Pechham — Sinders of the Family Attidae. 311 



ing felix, 'prosper, faustus, cdhopilosus, vigeiis, ruber, nitidus, 

 laetahiUsj octopundatus, Umbatus Banks, cuprinus Tacz., and 

 tropicus. In all of these species the first leg is long, often 

 longer than the second by the tarsus, metatarsus and part, or all, 

 of the tibia. In several other species the first leg is longer 

 than the second by the tarsus and metatarsus, but in these all of 

 the legs are relatively short, there being no appearance of a long 

 first leg. 



1. Falces long, horizontal and parallel, felix and prosper. 

 The general appearance of these species is almost exactly 



alike, but the relative length of the legs is 1 4 2 3 in felix, and 

 1432 in prosper, and the palpi are perfectly distinct, the tube 

 being straight in felix and curved in prosper. 



2. Falces moderately long to long, and oblique, militaris, lim- 

 hatiis, nitidus and laetabilis. 



The falces of laetabilis^ are stout and round, less than twice 

 as long as wide, with two teeth on the lower side, and a long 

 apophysis from the middle of the inner edge of each f alx. The 

 first leg is longer than the second by the tarsus, metatarsus, and 

 nearly all of the tibia. There is no white band on the cephalo- 

 thorax. 



In nitidus^ and Umbatus the falces are long and rather slen- 

 der, more than twice as long as wide, and the first leg is longer 

 than the second by only the tarsus and metatarsus. Nitidus 

 has a white band around the lower edge of the cephalothorax, but 

 none on the upper sides, while Umbatus has the marginal band, 

 and v/ider ones running backward from the lateral eyes on to 

 the thorax. Militaris differs from the other three in having 

 white bands on the upper sides of the cephalothorax and across 

 the cephalic part above the first row of eyes. For a good draw- 

 ing of the falces of this species, see Emerton's New England At- 

 tidae, PL XVII, figs, lb, Ic. 



3. Falces swollen, vertical or slightly inclined, with white 

 hairs on the front face, albopilosus, vigens, faustus and octopunc- 

 iatus. 



Albopilosus is distinguished from vigens by its coloring, from 



^See Attidae of Central America and Mexico, PI. IV, fig. 6a. 

 2See Attidae of Central America and Mexico, PI. IV, fig. 8a. 



