72 Mr. F. O. P. Cambridge on Cleniforni Spiders 



Tahle of Neio- World Genera of the Family Cteaidse*. 



Table of Genera. 



A. Tibiae i. and ii. with 4 or 5 pairs of spines be- 



neath. Protarsi i. and ii. with 3 pairs of 

 spines beneath t. 



I. Tibife i. and ii. with 5 pairs of spines beneath ; 



no lateral spines in the female sex (appa- 

 rently always present in the males). 1 — 1 — 1 

 dorsal spines on tibite iii. and iv. Two late- 

 ral spines on patelhe iii. and iv. Lower 

 margin of fang-groove Avith 5 teeth J. 



a. Second row of eyes straight or more or less 



procurved Cieiius §. 



h. Second row of eyes distinctly recurved .... Phoneutria, Party ||. 



II. Tibife i. and ii. with 4 pairs of spines beneath ; 



females, as well as males, with two pairs of 

 lateral spines, basal and distal. No dorsal 

 spines on tibia? iii. and iv. No spines on 

 patellte iii. and iv. Lower margin of fang- 

 groove with 4 teeth. (Second row of eyes 



strongly procurved.) C'upiennius, Sim. 



Protarsi i. and ii with 3 pairs of spines 



beneath, 2 pairs of lateral spines, and 1 



small apical spine beneath. 



B. Tibia} i. and ii. with 7 pairs of very long spines 



beneath. Protarsi i. and ii. with 7 pairs of 



long spines beneath Caluctenus, Keys. 



The ailinities of the genua Thmimasia, Perty {T. senilis), are very 

 doubtful, the figure of the eyes alone oll'ering no sure criterion, while the 

 tigure of the spider seems to suggest Lycosid affinities. 



* I omit Zeptoctenus, L. K. (to which genus a single species from 

 Costa Rica has been assigned by Simon), since I do not know the genus 

 at all, while Microctenus, Keys., is included under L'tinus in Bras. Spinn. 

 I8'.)l,Keys. 



t In these calculations are included the small apical spines ; care must 

 be taken not to include a lateral spine, nor to exclude a lower spine, 

 slightly inclining to a lateral situation. 



X The lifth tooth at the basal angle of the fang-groove is in this group 

 verv small, and may easily escape notice, but is always, in nil -specimens 

 which liave come before me, unmistakably present, except in a few in- 

 stances of individual abnormality. In the four-toothed lorms there is no 

 trace of this denticule. 



§ The type of Ctcnus, "Walck. — C. f/win/s— exhibits, according to bis 

 figure (Tai)l. Aran. ISOo, pi. iii. fig. 2l'), the .straight second row of eyes 

 with a labium longer than broad (lig. 21). His diagnosis of the genus 

 also states that the second row of eyes is straight. 



II Tliere is no evidence that the true I'livneutria fera of Perty pos- 

 .sessed the characters included under diagnosis A, the only recorded 

 character being that set down at b. 



