1MJDIPALPI. 507 



In the genus Thelyphonus, however, which is most closely allied to 

 the Scorpions, the three last segments of the abdomen are narrowed 

 to the form of a short tube, the end of which is prolonged into a 

 lon^- jointed appendage. The chelicerse are always provided with 

 claws, and probably, as in the spiders, contain a poison gland, since 

 the bite of these animals is much feared. The Pedipalpi, on the other 

 hand, are sometimes of considerable strength and armed with a claw 

 and several spines (Phrynus}. Sometimes (Thdyplionus) they are, 

 as in the Scorpions, chelate. The legs of the anterior pair are 

 always very long and thin, and end with a flagelliform ringed 

 portion. There are eight eyes, of which the two largest are placed 



KG. 400. Phrynus reniformis (regae animal). Kt, Pedipalpi ; Gb, flageliiform anterior leg. 



in the middle of the cephalo-thoracic shield, while the three smaller 

 pairs are sitated on each side behind the frontal margin. They 

 breathe by means of four lung sacs, composed of a very large 

 number of lamellar tubes. The slit-like openings of the lung sacs 

 lio on either side of the posterior margin of the second and third 

 abdominal segments. In the structure of the alimentary canal they 

 resemble the Scorpions, in that of the nervous system the Spiders 

 The genus Phrynus is viviparous. All the Pedipalpi live in the 

 tropics of the Old and New World. 



Fam. Phrynidse. With the characters of the order. Phrynus Oliv. The large 

 broad pedipalpi are armed with a number of spines and end with a claw. The 

 masticating blades are free. The abdomen is flat and relatively short, and has 



