CYCLOSA. 495 
8. Cyclosa trifida, sp.n. (Tab. XLVII. figg. 7, 7a, 2.) 
Type, 2, in coll. Godman & Salvin. Total length 5 millim. 
Hab. Guatemata, Cahabon (Sarg). 
The abdomen of this species is broad, elongate, and parallel-sided, having four 
very small tubercles at the apex, where it appears to be transversely truncate. The 
vulva is characteristic, though similar in general structure to that of several allied 
forms. 
9. Cyclosa bifurca. (Tab. XLVII. figg. 8, 8 a-d, 2.) 
Cyrtophora bifurca, McCook, Proc. Acad. Phil. 1887, p. 3427. 
Cyclosa bifurca, McCook, Amer. Spid.i. p. 128; ii. pp. 189, 372, 376°; iii. p. 227, t. 17. figg.10( 3), 
9, Qa-d (?)*; Marx, Proc. U.S. Nat. Mus. xii. p. 549°. 
Cyclosa fissicauda, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 49, t. 8. figg.7, 7 a-c (?) 
(1893)°; Keyserl. Spinn. Amer. iv. p. 274, t. 14. figg. 208, 208 a, 6 (¢)”. 
Type 2, androtype ¢, of C. bifurca in coll. McCook ; of C. fissicauda in coll. Godman & Salvin. 
Carapace very convex behind, thoracic portion separated from the cephalic by a deep semicircular groove. 
Posterior eyes half a diameter apart, smaller than the anteriors; posterior row slightly recurved. 
Lateral eyes almost in contact, anteriors distinctly smaller. Central quadrangle narrower behind, 
broader than long. Patella of palpus with a single anterior spine. Femora without spines beneath. 
Abdomen apically bifid, with four conical warts, the first pair behind the shoulders, the second wider 
apart and further back. The vulva consists of an oblong white area above, deeply grooved transversely, 
towards its anterior margin, forming a thin chitinous marginal plate; posteriorly it overhangs slightly, 
and the surface is here marked with a deep V-shaped groove. 
Hab. Nortn America, Florida !~°.—Mexico, Orizaba (H. H. Smith); GuateMata’, 
Dolores, Chapallal, Chisec (Sarg °). 
E. Simon (Hist. Nat. Araign. édit. 2, i. p. 795) has placed this species under Larinia, 
but nearly every character given for the recognition of that genus is wanting in the 
type (2?) of C. fissicauda. It has the carapace very convex behind; the central eyes 
not subequal, the anterior side of the central quadrangle not nearly double the width 
of the posterior; the lateral eyes very distinctly unequal; and there is no “uncus” to 
the vulva at all. Unfortunately, I have been unable to find a male example in the 
collection before me, and cannot say therefore whether the coxa i. has the hook or 
not. But the female evidently comes near Cyclosa, where I leave it for the present, 
though it may have to be removed at some future time. 
10. Cyclosa walckenaeri. (Tab. XLVII. figg. 9, 9 a-d, ¢.) 
Turckheimia walckenaerii, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. pp. 47, 269, t. 8. 
figg. 6, 6a-c ( 2) (1889)’. 
Epeira walckenaerii, Keyserl. Spinn. Amer., Epeiride, p. 98, t. 5. figg. 78, 73 a-c (2), 73 d-f(s)’. 
Cyclosa walckenaerii, McCook, Amer. Spid. ili. p. 226, t. 17. figg. 1, la-d (?), 2, 24,6 (3)”. 
