NATURAL SCIENCES OP PHILADELPHIA. 107 



A younger specimen has the plumage above not quite so bright, and the 

 under of a lighter brown, ashy on the middle of the abdomen and on the throat. 

 Length to end of tail about 8 in. ; wing 4f ; tail 2 ; bill 1 ; tarsi If. 

 Habitat. Guatemala. 



3. Aramides axillaris. 



Chin and throat white, entire head besides, neck, breast and abdomen, of a 

 bright chestnut-red, lighter on the sides of the head ; lower part of abdomen 

 and thighs dark greyish-cinereous ; upper part of back bluish-cinereous, mid- 

 dle of back olive-green ; rump deep chocolate-brown, deepening to brownish 

 black on the tail coverts ; tail deep brownish-black ; primaries bright cinnamon- 

 red, slightly dusky at their ends ; the secondaries are liver-brown on their 

 inner webs, and on the outer greenish olive-brown ; the tertials and wing 

 coverts are of the same color as the back ; under wing coverts and axillaries 

 black, narrowly banded with white ; sides under the wings and under tail 

 coverts brownish-black ; bill dusky-olive on the sides for two-thirds its length, 

 the remainder yellowish white ; legs and feet clear vermilion, of a rather light 

 color, and in the specimen before me translucent. 



Length about 13 in. ; wing 6 ; tail 2| ; bill If; tarsi 2 J. 



Habitat. Barranquilla, New Granada, collected by Geo. Crowther, Esq. 



The toes of this species are short, and together with the tarsi, quite slender. 

 It does not appear to resemble any of the described species that I have exa- 

 mined. 



Description of New Species of NORTH AMERICAN FEDIFALFI. 

 BY DR. H. C. WOOD, JR. 



SCOKPUTS ALLENII. 



S. saturate brunneo-castaneus, laevis, venuste politus; cephalothorace antico 

 distincte emarginato ; palpi modicis ; manibus magnis, subquadrangulatis, 

 latis, vix creuatis, sparse punctatis ; digitis robustis, modice brevibus, fere 

 rude punctatis, curvatis ; oculis lateralibus fere sequalibus ; cauda breve, valde 

 crenulata ; spiculo brevissimo, subuncinato, sine spinulo basali ; pectinis 

 dentibus fere 7. 



The dorsum is beautifully polished, and not at all tuberculate. The palpi 

 are of medium size. The second joint has all of its borders, except the postero- 

 inferior, crenulate. The third has only its supero-anterior crenate. Its anterior 

 face is complanate ; its posterior convex. The hands are rather thin, some- 

 what cordate, subquadrangular, and faintly marked with divisions between 

 eight facets. The anterior border is thin and convex. The fingers are very 

 robust, almost rudely punctate, rather short, and ornamented with a few long 

 hairs. Their opposing margins are minutely denticulate. The tail is short ; in 

 the female not so long as the body. The first joint is broader than long. It has 

 both the superior and the supero-lateral crests crenulate. The third and fourth 

 have also the infero-lateral distinctly crenate. The inferior crests are crenulate 

 on the fourth. The penultimate joint is elongate ; its lower surface is tuber- 

 culate ; its single median inferior and infero-lateral crests strongly dentate. 

 The terminal joint is elongate ; its superior surface is complanate and triangu- 

 lar ; its inferior convex, and marked with a dark median stripe. The sternal 

 plate is pentangular. It affords me great pleasure to dedicate this species to 

 my friend and co-laborer, Dr. H. Allen, U. S. A. 



Length of body, tf 6 lines, 9 9 li nes : of tail, tf 8 lines, $ 8 lines. 

 Hab. Lower California. Smithsonian Museum. J. Xantus de Vesey. 



BUTHUS EXILICAUDA. 



B. dilute aurantiaco-brunneus, interdum obscure maculatus ; dorso tuber- 

 culis parvis asperato ; cephalothorace antico late sed baud profunde emargi- 

 1863.] 



