240 bulletin: museum of comparative zoology. 



Posterior row of eyes recurved as usual; median eyes near two 

 and two fifths their diameter apart and about the same distance from 

 the laterals. Lateral eyes their diameter apart, their tubercles in 

 contact at base. Anterior row of eyes slightly procurved; median 

 eyes once and a half their diameter apart, twice their diameter from 

 the laterals. Area of median eyes much wider behind than in front 

 (ratio 5:4). 



Upper margin of furrow of chelicera with six (or five) teeth of which 

 the one nearest the claw is much the largest; this separated from the 

 second by a wide space, the second, third, and fourth about equal in 

 size and spacing, the two most proximal smaller. Lower margin with 

 four teeth equally spaced but with the first considerably largest as 

 in the upper row, (Plate 18, fig. 1). 



Legs with the spines of the distal joints long, slender, and sub- 

 appressed, clearly longer than in the succeeding species, T. quechua. 



Female. Length 7.7 mm. Length of cephalothorax 2 mm.; width 

 1.6 mm. 



fern. tib.+pat. met. tar. total 



Locality. — Conservidayo River, August. (Type, M. C. Z. 203, 

 female; paratypes, M. C. Z. 204, numerous specimens, chiefly imma- 

 ture males and females). 



Tetragnatha quechua,^ sp. nov. 



Plate 18, fig. 4. 



Carapace and chelicerae light brownish yellow. Sternum somewhat 

 dusky yellow. Legs yellow, femora, and tibiae darker at the distal 

 ends but legs not truly annulate. Abdomen above silvery white in 

 numerous spots separated by a close network of fine grey lines; a 

 median longitudinal grey line throughout length, this widest at the 

 anterior end and giving off a principal pair of branches in a caudo- 



• The Quechuas are the indigenous people of Peru and Ecuador. 



