376 Annals Entomological Society of America [Vol. XI, 



Linotaenia f ulva (Sager) . 

 One specimen taken at Creston, March 9, 1915. 



Arenophilus bipuncticeps (Wood). 

 One specimen from near Creston, La. 



Arenophilus watsingus Chamberlin. 

 One specimen from near Creston taken May 5, 1915. 



Geophilus mardax Meinert. 

 One specimen from near Creston, April 2, 1915. 



Nannocrix gen. nov. 



Frontal suture not present. Prebasal plate developed and exposed. 

 Basal plate trapeziform, narrowed cephalad. 



Labrum free, tripartite. Lateral pieces amied with long spinous 

 processes. 



First maxillag with coxae completely fused at middle and separated 

 by suture from the distal divisions. Palpi biarticulate, the coxte and 

 femora with long membranous lappets at distal external angles. 



Coxag of second maxillae completely fused. No trace of pleuro- 

 sternal sutures. Palpus triarticulate ; "femur without distal process; 

 claw simple. 



Coxostemum of prehensors with strongly developed and complete 

 chitinous lines. Prehensors short, not attaining front margin of head; 

 articles wholly unarmed within. 



Dorsal plates strongly bisulcate. 



Ventral pores on anterior plates in a transverse band in front of 

 caudal margin and in two small anterior areas, one in each anterolateral 

 corner. Anterior areas may disappear in caudal region, where pores of 

 posterior band are also fewer and may be divided into two areas. 



Last ventral plate very wide. Coxopleural pores few, obscure, 

 covered by plate. 



Anal pores absent. 



Anal legs unarmed, the claw being replaced by a minute, trans- 

 parent terminal article. 



Type. — Nafinocrix porethus sp. nov. 



Nannocrix porethus sp. nov. 



Body moderately attenuated cephalad of middle, more strongly so 

 caudad. 



General color yellow, becoming dilute ferruginous in the anterior 

 region and sometimes in the extreme posterior, the head deeper fer- 

 ruginous. Antennae and legs yellow. 



Cephahc plates short, equal in length and breadth. Greatest width 

 near junction of posterior and middle thirds of length. Sides convexly 

 rounded; caudal margin incurved; anterior margin in the form of a 

 very obtuse angle. Sparsely and uniformly hirsute. 



