166 MR. F, PICKARD-CAMBRIDGE ON NEW SPIDERS. [Feb. 17, 
Fam. SENOCULIDS, 
Genus Senocuuus Taczanowski. 
1872. Senoculus Taéz. Hor. Soc. Ent. Ross. ix. p. 106.—Type, 
S. maronicus. ; 
1873. Labdacus O. P.-Cambr. Proc: Zool. Soc. Lond. p, 118.— 
Type, LZ. monastordes. 
1880. Platyctenus Keys. Verh. z.-b. Ges. Wien, xxix. p. 338, 
note. Nom. nov. for Senocwlus (nom. inappro. sec. Keys.). 
1880. Stenoctenus Keys. Verh. z.-b. Ges. Wien, xxix. p. 340.— 
Type, S. gracilis. 
1883. Weothereutes Holmb. Bol. Acad. Nac. Ciene. Cordoba, v. 
p- 35.—Type, V. darwint Holmb. 
In a former paper, ‘‘ Cteniform Spiders from the Lower Amazons 
&e.,” Ann. Mag. Nat. Hist. (6) xix. p. 90, Jan. 1897, I have tabu- 
lated the characters of the known species of this genus so far as 
I could draw reliable characters from the existing descriptions. 
The table is here re-modelled and includes additional species 
from Central America, published in the ‘ Biologia Centvrali- 
Americana,’ and a new species occurring in the British Museum 
Collection, of which a diagnosis is given below. I have not seen 
S. parallelus Simon, but it is certain that my example from the 
Lower Amazons belongs to that species, since M. Simon has kindly 
compared a figure of the vulva with that of his own type. 
The following is a list of the species already published :-— 
1872. S. maronicus Tacz., 2, St. Laurent de Maroni. Hor. Soe. 
_ Ent. Ross. rx. p. 106, t. in. fig. 4. 
1873. S. monastoides (O. P.-Cambr.), 9, Brazil, Rio Grande. 
P. Z.8. Lond. p. 118. 
1879. S. rubromaculatus Keys., 9, Peru. Verh. z.-b. Ges. 
Wien, p. 339, pl. iv. fig. 30. ey 
1880. S. plumosus (K. Sim.), 9, Brazil, Para. Bull. Soc. Zool. 
Fr. p. 154. 
1880. S. purpureus (EK. Sim.), 9, Panama. Bull. Soc. Zool. Fr. 
5 UD) 
1880. S. parallelus (E.Sim.), 9, Brazil, Teffé. Bull. Soc. Zool. 
Fr. p. 156. 
1880. S. rujficapillus (HE. Sim.), ¢, Brazil, Para. Bull. Soe. 
Zool. Fr. p. 154. 
1880. WS. tricolor (Ki. Sim.), ¢ 2, Brazil, Teffé. Bull. Soc. Zool. 
Fr. p. 153. 
1880. S. gracilis (Keys.), 9, Peru, Aimable Maria. Verh. z.-b. 
Ges. Wien, p. 341, t. iv. fig. 29. 
1883. S. darwint (Holmb.), 9, Formosa, Chaco, Arg. Rep. 
Bol. Acad. Nac. Ciene. Cordoba, v. p. 35. 
1896. S. prolatus (O. P.-Cambr.), ¢ 92, Mexico, Atoyac. Biol. 
Centr.-Amer., Arach. Aran. i. p. 218, t. 28. figs. 3, 3a—/( @ ). 
1897. S. pallidus (F. P.-Cambr.), ¢, Brazil, Rio Janeiro. Ann. 
Mag. Nat. Hist. (6) xix. p. 92, pl. iv. fig. 5 (sub 
Stenoctenus). 
