PARAVONONES. 
a 
iii. 6; iv. 7, Eye-tumulus, viewed transversely, twice as long as broad. Segment 3 of dorsal scutum 
with a pair of short cusps. Coxa and trochanter of leg iv. with an apical spur. Femur iv. armed 
apically with denticles of various sizes and disposition, also protarsus iv. in some cases. Body and legs 
more or less covered with minute tubercles. Dorsal scutum much dilate laterally, forming an almost 
circular plate, segments 4 and 5 being, however, in some species more elongated. 
In the ¢$ of certain species, P. quadratus, P. biserratus, and P. claviger, the first and second ventral opistho- 
somatic segments are much longer than the distance between the spiracles; but in P. compressus and 
P. incrassatus they are equal. Mandibles not enlarged. Palpi similar in general character to those of 
the allied genera, 
Five species occur in the collection which may be distinguished as follows :— 
Males. 
A. Protarsus iv. with a series of separate specialized denticles on the inner 
side. 
a. Femur iv. with a series of denticles on each side in the apical third. 
Protarsus iv. without a larger, more conspicuous, spur at the apex . . biserratus, sp. n. 
6. Femur iv. without a series of denticles in the apical third. Protarsus iv. 
with a larger, more conspicuous, denticle or spur at the apex. . . . quadratus, sp. n. 
B. Protarsus iv. without separate specilized denticles. 
a’. Femur iv. geniculate and enlarged at the apex, set with dentiform 
tubercles . 2. 2. 1. 1 ew ee ee . claviger, sp. n. 
b'. Femur iv. incrassate, but not geniculate and enlarged at the apex. 
a’. Femur iv. flattened or compressed beneath, concave . . . . . . Ccompressus, sp. n. 
6’. Femur iv. not compressed and concave beneath, simply incrassate 
throughout and granulose. . . . . . 1. . . 1. ws .).) e) tnerassatus, sp. n. 
Females. 
A. Dorsal scutum without tubercles on segment4 . . . . . . . . . compressus. 
B. Dorsal scutum with a pair of tubercles on segment 4, as well as a pair of 
very minute ones on segment3 . . . . 2 2. ew ew ww. tnerassatus. 
1. Paravonones biserratus, sp.n. (Tab. LII. figg. 1, 1a, 0, 3.) 
Type, d, in coll. Godman & Salvin. Total length, 3, 5°5 millim. (excl. mand.); femur iy. 5 millim. 
g. General characters similar to those of P. quadratus. Femur iv. is not, however, so strongly curved, and 
presents on the inner side a series of small tubercles starting from the base, becoming longer in the apical 
third, forming a double row of short denticles; the outer side is similarly curved, but the terminal 
denticles form a single series only. Protarsus iv. on the inner side with a row of widely separate denticles, 
but without the larger apical denticle characteristic of the above-named species. The tergal third 
segment has a pair of low tubercles only. Tarsal segments, i. 5, 1 and 2 dilate; ii. 9; ili. 6; iv. 7. 
Hab. Mexico, Amula in Guerrero (1. H. Smith). 
Two males. 
2. Paravonones quadratus, sp.n. (Tab. LIT. figg. 2, 2a, 6, 3.) 
Type, ¢, in coll. Godman & Salvin. Total length 8 millim. (exel. mand.) ; femur iv. 6°5 millim. 
3g. Eye-tumulus low, transverse-oval, scarcely twice as broad as long, sometimes plain, sometimes with warts, 
but without spines. Whole body smooth, without warts. Tergal scutum with even less indication of 
