back two others, also. simple, which are approximated. The palpi 

 are very large, with a forceps at the extremity resembling a hand; 

 their first joint forms a concave and rounded jaw. There is a tri- 

 angular appendage at the origin of each of the four anterior legs, 

 which (appendages) by their approximation have the appearance of 

 a quadripartite lip; the two lateral divisions, however, may be con- 

 sidered as a kind of jaws, the remaining two forming the ligula. 



(1) Phalangium reniforme, L.; Pall. Spic. Zool. fascic. IX, iii, 5, 6; Herbst. 

 Monog. Phal., Ill; East Indies, the Sechelles; Herbst., lb., IV, 1, South America; 

 Tarantula reniformis, Fab.; Pall. Spic. Zool., IX, iii, 3, 4; Herbst. lb. V, 1; ejusd. 

 IV, 2, var.? the Antilles. . 



(2) Phalangium caudatum, L.; Pall. Spic. Zool- fascic. IX, iii, 1, 2, from Java. 

 South America produces another species described and figured in the Jour, de 

 Phys. et d'Hist. Nat., 1777; the inhabitants of Martinique call it the Vinaigrier. 

 A third species, smaller than the preceding ones, and with fulvous feet, inhabits 

 the peninsula beyond the Ganges. 



