14 ARANEIDEA. 
of sectional value, including several distinct genera, that it is necessary, considering 
the difficulty of distinguishing mature from immature forms in this suborder, to be 
very cautious of including forms in the same genus on the grounds of a similarity in 
this respect. Caution is still more necessary in the case of forms from widely separate 
regions of the world. 
Subfam. THERAPHOSINA. 
A. Femur iv. with a distinct thick pad on the inner side. 
a. Tibia i. (g) with no spurs at the apex beneath. 
Protarsus iv. with no thick scopula on the inner side . . Sxericoprtma, Auss. 
6. Tibia i. (3) with two short spurs at the apex beneath. 
Protarsus iv. with a thick scopula on the inner side. . . Xenesrutis, E. Simon. 
B. Femur iv. without distinct thick pad on the inner side or 
only a pair of hairs similar to those on the other segments 
of the legs. 
i. Tibize and protarsi iii. and iv. without spines, or at most 
one or two. 
a. Carapace more or less convex, anterior row of eyes 
strongly procurved . . . ...... =. . +. <Avicunarta, Lam. 
6. Carapace more decidedly flat, anterior row of eyes 
straight. 2. 2. 2. ee. we we ee ee  6TaAPINAUCHENIUS, Auss. 
ii. Tibize and protarsi 11. and iv. with numerous spines. 
a. Scopula beneath the tarsi not divided longitudinally by 
a narrow band (or row) of set or spines. 
a*, Tibial spurs more or less long and slender. Apex of 
labium studded with numerous cuspules, closely 
clustered. 
1. Thoracic fovea normal, transverse, concave . . Euryprrtma, C. Koch. 
2. Thoracic fovea abnormal, circular, with central 
conical development . . . . . . . . . . SpHa#rozoruria, Karsch. 
6*, Tibial spurs very short and stout. Apex of labium 
studded with a few scattered cuspules only. - Parapuysa, E. Simon. 
6. Scopula beneath the tarsi divided longitudinally by a 
band (or row) of spines or setz. 
1*, Scopula divided by a row of fine setz. 
* Scopula beneath tarsus iv. only so divided. 
aa. Tibia i. (3) with two long spurs at the apex 
beneath . 2... . ee, Hapatopus, Auss. 
6b, Tibia i. (3) with one spur only, or none, at 
the apex beneath. 
1. Tibia i. (d) with one spur only (spinigerous) 
on the inner side at the apex beneath and 
several (7-8) spines on the outer side. Pro- 
tarsus li. scopulate to the base . . . . SCHIZOPELMA, gen. nov. 
