of the Genus Vtejovls. 399 



Measurements in milUmet^'es, — Total leng-th 33 : length of 

 carapace 4, tail 17. 



Log. JNIexico [Patrick Gecldes). 



Belonginf^ to the same category as V. mexicanus^ C. Kocli 

 (* Die Aracliiiiden,' iii. p. 51, 1836), of which the British 

 Museum has several examples from the city of Mexico and 

 the Lake of Chalco, with the inferior caudal keels granular ; 

 but differs in having the tail thicker, and the intercarinal 

 spaces coarsely and closely granular. In V. mexicanus the 

 intercarinal spaces are at most weakly granular, the inferior 

 being almost wholly smooth, and the fifth segment of the 

 tail is longer than the carapace, the third caudal segment is 

 lonoer than wide. 



Vfpjovis pusil/us, sp. n. 



Colour : densely variegated above and below and on the legs 

 and palpi ; tergites with a median triangular reddish patch, 

 a V-shaped mark of the same colour, a subniarginal yellow 

 stripe, and a clear yellowish-red spot on each side of the 

 middle line; the general pattern of coloration being describable 

 as consisting of a fine yellow band separated by four black 

 bands. 



Belonging to the same category as V. mexicanus of Koch ; 

 with the inferior and infero-lateral caudal crests developed 

 and granular; the lateral and inferior intercarinal spaces very 

 finely and closely granular or coriaceous, also furnished witli 

 a few larger granules ; vesicle granular below, fifth segment 

 of tail with a very distinct and long median lateral crest. 



Palpi constructed very much as in V. mexicanus ; but the 

 crests, especially on the brachium, much weaker, the posterior 

 crest of the upper and under surfaces very little pronounced. 



Pectinal teeth 11-12. 



Total length 20-25 millim. 



Lac. Omilteme, in Guerrero, 7000 to 9000 feet, under 

 rotten logs [H. H. Smith). 



The species described in the preceding pages may be deter- 

 mined as follows : — 



1. Tail thicker ; the inferior and usually the infero- 

 lateral crests of segments 1-4 obsolete, entirely 

 smooth, marked with large punctures ; last abdo- 

 minal sternite smooth, not crested ; hand (except 

 in nigrescens) smooth, scarcely crested in (5 ; 

 hrachium with posterior crests weak. 

 a. Hand witliout crests and granules, at least the 



posterior crests of brachium smooth or almost 



obsolete ; movable digit shorter, the fifth caudal 



segment variegated black and yellow. 



30* 



