372 ON THE PEDIPALPI OF NORTH AMERICA, 



C. PHAIODACTYLUS. — C. brunneo-fulvus ; cepbalotborace sparse punctato, medio leviter canaliculate, 

 antico et abbreviato et rotandato et nonnibil emarginato, postico transverse sulcato ; manibus cau- 

 daque venuste politis et pedibus nonnihil pilosis ; palpis robustis, angulis vel valde crenulatis vel 

 denticulatis, articuli tertii superficie antica spinulo unico (interdum duobus) ; manibus valdissime 

 tumidis, longis, indistinete octoplicatis ; digitis latis, robustissimis, modice brevibus, curvatis, mar- 

 ginibus opponentibus acute denticulatis ; pedibus flavis ; abdomine lasve ; cauda breve, cristis 

 superioribus obsoletis, superficie superiore nonnibil minute granulata ; articulo quarto haud carinato ; 

 articulo ultimo maximo, spiculo parvo sine spinulo basali ; pectinis dentibus 7 — 9. PI. 40, 

 fig. 3, 3a, 3 J. 

 C. pJiaiodactt/lus, Wood. Proc. Acad. Nat. Sci., April, 1863. 



The cephalothorax is not produced as far anteriorly as is commonly the case. 



It is impressed with a faint transverse groove at the position of the median ocelli, 



and with another, more distinctly defined, on its posterior third. These channels 



separate three pairs of slightly pronounced elevations, which successively decrease 



in size from the first. The first joint of the palpi has all of its margins armed with 



distinct obtuse denticules, excepting only the postero-inferior, which is rounded and 



concave, and crenate only on its proximal third. The third article is much larger 



than the second, and has only its anterior margins crenate. Its posterior surface 



as well as that of the hand, is sparsely and irregularly punctate. The anterior 



aspect of the hand is minutely tuberculate. The first joint of the mandibles is 



very long, almost always extending as far forward as the cephalothorax, and often 



much beyond it. The distal portion of these organs, with the " pincers," is black. 



The median eyes are placed upon a single black elevation in the middle third of the 



cephalothorax. The first two lateral ocelli are somewhat smaller than the median ; 



the third is much smaller ; the fourth is at right angles to the third, and is still less. 



The three anterior joints of the tail are short and rather broad. Their superior 



crests are entirely, and their supero-lateral almost, obsolete ; their inferior and infero- 



lateral are well marked and broadly crenate. All of the ridges of the fourth 



segment are obsolete. The penultimate joint is elongate and slender. Its lower 



surface is rough, and has two strongly, but obtusely denticulate, infero-lateral, and 



a single median inferior crest. The last segment is immensely swollen. Its distal 



portion is suddenly and very strongly contracted, and then inflated slightly again, so 



as to form a knob, as it were, on the base of the sting. 



Length of body, 1| inches ; of tail, 11 inches. 



Hab. — Utah Territory. Smithsonian Museum. M. McCarthy, Esq. 



Vaejovis carolinus. — " Gelbraun, dunkelbraun gefleckt; die Taster rostfarbig mit rundrippigen 



H'tlnden ; der Scbwanz ziemlicb dick, oben und unten mit geziibnten Kielen. 

 ■ "Lang des Vorder-und Hinterleibes 4f", des schwanzes &§'"■ 



"Der Vorderleib binten breit, im Ganzen nieder, oben etwas flacb und schwielig, fast glanzlos; die 

 Mittelfurcbe vom Vorderrande bis zum Tlinterrande durcbziebend, ziemlicb tief, die zwei Kiele auf dem 



