72 ASTACIDiE. 



antice vallata, dense punctata, marginibus ad acuminis apicem elevatis, 

 vix punctato-lineatis, antice convergentibus, apice leviter sinuatis, acu- 

 mine brevi, triangulari, acuto, dentibus lateralibus nullis ; cretis basali- 

 bus subdivergentibus, vix elevatis, extus sulcatis, antice muticis. An- 

 tennis gracilibus, thorace paulo longioribus, articulo basali dente externo 

 parvo acuto, articulo secundo dente perparvo ; antennis internis dente 

 medio articuli basalis infero ; lamina rostro vix longiori, lata, apice sub- 

 truncata, margine externo inflato, brevi-spinoso. Epistomate lato, apice 

 exciso (vel truncato, spina media perparva), lateribus obliquis, angulis 

 rotundatis. Pedibus maxillaribus externis intus et subtus villosis. Tho- 

 race subcylindrico, compresso, supra fortiter punctato, lateribus laeviori- 

 bus ; linea profunda, sinuata, lateribus divisa, spina utrinque parva, 

 aliaque antica ad antennas infera minori ; areola plana, punctata, angusta, 

 postice valde dilatata. Postabdomine thoracis latitudine, laevi, segmen- 

 tis antepenultimis angulo externo rotundato ; lamina intermedia parte 

 apicali vix breviori, rotundata, medio subexcisa ; parte basali utrinque 

 bispina. Pedibus anticis modicis, brevioribus ; chela modice lata, de- 

 pressa, leviter punctata, subtus laevi, extus marginata ; margine interno 

 brevi, subrecto, tuberculato-serrato ; digitis longioribus, rectis, apice 

 corneis, incurvis, supra costatis et punctato-lineatis ; digiti mobilis mar- 

 gine externo serrato, interno basi exciso, tuberculato ; digito externo 

 tuberculo medio et basali minoribus, basi subtus valde barbata. Carpo 

 lato, extus valde oblique-truncato, spina interna media majori, aliisque 

 brevioribus ; subtus antice et intus multispinoso, duabus anticis majori- 

 bus. Brachio brevi, laevi, margine supero parce tuberculoso, spinis dua- 

 bus parvis anteapicalibus minoribus; subtus spinis obtusis biseriatis, 

 anticis nonnullis majoribus. Pedibus secundis intus ante apicem valde 

 barbatis. Pedibus tertiis articulo tertio unguiculato ; pedibus quintis 

 capitulo basali annulari. Pedibus abdominalibus modicis, contortis, 

 longe bifidis, margine postico medio subito latiori, parte interna cylin- 

 drica, apice acuta, depressa, incurva, subdilatata; parte externa paulo 

 longiori, acuta, incurva. 



Femina difFert chelis minoribus, pedibus secundis minus barbatis ; 

 ventre inter pedes quartos laevi, annulo obovali, fissura denticulata, 

 apertura magna transversa ; ventre inter pedes tertios tuberculo apicali 

 planiori. 



Long. corp. 2.6 ; long, antenn. 1.5 ; ped. antic. 2. 



Vidi marem (ex Alabama) paulo majorem, chelis medio magis dila- 

 tatis, digito externo intus curvo. 



Patria : Lawn Ridge and Belleville, Illinois ; Huntsville, Alabama. 



I have not seen the second form of the male. 



A female from Beaufort, N. C, is a little smaller, the antennal lamina 

 not so broad at the tip, the areola a little narrower, the hands are very 

 Small, the moving finger has its inner margin straight, without basal 



