188 bulletin: Must:u.M of comparative zoology. 



clavately enlarging lialf nearly smooth, (Plate 4, fig. 1). Tarsus I 

 with five segments; II with six articles of which three are in the second 

 division; III with six which are clothed ventrally with numerous fine 

 hairs and none of which is specially enlarged, but the metatarsus is 

 greatly enlarged toward its distal end which is abruptly narrowed 

 and resembles_a tarsal article in form and pubescence, while from the 

 ventral surface toward proximal end arises a very large, abruptly 

 ciu'ved branch or process, (Plate 3, fig. 8). 



Length of type 7.8 mm. ; greatest width of carapace 6.1 mm. 



Length of leg I cir. 9 mm.; of leg II, 16 mm.; of leg III, 12-1- mm.; 

 of leg IV cir. 17 mm. 



ioco///(/.— Lucma, 7,000 feet, August 7. (Type, M. C. Z. 129, 

 one male; paratypes, 130, two males). 



Pachylus orinus,^ sp. nov. 

 Plate 5, fig. 1-3. 



Body strongly narrowed cephalad; conspicuously constricted both 

 laterally and dorsally along first furrow just back of eye-region and 

 nearly in line with coxae of third legs; widest a little back of con- 

 striction where the sides are convexlv rounded and from w^here the 

 body narrows cavidad to end of abdomen with no constriction be- 

 tween cephalothorax and abdomen; abdomen caudally semicircularly 

 rounded. 



Carapace with five transverse sulci of which the most anterior lies 

 in the previously mentioned constriction and at its middle is bent 

 caudad at a distinct angle; the second one forms a slight angle at 

 middle with apex cephalad, while the other sulci are straight; no 

 connecting longitudinal median sulcus excepting a very weak one 

 between the first and second. Eye-tubercle sharply set off, about 

 equal in length and breadth; the cone between eyes high and acute; 

 eye-tubercle separated by a transverse furrow or depression from the 

 conspicuovisly elevated frontal border. Lower frontal margin deeply 

 notched or excavated for insertion of mandibles and between the two 

 notches extending ventrad in a spiniform process, otherwise unarmed ; 

 imarmed above. Carapace with lateral borders strongly elevated, 

 the marginal ridge over its middle, ectally curving portion conspicu- 



1 ' 



opeicot, a mountaineer. 



