﻿— 215 — 



and Dr. LeConte's two lines in the synopsis referred to, reproduced 

 by Mr. Leng, are all that can be depended on for its differentiation. 

 The female has the last ventral segment convex, elongated, not 

 greatly narrowed to apex, depressed posteriorly in the middle, and 

 deeply, broadly, nearly rectangularly emarginate ; the sides not 

 being depressed project backwards like blunt horns, their apices 

 with stiff hairs. 



In regard to L. hcsmatites and exigua, Mr. Leng has overlooked 

 (it is to be regretted) Dr. Horn's latest determination from an ex- 

 amination of the types in the British Museum, according to which 

 the species should be thus tabulated. 



L. exigiia Newm., saucia Lee. 



L. nana Newm., prothorax and elytra concolorous. 

 var. hcematites Newm., prothorax dull red. 



See Trans. Am. Ent. Soc. xv, 301; Can. Ent. xxi, 32, 108. 



In this connection it may not be amiss to state that there are 

 two races of L. vibex Newm. — one with the thorax entirely black, 

 and one with it entirely yellow rufous — found separately in different 

 localities. John Hamilton. 



Dr. Hamilton is quite right, and I am sorry, because it is an 

 important error. The subjoined note may be added as a postscript 

 to what he says, and will save the reader hunting up references. 



"L. exigaa Newn. — Antennae piceous, the basal joint yellow; anterior 

 femora entirely, the middle and posterior yellow at base. Terminal ventral 

 segment of female with a slight tuberosity near tlie apical margin. This spe- 

 cies may have the thorax entirely piceous, usually it has the entire margin 

 yellow. The disc is also more densely punctured than in nana, while the 

 form of the thorax is shorter and broader. L. saucia Lee. is synonymous." 



" L. nana Newn. — Antennie always piceous. Anterior femora and base 

 of middle yellowish. Terminal ventral segment of female simple." 



' ' This species varies in color. The upper surface is often entirely 

 piceous. By far the larger number I have seen have a reddish tho- 

 rax, constituting the variety hcematites Newn. One specimen before 

 me is piceous, with the head reddish yellow" (Horn, Trans. Am. 

 Ent. Soc. XV, p. 301). 



L. aspera Lee. — Mr. O. S. Westcott, of Chicago, has called 

 our attention to a discrepancy in the synoptic table, in reference to 

 this species, to correct which the words " except aspera' should be 

 add^d to Section E on p. 186. It has been taken abundantly in 

 British Columbia, and bears out the description made from a few 

 specimens, being very black, and the elytra rough at base. 



C. W. Leng. 



