228 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
ARGYRODES LUCMAE, sp. nov. 
Plate 15, fig. 4-6. 
Carapace pale yellow. Sternum dusky brown or blackish. Labium 
blackish, pale across tip. Endites yellowish with some dusky mark- 
ings. Legs pale yellow or, especially the caudal pairs, proximally 
whitish. Abdomen covered with scales of shining silver over a pale 
yellow ground. 
Abdomen moderately elongate; roundly elevated above toward 
base, (Plate 15, fig. 5). 
Posterior row of eyes straight or very nearly so; medians about 
five sevenths their diameter apart, a little closer to the somewhat 
smaller laterals (6:7). Lateral eyes contiguous, subequal. Anterior 
row of eyes straight; medians their radius or slightly more apart, 
about half as far from the laterals which are smaller (diameters about 
as 6:7). Clypeus slightly narrower than the diameter of a median eye. 
Labium wider than long (cir. 4:3); sides but little convex and 
moderately converging distad; distally widely truncate. 
Sternum broadest across anterior end, rounded caudad and extended 
as a slender acute process between the fourth coxae; total length to 
the width about as 9:8, (Plate 15, fig. 4). 
Male. Length 3.8 mm. 
fem. tib.+pat. met. tar. total 
Leg I 5mm. 6.2mm. 7mm. 1.6mm. 19.6mm. 
Leg II 3.2 3.7 3 Hath 11.0 
Leg III 2.6 2.5 2 9 8.0 
Leg IV 3 De 1.0 8.5 
Locality.— Lucma, 7,000 feet, August. (Type, M. C. Z. 177, one 
male). 
THERIDION sp. a. 
A young female of doubtful species from Lucma, 7,000 feet, August. 
(M. C. Z. 178). 
THERIDION sp. b. 
An immature female from the Conservidayo River, August. 
(M. C. Z. 179). 
