10. ARANEIDEA. 
lateral spines. ‘Tibiee iii. and iv. are armed on the outer side with numerous irregularly 
set spines. Anterior row of eyes straight. Ocular area small, transversely narrow 
and parallel on each side. Sternum with two sigilla in the centre. 
Group CYRTAUCHENIE. 
The spiders falling into the group Cyrtaucheniee may be distinguished, first, from 
the Idiopee by the eyes forming one group instead of two; from the Pachylomerez 
by the normal form of the tibia of the 3rd pair, not impressed at the base; from the 
Ctenizeee by the thick scopula beneath the tarsi, and often the protarsi of the first 
two pairs of legs; from the Aporoptyche by the short and semi-globose form of the 
terminal joint of the mamille; and, lastly, from the Nemesiew by the strongly 
procurved semilunar form of the thoracic fovea. 
The group is represented in Central America by several genera, Lutychides, Enrico, 
Favila, and Eucteniza. The first mentioned of these genera alone has more than one 
species recorded—two from Central America and one from the Antilles. avila and 
Eucteniza are, I believe, referable to the same genus, the name Kucteniza having 
priority. Enrico is, I suspect, a good genus, for the anterior margin of the posterior 
pair of sigilla is less than half the length of the sternum from the base of the labium. 
These sigilla are also more elongate and attenuate posteriorly than is the case in 
either Favila or Hucteniza. 
The following table briefly summarizes the distinguishing characters of the three 
genera which are recognizable out of the four recorded :— 
A. Anterior tarsal claws ( 2) with five long teeth besides a large bifid basal 
tooth. Palpal claw with six short teeth. Sternum not much longer than 
broad. Patella iv. not armed on outer side at base with cuspules. Legs 
clothed with short thickly set hairs. Tarsus iv. with a thick tuft of hair 
beneath. Scopula beneath protarsi and tarsi i. and ii.( ¢) very thick. Eurycnipzs, E. Sim. 
B. Anterior tarsal claws ( ?) with, at most, two (ucteniza) teeth besides 
a large bifid basal tooth. Palpal claw with a large bifid basal tooth, 
and a single tooth towards apex, on inner side. Sternum considerably 
longer than broad. Patella iv. armed at base on outer side with 
cuspules. Legs very sparsely clothed with short hairs. Tarsus iv. 
without a thick tuft of short hair beneath. Scopula beneath protarsi 
and tarsi i. and ii. ( 9 ) less dense (in Hucteniza very slight). 
a. Posterior sternal sigilla elongate-piriform, attenuate behind; their 
anterior margin extending more than halfway from the base of the 
sternum to the base of the labium. Labial plate more elongate- 
OVAL eg ea eae is ey ee et ee es eo eioo; O. P.-Cambr-. 
6. Posterior sternal sigilla short-piriform, less attenuate behind; their 
anterior margin extending less than halfway from the base of the 
sternum to the base of the labium. Labial plate more semicircular. Evcreniza, Auss. 
