TRACHELAS. 77 
one-third longer than broad, granulose-impunctate (each hair springs from a cup-like cavity whose edges 
form a low granule), obtusely pointed behind, scarcely produced. 
Palpus: tibia of palpus twice as long as broad, with a very small spur on the outer apical margin, just below 
the middle. Bulb elongate piriform, not basally much inflated, bearing at its apex a single broad sinuous 
lanceolate pointed spine. Legs: tarsi and protarsi i. and ii. cuspulate beneath; tibie i. and ii. with 
scattered cuspules extending over the apical half. Leg iii. without anterior marginal row of tubercles. 
2. Structure as in the male, except that the mandible is not excavate on the inner side, or only very slightly, 
while the tibie of i. and ii. are cuspulate almost to the base. ; 
Vulva consisting of two deep concavities separated from each other by a space rather wider than their diameter, 
themselves situated about one and a half diameters from the posterior margin. Anteriorly lie, just beneath 
the surface, two large oval-elongate brown vessels (spermathecz) covering a space nearly one-half broader 
than that covered by the two concavities together, and nearly twice longer.—N.B. The form of the vulva 
is very variable. 
Hab. Mexico, Amula, Orizaba, Teapa (H. H. Smith), Jalapa (M. Trujillo). 
It is highly probable that this form will prove to be identical with 7. ruder, Keys., 
from N. America, and with 7’. mexicanus, Banks. But although the type of the former 
is now before me, I cannot feel absolute confidence in their identity, without the males. 
A fairly representative series of this species from Massachusetts would settle the point 
at once. The figure given by Banks of the vulva of his 7. mexicanus is not detailed 
enough to furnish sufficient evidence for identification. One must therefore leave the 
question in abeyance and for the time being characterize both male and female under 
another name. 
8. Trachelas transversus, sp. n. (Tab. VI. figg. 1, la,¢ ; 2,2.) 
Type ¢, cotype 2, in coll. Godman & Salvin. 
3. Total length 6-7 millim. 9. Total length 7-5-8 millim. 
3 2. Carapace and mandibles mahogany-brown ; legs orange-brown, first two pairs darker. Abdomen clay- 
yellow, with, in the male, a rosy scutulate dorsal area, with the usual four muscular scars. Sternum and 
mouth-parts pale mahogany-brown. Carapace and mandibles rugulose-impunctate ; the latter excavate 
on the inner margin beneath. Lower margin of fang-groove with two teeth. Posterior row of eyes 
strongly recurved, centrals one and a half diameters apart, two and a half from laterals. Anterior row 
procurved ; centrals three-fourths a diameter apart, slightly less from laterals. Central anteriors and 
lateral anteriors subequal. Clypeus Jess than a diameter of an anterior central eye. 
Sternum granulose-impunctate, with or without a smooth narrow central area, about one-fourth longer than 
broad, obtusely pointed behind. Maxille evenly rounded on the outer apical margin. 
Legs: tibiz, protarsi, and tarsi i. and ii. cuspulate beneath, tibia ii. only slightly. Leg iii. without any 
anterior marginal row of tubercles. 
Palpus: tibia (in profile from outside) much broader across the apex than across the base, as broad as long. 
Apical spur stout, longer than in 1. spinulatus, and slightly curved upwards. Apex of bulb with a 
transverse oblong piece, its outer anterior angle produced into a stout spine. Tarsus terminating broadly 
and obtusely at the apex. 
@. Structure similar to that of the male, except that the mandible is not excavate on the inner side, and the 
cuspules beneath legs i. and ii. are much less numerous. 
Vulva: the external orifices of the oviduct are small and set wide apart, at least four diameters, close to the 
anterior margin of a broad transverse oval concavity. The oviducts can be noted looped over in front of 
the orifices. The two pairs of spermathece are large: the anterior pair elongate-oval, in contact along 
the median line ; the posterior pair are more or less symmetrically disposed behind, forming the posterior 
