1916.] NATURAL SCIENCES OF PHILADELPHIA. 273 



species for which we use the name lapidicola; the specimens 

 are much reduced in size, but inseparable from individuals from more 

 southern localities. The description of pallidipes, in its analysis of 

 the differential characters, is a decided aid to an understanding of 

 the species. 



The specimens recorded by Sherman and Brimley, 125 from Andrews 

 and Grandfather Mountain, North Carolina, as C. tenebrarum, belong 

 to this species, as an examination of the material shows. From 

 Andrews there is a small adult female, from Grandfather Mountain a 

 nearly adult quite small male minus the caudal limbs. The Southern 

 Pines record was based on a minute immature specimen which we 

 would not care to determine. At this writing we cannot make any 

 statement on the status of Scudder's tenebrarum. The Sunburst 

 pair recorded above is not quite mature, but clearly represents the 

 present species. 



The species was described from Virginia and South Carolina, but 

 previously we have had no exact record from the southeastern States. 



Ceuthophilus latens Scudder. 



Alexandria County, Virginia, VI, 1910 and 1914, (\Y. T. Davis; trapped in 

 molasses jar), 36 d\ 24 9 , 2 juv. 9 , [Davis Cln.]. 



We are using for comparison certain specimens from Ithaca, New 

 York, in the collection of Cornell University, and a female from Vigo 

 ( lounty, Indiana, in the Hebard Collection, which were determined as 

 this species by Scudder. The series here recorded is of considerable 

 interest, as it shows to what extent individual variation is present 

 in this striking and beautiful species. 



In size the usual amount of variation is present, the extremes 



(in millimeters) being: 



c? <? 9 9 



Length of pronotum 4.8 5.5 5 5.9 



Length of cephalic femur 5.8 6.8 5.4 6 



Length of caudal femur 12.9 14.7 12.1 14.9 



Length of caudal tibia 13.4 15.9 12.9 15.3 



Length of ovipositor 8.1 9.2 



The color pattern of this species is probably more uniformly 

 constant than in any other species of the genus of which we have 

 seen a considerable series. The broad pale dorsal line and the 

 broad bordering dark lines are always indicated on the thoracic 

 segments and their variation in width is relatively small, while the 

 abdominal markings and the clouding of the caudal femora are 

 characteristic of this species and lapidicola, and vary only in depth. 



125 E?it. News, XXII, p. 311, (1911). 



