UR0TR1CHA. 



101 



Suborder UROTRICHA* 



Carapace unsegmented, furnished at its fore extremity with a pair 

 of median eyes set close together and with a cluster of 3 lateral 

 eyes on each side, some distance behind the medians. Chela 

 folding in a horizontal plane; the coxa short, the tibia armed with 

 a long inwardly directed spine or apophysis, against which the 

 hand closes ; hand with a corresponding apophysis, the immovable 



Fig. 30. — TheJyphonus indicus, J. 



c, carapace; ", first tergum of abdomen ; m, ommatoid or last segment of 

 abdomen; n, caudal flagellum; .-. trochanter; x, femur; ", tibia] apo- 

 physis; <?, hand ; c, movable finger of chela; b, tarsal segments ef 1st 

 [eg; J, coxa ; g, trochanter; I/, femur; i, patella : /, tibia; k, protarsus; 

 /, tarsus of 4tli Leg. 



finger, which forms with the movable finger a complete pincer; 

 claw fused with extremity of movable finger. 1st leg with 

 tarsus consisting of 9 segments; 2nd leg with coxa unarmed; 

 2nd, 3rd, and 4th legs with tibia long and protarsus verj 

 short, the extremity of the tibia often armed on the underside with 

 a slender spine, the tibial spine. Postanal skeletal piece consisting 



* 1 here restore for this group the very appropiate name which was given to 

 it by C. Koch. Thorell applied to it the term Oxopoei, or " acid-makers," in 

 allusion to the defensive pungent Beoretion the animals emit when handled. In 

 ordinary phraseology these animals are known as " Whip-Scorpions." 



