— & — _ 



.Abdomeij smooth and jj^lossy, ali the tergites.and sternites are in the 

 front inarjrin someNvhat crenulated. Both the tergi tes and the sternites 

 are divided loiigitndinal y, except the last ()n(\ Tliere are some scattereil 

 acute hairs, mostly behiiid; oii the last si.nite some veiy long inter- 

 mixed. 



The palps are moderately strong, short, hardly ^/^ of the length of 

 the body, very shining, tìiriiished with common, rather long hairs. 

 Trochanter soraewhat longer than broad, pernaeformis, staiked, the inner 

 side slightiy convex, the outer side slightiy concave. Femur about as 

 l«.)ng as cephalothorax, with short and strong stalk, about doublé ^^s long 

 as broad, the inner side rather convex, towards the extremity a little 

 c(mcave, the outer side very slightiy convex or nearly rectilineous. 

 'i'ibia wiìh rather long and strong stalk, considerably shorter than 

 femur, but somewhat broadpr, broadly oviforrn, the ouier side regularly 

 and strongly convex, the iniiHr side convex too, but more irregularly. 

 The band with a short stalk, somewhat longei' aud somewhat broader 

 than tibia, somewhat longer ih.m broad, on hoth sides very slightiy 

 convex, or the outer side alinost straight. Fmger.s a little ciirved an^i 

 abnut as long as the band oi' veiy little shorter. Both the fiufzers on 

 thfir inner margins with small, triangular teeth, inclining a little back- 

 wards, on the fixed finger almost along the whole margin, on the mo- 

 veable one in the last half. 



The fixed finger of the mandibles from narrow base almost parallel- 

 sided, the moveable one slightiy narrowmg to the extremity, tìm outer 

 side nearly straight; galea strong, in the extremity divided into tw > 

 branches; there can also he a smaller branch in the middle. 



Ttie legs provided with scattered, long hairs. Tiie two anterior pairs 

 ha\e very distinct trochantins, on the two postei-ior pairs, particularly 

 on the last one, the trochantin division is very indisiinct. The femur^, 

 particularly those of ihe last pair of legs, are very broad. Buth the tarsai 

 art'cles about equal in length, yet the first a little shorter than the 

 second. The claws simple. The arolium stalk is divided into two branches, 

 Ccirrying each an arolium, projecting far beyond the claws. 



Length about 2 ^/j mm., width about % mui., the animai being thus 

 very narrow. 



Habitat: Patagonia, near Rio S. Cruz. 4 specimens. 



The two species, G. dimidiatus (L. Koch) Daday and the new specios 

 may he separated thus : 



G. dimidiatus: The femur of the palps from the stalk to the middle 

 jxradually broader, both sides straight; tibia on the outer side almost 

 .sLraight; the band almost straight both on the outer and inner sid > ; 

 Llie (ingers shorter than the band; the, 3 anterior tergites undivided, 

 Uie rest divid^'d longitmliiially; the firsi tarsal article of the legs onìy' 



