6 ARANEIDEA, 
ACTINOPUS. 
Actinopus, Perty, Del. Anim. Art. Bras. p. 198 (1833). 
Type Actinopus tarsalis, Perty. 
Tarsi without ungual tufts, 3-clawed. Tarsi and protarsi not scopulate. Eyes widely separate, not occupying 
a raised prominence. Apex of coxa of pedipalp produced on anterior side to form a conical prominence. 
Sternum deeply impressed behind labial plate. Thoracic fovea strongly procurved, not sinuous. Femur 
iii. incrassate, but parallel-sided. Labial plate elongate, coniform, its apex studded with numerous (10-15) 
cuspules. Coxa of pedipalp studded with numerous cuspules on anterior half. Protarsus iv. with 7 or 8 
irregularly scattered spines on anterior side. Tarsus iv. with 9-10 closely grouped short spines on anterior 
side. Mandibles with rastellum. 
1. Actinopus robustus. 
Pachyloscelis robustus,O.P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. p. 93, t.12. figg. 5,5a—d ( 2)’. 
Type in coll. Godman & Salvin. 
Hab. Panama, Veraguas (Boucard?). 
I am unable, from the description only, to distinguish the females of this form from 
A. scalops, Sim., though, in any case, it is not possible to decide the matter without 
comparing the males. Probably the females of these closely allied forms are them- 
selves inseparable, and from what I have observed in comparing the individuals of 
other forms of this genus from various localities I should quite expect this to be the 
case. It is of course highly possible, after a very careful comparison of numerous 
examples of all these forms, that some constantly variable character may be found in the 
females whereby the different forms may be recognized, but so far no such character has 
been discovered. 
The followings points may be noted as probably of specific value :— 
Q. Patella iii. with a regular row of 7 short spines and 2-3 irregularly placed spines on the anterior apical 
margin; posterior side with an irregular row of 10 spines and numerous irregularly placed spines. 
Tibia iii. with a regular single row of 12-14 spines on the anterior apical margin, becoming posteriorly 
irregular and more numerous. 
In A. wallace: (from Brazil) tibia iii. has a number of irregularly placed spines along 
the anterior apical margin, instead of a single regular row. 
NEOCTENIZA. 
Neocteniza, Pocock, Ann. & Mag. Nat. Hist. (6) xvi. p. 193 (1895). 
Type WV. sclateri, Poc. ( 2 ) loc. cit. p. 194, t. 5. figg. 3, 3a, b. 
Tarsi without ungual tufts, 3-clawed. Tarsi and protarsi not scopulate. Eyes widely separate, not occupying 
a raised prominence. Apex of coxa of pedipalp produced on the anterior side into a conical prominence. 
Sternum deeply impressed behind labial plate. Thoracic fovea transverse, recurved, slightly sinuous. 
Femur iil. incrassate, especially on the posterior side. Labial plate truncate, coniform, its apex set with 
simple hairs only, no cuspules. Ooxa of pedipalp not studded with cuspules. Protarsus iv. with 4-6 long 
spines, in a row, on anterior apical margin beneath, and 7-8 other irregularly scattered spines on anterior 
and posterior sides. Tarsus iv. without any spines on anterior side. Mandibles with rastellum. 
