~] 
CERATINOPSIS.—TETRAGNATHA. 42 
1. Ceratinopsis pergrata. 
Itys pergrata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 127, t. 16. figg. 12, 12 a-e (d)’. 
Type, ¢, in coll. Godman & Salvin. Total length 2:25 millim. 
Hab. Guatemata, Coban (Sarg *). 
This spider belongs, so far as one can judge from Emerton’s figures, to the genus 
Ceratinopsis. The examples in the collection identified as Erigone montividensis, 
Keys., belong to the same species. 
Subfam. TETRAGNATHIN ZA. 
The spiders comprised in this subfamily are closely allied to the Metine, differing, 
however, from them in the absence of a basal boss on the mandible. ‘The abdomen is 
elongate, and the web much resembles that of Meta and its allies. The two genera 
represented in Central America may be recognized by the following characters :— 
1. Lateral eyes not in contact, not seated on a prominence. Femur ii. 
of the male without a specialized spine at the apex on the outer side. 
Protarsi i. and 1. of the male without spinules beneath. Femur i. 
without short spines in front towards the base . . . . . . . Terrracnatna, Latr. 
2. Lateral eyes in contact, seated on a prominence. Femur ii. of the 
male with a conspicuous spine at the apex on the outer side, special- 
ized to meet an angle on patella ii. Protarsi i. and il. of the male 
with spinules beneath. Femur 1. with a row of short spines in front [Cambr. 
towards the base . . . . 2... ew ee SS:SC AG RIOGNATHA, O, P.- 
TETRAGNATHA. 
Tetragnatha, Latreille, Nouv. Dict. d’ Hist. Nat. xxiv. p. 185 (1804). 
Type 7. extensa (Linn.). Europe. 
The species usually referred to this genus may be recognized in a general way by 
‘their elongate bodies and in their habit of crouching on a grass-stem or in the centre 
of their orb-web, with legs stretched out straight. From the spiders belonging to the 
group of which Meta is typical they may be known by the absence of the basal boss 
on the outer side of the mandible at its base, as well as by the more numerous teeth 
on the mandible. They differ from Agriognatha (=Cyrtognatha, Keyserl.) by the 
separation of the lateral eyes. In the male sex there are other important aifferences ; 
see under Agriognatha, infra. 
| Males. 
A. Mandibles with one very long conspicuous tooth, on the upper 
margin of the fang-groove, at about the apical third or fourth 
(a in figures). 
