404 Mr. F. P. Cambridge on 



4. Ctenus tarsalis, sp. ii., ? . (PL VII. fig. 0.) 



Type, $ , in coll. O. P. C, Bloxworth. 



Ilab. Rio Parana, Argentina. 



?. Tot. len. 18 mm., carap. 8x6; legs i. 30, ii. 26'5, 

 iii. 23, iv. 29; pat. + tib. i. 10-75, ii. 9-5, iii. 7-5, iv. S'O. 



Colour. Carapace, legs, and sternum light red-brown, 

 clothed with grey pubescence. Tibia3, ])rotarsi, and tarsi of 

 the first two pairs of legs, and slightly less so of the third 

 and fourth pairs, dark brown. Abdomen dull clay-red, 

 clothed with grey pubescence, having a double row of fivo 

 dark spots on the second half of the central dorsal area. 

 Ventral area unicolorous clay-red. 



Structure. Carapace horizontal above in profile. Second 

 row of eyes procurved, the anterior margins of the centrals 

 in a line with the centres of the laterals. Ocular quadrangle 

 slightly longer tiian broad, slightly narrower in front; central 

 ])Osteriors half a diameter apart, the same distance from the 

 laterals ; anterior centrals slightly smaller than the poste- 

 riors, two thirds of a diameter apart ; clypeus equal to two 

 thirds the diameter of an anterior central eye. 



A figure of the vulva is given on Plate VIF. 



A single adult female was taken by Mr. Rogers on the 

 Rio Parana, Argentina. 



5. Ctenus veriebratus, sp. n. (PI. VII. fig. 11.) 



Type, ? , in colL Brit. Mus. 



Bab. Taquara, Brazil. 



? . Tot. len. 26 mm., carap. 11x8; legs i. 30, ii. 3)5, iii. 29, 

 iv. 38; pat. + tib. i. 12"5, iii. 9"75, iv. 11'5 ; protarsus i. 6*7.), 

 iv. 9. 



Colour. Carapace, legs, and sternum red-brown, clothed 

 with fine yellow-grey pubescence (the clothing of the carap ice 

 is worn off, and it is not possible to say how the pubescence 

 is distributed, whether in bands or not). Abdomen brown 

 above, with a central pale yellow dorsal band, which on each 

 side divagates into six dentate points, the posterior being more 

 extended. Ventral area ])ale yellow, unicolorous, without 

 any while lines or spots. 



Structure. Carapace horizontal above in profile. 



Eyes. Second row procurved, the posterior margins of the 

 laterals being aligned with a point anterior to the centre of 

 tlie CL-ntrals (but ordy very slightly anterior to it). Central 

 posteriors half a diameter apart, three fourths from the ante- 

 rior laterals, slightly more than half a diameter frum the 



