TRACHELAS. 79 
©. Colour and general structure similar, except that tibia ii. has no cuspules beneath, even at its apex. 
Vulva consisting of two large oval concavities separated by a narrow septum, less than half their transverse 
diameter apart; the central septum disappearing posteriorly into the general concavity formed by the 
two posterior portions of the two concavities. The oviducts are distinct on the outer side of each 
concavity ; their orifices open into the anterior end of each concavity. 
Hab. Mexico, Omilteme in Guerrero (H. H. Smith). 
7. Trachelas bispinosus, sp. n. (‘Lab. VI. figg. 7, 7 a-d, ¢; 8, 8a-c, 2.) 
Type 3, cotype 9, in coll. Godman & Salvin. 
Total length 5 millim. 
3. Carapace and mandibles mahogany-brown, sternum a little paler. Legs i. and ii. orange-brown ; iii. and 
iv. paler. Abdomen clay-yellow, with a scutulate dorsal area. 
Carapace rugulose-impunctate, assuming the form of lines of granules converging towards the central fover. 
Sternum almost circular, only slightly longer than broad, granulose-impunctate, with a narrow smooth 
central longitudinal anterior area. Maxille with a blunt spur on the outer apical margin. Mandibles 
straight, not excavate, on the inner margin. Lower margin of fang-groove with four teeth. Tarsi, 
protarsi, and tibie i. and ii. cuspulate beneath, the latter to their base. Tibia iii. alone with anterior 
marginal row of tubercles. 
Eyes: posterior row recurved, centrals one and a quarter diameters apart, two from laterals. Anterior row 
procurved ; eyes equidistant, two-thirds of a diameter apart. Central anteriors slightly larger than 
central posteriors. 
Palpus: tibia one-half longer than broad, with a broad apical external process, about half the width of the 
segment, abruptly narrowed at the apex, and directed forwards and downwards. Bulb somewhat inflate 
basally, with, at the apex, two short, subsimilar, curved spines, their points directed upwards into the 
tarsal concavity. 
2. Colour and general structure as in the male, except that the maxille are evenly rounded on the outer 
anterior margin. 
Vulva: the area covered by the two pair of spermathece is much longer than broad ; the anterior pair larger, 
piriform, and inclined towards each other anteriorly; the posterior pair smaller, piriform, their small ends 
set towards each other transversely. The pair of orifices very small and black, set close together in the 
median line rather before the middle, in the centre of a deep concavity, whose anterior margin especially 
bears some long curving hairs, directed over the concavity. The oviduct is very variable in its course. 
The position of the orifices and the general character and position of the spermathecw, however, are 
probably constant. 
Hab. Panama, Bugaba (Champion). 
8. Trachelas truncatulus, sp. n. (Tab. VI. figg. 9, 9 a, 4,6.) 
Type, d, in coll. Godman & Salvin. 
Total length 5-5-7 millim. 
3. Carapace, mandibles, and legs i. and ii. very dark mahogany-brown, almost black; sternum a little paler. 
Abdomen dull clay-yellow. Legs iii. and iv. pale yellow-brown. 
Carapace impunctate. Lower margin of fang-grooves with four teeth. Mandibles not excavate on the inner 
margin. Maxille with a large triangular (or obtuse dentiform) prominence on the outer apical margin. 
Sternum one-fourth longer than broad, granulose-impunctate, with a central anterior smooth area. Femur, 
patella, tibia, and protarsi with a row of minute tubercles along the anterior margin. Protarsi and tarsi i. 
and ii. cuspulate beneath ; tibia i. cuspulate throughout; tibia ii. for two-thirds of its length with a single 
row of cuspules, Abdomen with a scutulate dorsal area. 
Eyes of posterior row recurved; centrals two diameters apart, three diameters from laterals. Anterior row 
procurved ; centrals half a diameter apart, one-fourth from the laterals. Central anteriors scarcely larger 
than central posteriors. 
