FRONTINELLA. 49] 
Males. 
1. Mandibles with a small tooth on the outer anterior side towards the 
base of the basal segment. 
a. Patella of palpus with only one cusp-like process at its apex. 
Conductor of bulb divided into two curved branches apically, 
forming a long straight spur basally, its point extending backwards 
almost to the anterior margin of the tibia. . . . . . . « . deta, O. P.-Cambr. 
6. Patella of palpus with two cusp-like spurs at its apex. Conductor of 
bulb composed of a single branch apically, not produced basally . bicuspis, sp. n. 
2. Mandibles without a small tooth on the outer anterior side. 
a’. Patella and tibia of palpus of the same length approximately. 
a’. Bulb of palpus furnished with a broad, flat, falciform conductor 
closely connected with a more slender falciform embolus; basally 
the bulb has no spur. Apex of tarsal sheath with three stout 
spines on the inner margin . . . . ee . falculifera, sp. no. 
&°. Bulb of palpus furnished with a short canaliculate embolus ; basally 
the bulb bears a short stout spur. Apex of tarsal sheath without 
spines... se ew ee ee 6UnCata, Sp. Nn. 
6. Patella of palpus only half the length of the tibia 2 eo ew ew we ) 6tbialis, sp. n. 
Females. 
1. Abdomen more conically produced behind, above the spinners. 
a. Abdomen narrower and more elongate; dull olive-brown, with four 
small white spots along the sides. Vulva not presenting a central 
div.ding septum or black dises. Size much smaller . . . . uncata. 
6b. Abdomen broader, less elongate; black-brown, with two broad, white, 
longitudinal, lateral bands anteriorly and three or four transverse, 
oblique, lateral bands posteriorly. Vulva with a narrow, central, 
chitinous septum, having a round black disc on each side. Size 
much larger. . . . . . ~ . . « . beta. 
2. @ comer much less produced, conically, behind, above the spinners. 
. Vulva with a broad, central, convex, tongue-like piece, without a 
central anterior groove. Coloration of abdomen as in F. Jeta . . rustica, sp. n. 
b'. Vulva without a definite tongue-like piece, but with a deep central 
groove in the anterior half. Abdomen white dorsally, with a narrow, 
central, anterior, dark line and a black spot on the apex . . . . confinis,O. P.-Cambr. 
1. Frontinella leta. (Tab. XL. figg. 1, la-e, 3 ; 2,24, 2.) 
Linyphia leta, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 261, t. 35. figg. 10, 10 a-d (3), 
1l, lla-d(?)'. 
Type Q, androtype ¢, in coll. Godman & Salvin. Total length, 9 7:5, ¢ 5:5 millim. 
Hab. Mexico, Amula and Omilteme in Guerrero (H. H. Smith'). 
