148 NORTH AMERICAN 



toward the apical angles which are obtusely rounded ; together broadly 

 triangularly and feebly eniarginate behind ; disk very convex, shining, 

 distinctly wider than long and equal in length to the pronotum ; sculpture 

 rather coarsely and very distinctly irabriuate, fnu'ly reticulate, very minutely 

 and not distinctly punctato-asperate. Abdomen at base narrower than the 

 elytra ; surface more finely and indistinctly sculptured ; apices not punctate, 

 transversely and excessively finely strigose, having along each side a double 

 line of erect very coarse long black bristles which are very prominent. Legs 

 long and slender, dark rufo-testaceous, darker toward the coxae ; middle 

 tibiae with one terminal spine, and also fimbriate at tip with unusually 

 short and equal spinnles which are not as close as those of the preceding 

 species, this tibia also has usually one outer and two inner spines along the 

 sides ; under surface of the body nearly piceous-black. Length (contracted) 

 1.9-2.3 mm. 



Jcnkintown, near Philadclpliia, 2. 



Tlie (k'scription is drawn from the male ; the female lias on the 

 discal surface of the second and tliird abdominal segments a third 

 inner line of black bristles, one on each segment ; none of the bristles 

 are apical, and they are all very large and conspicuous. The female 

 is the smaller. 



This species should probably be placed after basalis in Dr. Horn's 

 table, and may be distinguished from that species by its very small 

 size and the single terminal spine of the middle tibiae. 



In Conurus the anterior tarsi are dilated equally in both sexes, at 

 least in all the species which 1 have examined ; and not as stated by 

 Dr. Horn in the male only. It is probably a very extensive genus in 

 the United States, judging by the above new forms found near Phila- 

 delphia, and the large number described from the tropical regions of 

 our continents. They are exceedingly active and often difficult to 

 capture, disappearing as soon as the bark, under which they usuallv 

 live, is removed from the fallen log, and, unless a cloth is held in 

 readiness below, they are generally lost. 



BOLITOBIUS Steph. 



It. facilis n. sp. — Form moderately robust, depressed. Head black; 

 })n>ii(itum jiale flavo-testaceous, very translucent; elytra very translucent, 

 tlavo- testaceous except a black spot near the apex of each indefinitely 

 shaded, not attaining the apical edges, extending broadly to and along the 

 epii)leurae, and becoming narrower toward the suture which is nearly at- 

 tained, suture very narrowly dark oast aneous ; abdomen unicolorous above 

 and beneath, reddish-brown ; apices of the segments translucent and paler 

 above, nearly black beneath. Head very slightly longer than wide, very 

 liighly polished ; labrum, oral organs and first three joints of the antennae 

 pale flavo-testaceous, remaining joints of the latter piceous-black ; maxillary 



