PACHYLOMERUS.—BOTHRIOCYRTUM. 9 
2. Pachylomerus rugosus. 
Pachylomerus rugosus, Karsch, Zeitschr. fiir ges. Naturw. liii. p. 388 (1880) '; E. Simon, Act. Soe. 
Linn. Bord. xliv. p. 327 (1892) *. 
Hab. Costa Rica}. 
3. Pachylomerus zebrinus, sp.n. (Tab. I. figg. 8, 8a, 3.) 
Type, 3, in coll. Godman & Salvin. 
Adult male, length 10 millim. 
Carapace and mandibles deep shining black. Sternum, mouth-parts, and legs dull yellow-brown, paler 
towards the apex. Pedipalps similarly coloured. Abdomen dark brown-black, with a pair of pale dorsal 
spots behind each shoulder, followed to spinners by five narrow transverse recurving pale bars. 
Carapace finely and entirely granulate. Thoracic fovea strongly procurved. Labium and coxe of pedipalp 
studded with several cuspules. Tibia iii. three and a half times longer than broad, slightly impressed at 
the base above, armed at the apex on the outer, inner side and above with upwards of ten short stout 
spines. Protarsus iii. spinose above, armed at the apex above with four rather longer stouter spines. 
Pedipalp similar in general form to that of others of the genus. ‘Tibia at least four times longer than 
broad. Bulb globular, bilobate, its apex very long, sinuous, and filiform, directed abruptly outwards. 
Tarsus iv. with five stout spines on the outer side at the apex, a not oblique row of bristles on the inner side. 
Hab. Guatemata (Sarg). 
A single adult male. 
Group CTENIZE. 
There is one genus only of this group to which species taken in the Central- 
American region are referable, viz. Bothriocyrtum, Sim. This genus, as well as the 
others belonging to the group, can be recognized by the absence of the tarsal scopula_ 
in the female sex. The type of Bothriocyrtum is B. californicum, O. P.-Cambr., originally 
described under Céeniza, from California. 
BOTHRIOCYRTUM. 
Bothriocyrtum, E. Simon, Act. Soc. Linn. Bord. xlix. p. 314 (1891). 
1. Bothriocyrtum fabrile. (Tab. I. figg. 1, la-e, 2.) 
Bothriocyrtum fabrile, EK. Simon, Act. Soc. Linn. Bord. p. 827 (2)’. 
Type, 2, in coll. K. Simon, Paris, 
Hab. Mexico, Santiago (Forrer 1). 
The type of this species has been kindly submitted to me by M. Simon. It is 
distinguished from other allied genera from the Palearctic and Paleotropic regions by 
the almost horizontal clypeus, which is twice as broad as the transverse diameter 
of the anterior laterals. The lateral anteriors and lateral posteriors are separated by 
a space much less than the longitudinal diameter of the latter, but equal to the 
transverse diameter. Protarsi i. and ii. bear a few spines beneath, in addition to the 
BIOL. CENTR.-AMER., Arachn. Aran., Vol. II., September 1897. of 
