56 ARANEIDEA. 
2. Gnaphosa decepta. 
Gnaphosa decepta, Banks, Proc. Calif. Acad. Sci. (3) i. p. 221, t. 18. fig. 14 (1898) *. 
©. Total length 7 millim. 
Hab. Mexico, Tepic (Banks'). 
BONNA. 
Bonna, O. P.-Cambridge, Biol. Centr.-Amer., Arachn. Aran. i. p. 249 (June 1898). 
Type B. fidelis, O. P.-Cambr. 92. Immature. 
The two rows of eyes wide apart, as in Cesonia, but less so, while the eyes are larger; posterior row 
procurved, eyes equal, centrals one and a half diameters apart, two diameters from the laterals; anterior 
row procurved, lateral eyes slightly larger, centrals two diameters apart, one from the laterals ; central 
quadrangle longer than broad, slightly narrower behind, laterals two and a half diameters apart; 
laterals of both rows one and a half diameters apart. Clypeus, opposite the lateral eyes, equal to one 
diameter of an anterior lateral eye. ; 
Inferior margin of fang-groove without teeth; superior margin with two small serrations. Maxille long, 
quite straight along the inner margin, emarginate on the outer side, only deeply impressed across the 
middle, broadly rounded at the apex. Sternum oval, longer than broad. Legs similar to those of 
Cesonia. Anterior tarsi and protarsi and posterior tarsi scopulate. Tarsal claws two, claw-tuft present. 
Anterior protarsi with a pair of stout spines near the base beneath ; anterior tibie with two stout spines 
beneath, one towards the middle, the other at the apex. Posterior tibiew spinose beneath, protarsi 
numerously spinose above and below. ‘Tibia iii. with a stout spine also towards the base above. 
1. Bonna fidelis, 
Bonna fidelis, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. 1. p. 250, t. 33. figg. 1, 1 a-e(2)°. 
Type, 2, in coll. Godman & Salvin. . 
Hab. Mexico, Teapa in Tabasco (H. H. Smith?). 
CESONIA. 
Herpyilus, Hentz, Bost. Journ. Nat. Hist. v. p. 454 (1847) (part.). 
Pecilochroa, Emerton, Trans. Conn. Acad. viii. p. 174 (1889) (part.). 
Cesonia, E. Simon, Hist. Nat. Araign. ed. 2, i. p. 375 (1893). 
Helvidius, O. P.-Cambridge, Biol. Centr.-Amer., Arachn. Aran.i. p. 220 (1896). 
Type C. belineata (Hentz). 
Rows of eyes widely separate ; posterior row straight, scarcely broader than the anterior row, eyes subequal, 
centrals further from each other than from the laterals ; anterior row (seen from above) procurved, (seen 
from in front) straight, almost equal, less than one diameter apart, equidistant. Clypeus as high as one 
and a half diameters of an anterior central eye. Maxille impressed in the centre; labium nearly twice 
as long as broad. Lower margin of fang-groove without teeth ; upper margin with three short cusps. 
1. Cesonia lugubris. (Tab. IV. fig. 17, 2.) 
Helvidius lugubris, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 221, t. 27. figg. 1, la-e (2 y%, 
Cesonia lugubris, O. P.-Cambr. loc. cit. p. 281 ?. 
Type, 2, in coll. Godman & Salvin. 
Hab. Mexico, Amula in Guerrero (H. H. Smith). 
