314 Mr. R. I. Pocock on new Genera 



Tityus Quelchii^ sp. n. (PI. XIV. fig. 1.) 



Closely allied to T. columhianus (Thor.). 



Colour fulvous or flavous, nio-ro-niaculate. 



Carapace blackish laterally and mesially behind the black 

 ocular tubercle, the interocular portion and the sides of the 

 upper surface lurid and almost immaculate ; the tergites with 

 their posterior angles widely flavous, with two other con- 

 spicuous flavous spots along the posterior border on each side 

 of the middle line; the tail obscurely variegated with fuscous 

 patches and spots ; the fifth segment and the vesicle much 

 darker, sometimes uniformly fuscous ; chelicerte fuscous dis- 

 tally ; palpi fusco-flavo-maculate ; the brachium darker at its 

 distal end and the immovable digit at the base ; digits fusco- 

 maculate ; legs nigro-maculate ; apices of the maxillary lobes 

 of the first and second pairs of walking-legs fuscous. Sterna 

 fulvo-brunneous, obscurely mottled with fuscous. 



Carapace and tergites granular throughout ; the sides of 

 the ocular tubercle granularly carinate, and the carapace 

 posteriorly bicarinate; tergites with a posterior median granular 

 keel, and a curved transverse granular crest ; the seventh 

 tergite with the keel well developed. 



Tail nearly parallel-sided, rather more than four and a 

 half times the length of the carapace, the intercarinal spaces 

 granular, the keels strong and granular ; the second segment 

 with only a posterior vestige of the median lateral keel, the 

 superior keels of the second, third, and fourth segments 

 strongly elevated behind and terminating in a larger tooth, 

 the upper surface of the fifth weakly sulcate in the middle, 

 nearly smooth behind, the edges squared and granular; 

 vesicle compressed, much narrower than the fifth segment, 

 smooth and punctured above, serially granular beneath, mesi- 

 ally carinate, the spine beneath the sting deep and compressed, 

 very conspicuous, armed above with two spinules. 



PaJpi finely and closely granular throughout, all the normal 

 keels well developed and granular ; hand strongly carinate, 

 rounded, a little narrower than the brachium ; the movable 

 digit long and slender, twice the length of the hand-back, 

 furnished with 11-12 rows of teeth along the middle series. 



Legs carinr.te and granular, the soles of the feet furnished 

 with long closely-set hairs. 



Sterna finely granular throughout, the fifth furnished with 

 four granular keels, the fourth obsoletely bicarinate poste- 

 riorly, and the third furnished with a median posterior smooth 

 polished area. 



