AETHROPOD FAUNA OF THE WEST INDIES, 381 



6. TiTTUS MELAK03TICTFS, sp. n. (PI. XSIX. figS. 4-4 5.) 



Colour flavous or fulvous, fusco-maculate, the ocular tubercle 

 and auteocular portion of carapace fuscous, mesially flavous, the 

 posterior and lateral portions of this plate fusco-maculate and 

 liueate; each of the tergites, except the last, furnished in front 

 with a transverse row of fine fuscous spots, the external spot ou 

 each side is situated on the very margin of the plates, the 

 median one is divided by a flavous spot marking the median 

 keel ; posteriorly the tergites are adorned with three fuscous 

 spots, the median of which is divided, like the spot in front of 

 it, bj a clear flavous spot, and the two lateral ones are united 

 by a fine fuscous line, which marks the transverse granular 

 ridge; the last abdominal segment, above and below, fusco- 

 maculate ; the rest of the sternites concolorous ; the upper 

 surface of the tail mostly concolorous, sometimes obscurely 

 fusco-maculate, the lower surface of the first three segments 

 mottled with flavous, the fourth and fifth segments and the 

 vesicle generally uniformly infuscate or reddish brown ; palpi 

 subfuscous, mottled with round clear flavous spots above, the 

 digits fuscous at the base, becoming gradually pale distally ; legs 

 externally fusco-maculate. 



$ . The upper surface of the body subtly granula.r, the normal 

 keels not strong but visible ; the sterna, except the last, smooth, 

 marked with more or fewer large punctures ; the last subtly 

 granular with black keels. The tail about 5| times as long as 

 the carapace, subtly granular, the keels visible but weak and 

 subtly granular ; the first segment with ten keels, the second 

 with eight and a trace of the median lateral; the first segment a 

 little wider than the fifth. The vesicle armed with an acute 

 .conical tooth beneath the aculeus. 



Tlhe palpi with well-expressed granular keels, the intercarinal 

 spaces coriaceous ; the manus small, internally rounded and 

 produced, normally costate, the costse scarcely distinctly gra- 

 nular ; its width considerably less than half the length of the 

 movable digit and less than the width of the brachium. Tlie 

 digits long and slender, contiguous, neither lobate nor sinuate ; 

 the movable digit about twice the length of the " hand-back," 

 and furnished with 14 rows of teeth. 



The pec^mes shorter than the posterior coxae, furnished with 

 15-17 (usually 16) teeth ; the proximal lamella of the inter- 

 mediate series produced internally into a rounded prominence. 



30* 



