The Pselaphid^ of North America. 267 



ii Median fovea large, pubescent; abdominal carinse including 

 one-third of the segmental width. ' antenna: very long, the 

 club slender. Length, 2.0-2.2 mm. Penna., New York, 111. 



{Mxiio-uiiica } I^each) t'ah'cfd. 

 1 2 Median fo\'ea small, nude. 



Basal abdominal fove^ including one-fourth of the segmental 

 width, antennal club loose, the penultimate joints not elongate 

 nor compressed. Anterior trochanters blunt. Length, i.S- 

 2.0 mm. New York to Missouri. - - coujimcta. 



Basal abdominal carina; including one-third of the segmental 

 width, antennal club three-jointed, dilated, compressed in $,, 

 densely covered with black pubescence. Anterior trochan- 

 ters with a sharp-pointed tubercle. Length, 1.7-1.S mm. 

 Penna., 111. ..-.--. hrcndcUi 

 B. Prothorax with three equal, small, pubescent foveiv, connecting groove 

 wanting. Last three joints of the ,* antenna; contorted in various 

 ways. («/5«, Casey ) . 



1 1 Prothorax as long as wide, convex, abdominal carinre wanting. 



The pubescent basal abdominal lines equal in length to one-third 

 of the segmental width. Length, 2.0 mm. Virginia. 



hiiiiger. 

 Basal pubescent patch not wider than the distance between the 

 sutural lines. Length, i.S mm. 111. - - ferpunctata. 

 i^ Prothorax wider than long, less convex. 



Abdominal carinte including two-fifths of the segmental width. 

 Length, 2.2 mm. ^''irginia. ... cavkornis. 



Abdominal carina? including one-third of the segmental width. 

 Length, i.S mm. Arizona. . . . . clegans. 



C Prothorax with three large, equal, pubescent fove?e, sexual marks on 



the dorsal segments. {Bryaxis^ Sauley). 

 ii Elytra impunctate, lateral margin and declivous sides nearly parallel, not 

 divergent posteriorly. 



Prothorax widest just before the middle, not very convex longitu- 

 dinally, 5 with three of the dorsal segments sculptured, the 

 fourth produced over the fifth. Length, 2.0 mm. East of 

 Alleghanies. ...... ahdominalis. 



Prothorax widest just behind the middle, longitudinally convex, r? 

 with two segments sculptured, the third produced over the 

 fourth. Length, i.S mm. Florida, Georgia, Tennessee. 



foridana. 



1 2 Elytra with the sides divergent. 



2^ Occipital fovejE open toward the eyes or very near them. 

 31 Impunctate, $, with two dorsal segments sculptured. Length, 1.9 mm. 

 Tennessee, Virginia. ...--- intermedia. 



3* Punctulate. 



A faint linear impression from the occipital fovese to the corres- 

 ponding frontal tubercle. $ with two segments sculptured, 



