ON THE PEDIPALPI OF NORTH AMERICA. 375 



Fam. III. PHRYNID^. 



Dens mandibularis in plana vcrticalc movens. Abdominis sine appendice. Pedum par anticum elongatis- 

 simum, antenniforme. 



Gen. PHRYNUS. 



Oculi 8. Oculi laterales utrinque, 3, in serie triangulare dispositi. 



The cei^Iialotborax in this genus is very broad and more or less renitbrm. It is 

 perhaps not quite so rough as in the genus Phrymis. The important specific cha- 

 racters are mostly drawn from the maxillary palpi. There is as yet no species 

 known to exist within the United States ; but we append the description of an 

 unknown form brought from Lower California by Mr. Xantus. 



P. ASPERATirES. — P. dilute aurantiacus saturate rubido-brunneo maculatus; cephalothorace lato, reniforme, 

 abdomineque tuberculis parvis sparsis et granulis minutis numerosis asperatis ; palpis magnis, 

 latis, nonnihil semi-cylindratis ; articuli secundi superficie antica et spinulis parvis numerosis et 

 uno vel duobus majoribus armata ; articuli tertii margine supeviore spinis 4, inferiore spinis 5 ; articuli 

 tertio quartique superficiebus posticis tuberculis parvis spinosis in seriebus rectis dispositis armatis • 

 illius margine superiore ultimo spinis maximis 3 et 2 — 3 modicis instructo ; margine inferiore spinis 

 magnis 2 et 2 — 3 parvis armato; articulo quinto spina maxima uuiea et spinulis modicis duobus 

 instructo ; femoribus tuberculis spinosis numerosis asperatis. 



P. asperatipes, Wood. Proc. Acad. Nat. Sci., April, 1863. 



The color of our single specimen is a very light orange. The cephalothorax has 

 a median longitudinal sulcus distinct anteriorly, but evanescent posteriorly. A 

 short distance behind the centre of the cephalothorax is a well defined transverse 

 groove, extending nearly across one-third of its breadth. Posterior to this, and 

 connected with it by the median sulcus (here very well marked), is a transverse 

 furrow similar to the other, but only about one-third its length. The three sulci 

 ai'e of a dark-brown tint. Besides these, there are on each side of the cephalothorax 

 four dark, but more or less obsolete grooves. At the position of the lateral eyes 

 on each side there exists a dark-brown spot, and between them and the anterior 

 transverse groove is a pair of similarly colored round depressions. The maxillary 

 palpi are of a more decided orange than the body. The second joint has its 

 anterior face armed with eight or ten very small spines or spinous tubercles, and 

 one or two larger ones. The spines on the lower margin of the third joint are 

 longer than those on the upper. On each, the two nearest the body are much 

 larger and more closely approximated than the others. Between the margins are 

 a few very small spinules. The spinous tubercles on the upper portion of the 

 posterior surface are more numerous than those on the- lower. The fourth joint is 



