12 ARANEIDEA. 
ENRICO. 
Enrico, O. P.-Cambridge, Biol. Centr.-Am., Arachn. Aran. i. p. 157 (1895). 
1. Enrico mexicanus. (Tab. I. figg. 7, 7 a, 6, 2.) 
Enrico mexicanus, O. P.-Cambr. loc. cit. p. 157, t. 19. figg. 8, 8 a-c (2) *. 
Type, 2, in coll. Godman & Salvin. 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith +). 
EUCTENIZA. 
Eucteniza, Ausserer, Verh. zool.-bot. Ges. Wien, xxv. p. 148 (1876). 
Favila, O. P.-Cambridge, Biol. Centr.-Am., Arachn. Aran. i. p. 156 (1895). 
1. Eucteniza mexicana. (Tab. I. figg. 2, 2a-f, 2.) 
Eucteniza mexicana, Auss. loc. cit. p. 149, t. 5. figg. 8, 9°; H. Simon, Hist. Nat. Araign. p. 110 
(1892); Act. Soc. Linn. Bord. xliv. p. 328 (1892) *. | 
Type, 2, in Brit. Mus., ex coll. Keyserling. 
Measurements of type:—Total length 18°75 millim. Oarapace 5°5x4; ceph. area 4; stern. 3:5x2°5; 
pedipalp 9. Legs: 1.13; ii. 5; il. —; iv. 14. 
Legs. Protarsi and tarsi i. and ii. scopulate beneath. Pedipalp: tarsus with single claw, unidentate, with 6-7 
irregular spines beneath; tibia with 8 spines towards apex on inner side. Tarsus i. with 2 small spines 
towards apex, beneath; protarsus i. with 6 irregular spines beneath (3 at apex, 2 on outer side, 1 on 
inner side), Tarsus ii. with 2-3 small spines towards apex, beneath; protarsus ii. with 6 irregular 
spines beneath (3 at apex, 2 on outer side, 1 on inner side). Tibie i. and ii. without any spines. Patella iii. 
with numerous spines above and a row along apical margin, with a row also on posterior side. Tibia iii. 
with 6 spines on anterior side and a row of numerous spines along apical margin; 2 long spines and 3 on 
apical margin beneath. Protarsus iii. with 6—7 spines on each side, 3 spines and 4 on apical margin 
beneath. Tarsus iii. with 1-2 small spines on anterior side and 1-2 beneath. Femur iv. with 4 spines 
on apical margin above; patella iv. with 6-7 spines on anterior side towards base. Tibia iv. with no 
spines above or on sides, 3 bristles beneath. Protarsus iv. with no spines above, with 5 spines beneath, 
and 3 longer ones on apical margin beneath. Tarsus iv. with 7-8 short spines beneath. 
Eyes. Set in two rows, equal in width; anterior procurved, posterior recurved. Anterior centrals 3? of a 
diameter apart, one fuil diameter from laterals. Laterals larger, their longitudinal diameter 3 greater 
than diameter of anterior centrals. Central posteriors circular-piriform, over four diameters apart, one- 
quarter diameter from centrals, the same from lateral posteriors; diameter of lateral posteriors slightly 
greater than that of central posteriors, themselves situated within 4 a diameter of laterai anteriors. 
Central ocular quadrangle two and a half times broader than long, anterior side much narrower than 
posterior. Anterior centrals one diameter from anterior margin; laterals one-quarter a diameter from 
anterior margin. 
Carapace one-half longer than broad, narrowed behind; cephalic area two-thirds of carapace, well marked, 
convex, broad in front, gradually narrowed to central fovea, which is deep and strongly procurved ; 
thoracic indentations deep. 
Mandables stout, flat on inner side, externally and dorsally convex. Apical sixth of basal joint armed with 
numerous cusps on inner margin, becoming longer and stouter at apex, five especially longer on inner 
apex, others smaller along apical margin, none on dorsal apical disc. Inner margin of fang-groove with 9 
stout denticles, outer margin with 14 small denticles, irregularly situate. 
Sternum (including labial plate) not quite twice its breadth; attenuate in front, broader behind. The point 
of its greatest width opposite coxe iii.; from this point abruptly narrowed and terminating between 
coxe iv. in a point, One pair of sigilla distinctly marked opposite coxe ii.; another, scarcely visible, 
