THERIDIIDA. 
1. Lateral eyes in contact. 
a. Sternum produced into a narrow point between coxe iv. 
6. Sternum produced into a broad piece between coxze iv. 
2. Lateral eyes narrowly separated. 
a’. Central anterior eyes much larger than the laterals 
6'. Eyes of anterior row subequal . 
** Sternum not prolonged between coxee iv. 
B, Chitinous margin of stridulating-cavity deeply bifid i in the 
middle, forming a long dentigerous lamina on each side . 
. Males without a stridulating-cavity on the abdomen. 
AA. Carapace without transverse groove, but with the usual 
central depression or longitudinal groove. 
+ Colulus very conspicuous 
tt Colulus absent or very minute. 
A. Colulus entirely absent. 
a’. Anterior row of eyes straight or recurved, Tibia of 
male palpus normal. 
a’. Eyes of posterior row equidistant. Eye-groups closer 
together . . .... . . ‘ 
. Central posteriors much nearer together than to the 
laterals. Hye-groups more widely separate . 
6°. Anterior row of eyes procurved. ‘Tibia of male palpus 
enormously developed. . . . 2 8 ee 
B. Colulus present, but often almost obsolete, represented 
\ only by two bristles set on a minute tubercle. 
aa. Sternum not broadly produced between coxz iv. 
la. Posterior row of eyes straight or slightly recurved. 
a*, Lateral eyes contiguous ; clypeus higher than the 
central ocular quadrangle. 
a‘, Leg i. longer than leg iv. 
a’, Abdomen not conically produced behind. 
Bulb of male palpus involuted 
. Abdomen conically produced behind. Bulb 
of male palpus not involuted 
b*. Leg iv. longer than leg i. . Loe 
b*. Lateral eyes slightly separate; clypeus narrower 
than the central ocular quadrangle 
1 4. Posterior row of eyes distinctly procurved 
bb. Sternum broadly produced between coxe iv. 
a®. Eyes of anterior row subequal. 
i. Tibiz and protarsi i. and ii. with rows of long spines 
on the inner side . . . . ar a 
ii. Tibize and protarsi i. and il. without rows of long 
“spines. 
**, Central eyes of the posterior row the largest 
373 
TRUTANA, E. Simon, 
Wanaa, O. P.-Cambr. 
Stearopgea, F. Cambr. 
Lituyrnantes, Thorell. 
Asacena, Sund. 
Corrosoma, O. P.-Cambr. 
Latropectus, Walck. 
Streatopa, Sund. 
Tueripion, Walck. 
THERIDULA, Emert. 
ANnELosimvus, E. Simon. 
Tuwattesta, O. P.-Cambr. 
Evryopis, Menge. 
Erisinus, Walck. 
SpintHarvus, Hentz. 
Dirana, Thorell. 
Sremmops, O. P.-Cambr. 
