42 BROOKLYN MUSEU.M SCIEXCE BUIXKTIN 3. 2. 
Strongly sinuous; near base of ventral side a short conical tooth or process 
])rojecting ventrad so that its tip lies just ectad or distoectad of that of 
the first ^•entral tooth of margin of furrow. (See figs. 7 and 8. ) 
Length, 11 mm. Length of cephalothorax, 3.5 mm. Tib. jiat. 
L 8 mm. 
Locality. — Peru: Chincha Is. Five females taken in their webs in 
houses. Dec. i, 1919. TN'pe, Museum of Comparative Zoolog\-, 523; 
]mratypes, Mu.seum of Comparative Zoology, 524 and Brooklyn Mu.seum. 
Tetragnatha s]). Inunature. 
Female. — Coloration of carapace, sternum and legs nearly as in aptaus. 
Annuli of legs more distinct, the tibiae and metatarsi showing a distinct 
pale annulus toward each end adjacent to terminal black rings with a 
broad dark region proximad of it. Abdomen above with a dark band 
having wavy edges bordered on each side by a silver-colored stripe, the 
dorsal band itself blackish with small included .silver- spots, a median pale 
line w'ith cro.ss-branches, and .several pale cross-marks caudad; venter 
with a median longitudinal black strii)e bordered on each .side with a 
silver-colored .stripe. 
Locality. — Peru: Chincha Ls. Oct. 26, 1919. In building of the 
Guano Adminimstration. One specimen. Po.ssibly the same si)ecies as 
the preceding. 
ATTIDAE. 
SiTTICUS MAZORCANUS, S]:). nOV. 
PI. 4. fig. 9- 
Male. — In its generic characters conforming clo.sel>' to .S". tcrcbratiis 
(Clerck), type of the genus. Anterior row of eyes recurved in .similar 
degree Vnit lateral e>es relatively a little farther from the medians. 
Integument of carapace and .sternum dark, black or nearly so, den.sel}' 
clothed with light gre\' or white hairs and reddish brown hairs and with few- 
er longer dark .setae, appearing lightest on dorsal region of head, with more 
of the brownish hairs on face and sides. Palpi den.sely clothed with 
bright white hair. Integument of femora of legs darker than that of 
the other joints, blacki.sh; all legs comi)letely clothed with light grey or 
whitish hair. Abdomen den.seh' clothed with the light hair with fewer 
