PHALANGES OF THE UNITED STATES. 35 



small ones on their distal portion, especially at the metatarsal joints. 

 Penis slender, proximally subcylindrical, then flattened, and slightly 

 expanded, then rapidly expanded into a broad, somewhat circular, 

 very thin, alate portion, then suddenly contracted and bent at an 

 obtuse angle, ending in a very fine point. 



Length of body, #,0.25; ?,0.3. Length of legs, $, (1) 0.5, (2) 

 0.8, (3) 0.5, (4) 0.7; ?, (1) 0.6, (2) 0.9, (3) 0.6, (4) 0.8. 



The ground color of the dorsum of this species is a rather light 

 brown, but the numerous black tubercles give it a much darker appear- 

 ance ; where these are wanting, the light brown appears as little dots 

 or spots. The sexes do not differ materially, except in point of 

 size. / 



REMARKS. I have received a large number of speci- 

 mens of this Harvest-man, collected by Dr. Lincecum, in 

 South Texas, also two or three specimens taken in Ne- 

 braska, by Prof. F. V. Hayden. With the Texan speci- 

 mens were three phalangia of very different appearance, 

 which, however, appear not to be specifically distinct. 

 The size is much less than in the others, and the dor- 

 surn and proximal portions of the palpi and legs are of a 

 deep uniform black ; otherwise, the characters are as in 

 the preceding. 



The form just described has been recognized as P. 

 nigrum Say, but as there are some slight disagreements 

 with the description of that authority, and the localities 

 are widely separated, it is possible that it is a distinct 

 species. Eor this reason the essential portion of the 

 original description of Say is appended. 



"Body ovate, a little dilated each side behind the posterior feet, 

 blackish, with a few obsolete paler spots, above and beneath granu- 

 lated, granules spherical, irregularly placed in somewhat reticulated 

 lines ; ocular tubercle destitute of spines, with obtuse granules ; cly- 

 peus prominent, somewhat elevated ; feet short, fuscous, whitish at the 

 .base; second pair hardly four times as long as the body, and, with the 

 first pair, armed with a prominent, cylindric, obtuse spine behind the 

 basal joint; third pair with a similar spine before; pectus whitish; 

 venter blackish. 



" Length, female nearly one-fifth of an inch. Not uncommon in the 

 Carolinas and Georgia." 



