PARASTEPHANOPS.—ISALOIDES. 163 
PARASTEPHANOPS, gen. nov. 
Type P. cognatus (O. P.-Cambr.). Central America. 
Eye-group much narrower than the front of the carapace. Ocular area * slightly bilobed, the two lateral eyes 
on each side, including one of the central posteriors, situated on a separate lobe. Anterior row of eyes 
recurved, laterals much larger than the centrals; centrals closer together. Posterior row much broader 
than the anterior, recurved, subequal; centrals further from each other than from the laterals. Ocular 
quadrangle broader than long (it appears longer than broad—see note on measurements), much narrower 
in front. 
Clypeus as high as two diameters of an anterior central eye. Mandible with one long and three or four smaller 
teeth. Tarsi i. and ii. not scopulate, nor with two rows of sete on each side. Claws toothed throughout, 
with from 10 to 12 teeth. 
Labium as broad as long, almost square, squarely truncate at the apex. Maxille short, inclined, dilated at the 
apex. Tibi i. and ii. with 2—2—2—2 spines beneath and three lateral spines ; protarsii. and ii. with 
2-2-2 spines beneath, two laterals and a single subapical spine. 
This genus may be distinguished from Stephanopoides by the characters given in the 
Table, antea, p. 156. 
1. Parastephanops cognatus. (Tab. XI. fig. 4, 2.) 
Stephanopoides cognata, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 104, t. 14, figg. 2 
2a-c (@)*. 
Type, Q@, in coll. Godman & Salvin. Total length 7°75 rillim. 
3 
Hab. Panama, Bugaba (Champion), Veraguas (Boucard '). 
ISALOIDES, gen. nov. . 
Type, adult 9, J. putus (O. P.-Cambr.). Central America. 
Upper and lower margins of the fang-groove toothed. Posterior row of eyes wider than the anterior ; both 
rows recurved, posterior strongly, anterior slightly. Anterior laterals very much larger than any of the 
other eyes, three times the diameter of the anterior centrals. Posterior laterals larger than the posterior 
centrals. Ocular quadrangle much longer than broad, narrower in front, anterior centrals much smaller 
than posterior centrals. Clypeus equal to four diameters of an anterior central eye, obliquely inclined 
backwards. yes of posterior row equidistant. Central anteriors further from each other (2 diameters) 
than from the laterais(13 diameters). Ocular area scarcely narrower than the front of the caput. Legs 
of first and second pairs subequal. Colulus absent. 
The characters given above are drawn from an adult female, the type of Diewa puta, 
O. P.-Cambr., which is identical with Hrissus pustulatus, O. P.-Cambr., the latter being 
an immature specimen of the same sex. 
1. Isaloides putus, (Tab. XI. fige. 5, 5 a-c, 2.) 
Diea puta, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 85, t. 11. figg. 5, 5 a-c (2 adult) 
(1891) °. 
Erissus pustulatus, O. P.-Cambr. loc. cit. i. p. 271, t. 35. figg. 2, 2 a-d (2 juv.)*, 
Types, 9, of D. puta and £. pustulatus in coll. Godman & Salvin. Total length 6 millim, 
* It is exceedingly difficult to estimate correctly the measurements of the ocular quadrangle, more especially 
when it is narrower on one side, in front or behind. In these cases, when really as broad as long, it looks 
distinctly longer than broad. 
yt 2 
