1917.] NATURAL SCIENCES OF PHILADELPHIA. - 239 



LABIINiE. 



Labia barberi*' new species. PI. XVI, fig. 4. 



1907. Labia hilincata Caudell, (not of Scudder, 1869), Proc. U. S. Nat. 



Mus., XXXIII, p. 173. [Cacao, Trece Agua.s, Alta Vera Paz, Guatemala.] 

 1910. Labia bilineata Burr, (not of Scudder, 1869), Proc. U. S. Nat. Mus., 



XXXVIII, p. 453. (Same specimen.) 



The marking of pronotum and organs of flight are similar to those 

 found in Microvostox hilineatus (Scudder)/- the male of which species 

 was unknown at the time this specimen was recorded by Caudell 

 and Burr. 



The present species is an aberrant member of the Championi 

 Group. It is distinctive in the remarkably large eyes and features 

 of the male pygidium and forceps. 



Type: (f ; Cacao, Trece Aguas, Alta Vera Paz, Guatemala. April 

 20, 1906. (Barber and Schwarz.) [U. S. National :Museum."i 



Size" very small, form slender. Head smooth, shining, convex, 

 but with occiput weakly bilobate, due to presence of a distinct meclio- 

 longitudinal suture caudad. Eyes large, fully twice as long as 

 cheeks. ^^ Antennse with first joint large, nearly as long as combined 

 length of second and third joints; second joint minute; third elongate j 

 expanding slightly only distad; fourth three-quarters as long as third; 

 fifth slightly longer than fourth; succeeding joints increasing slightly 

 in length distad, ovate, the longest slightly more than twice as long 

 as broad. Pronotum with form as in L. micans Hebard, smooth, 

 with a single bristle at each cephalic angle, length appreciably less 

 than greatest (caudal) width; caudal margin feebly convex; median 

 portion of surface weakly convex, triangular, with apex truncate at 

 caudal margin of pronotum, remaining narrow lateral portions 

 deplanate, feebly ascendent toward lateral margins. Tegmina and 

 wings fully developed; smooth, shining, hairless. Abdomen polished, 

 moderately well supplied with hairs laterad; disto-lateral portions 

 of segments not produced, except of eighth, which is broadly rounded. 

 Ultimate dorsal abdominal segment smooth; caudal margin trans- 

 verse between forceps, feebly concave laterad. Pygidium twice as 

 long as mesal width, weakly declivent, convex, with disto-lateral 

 productions deplanate; lateral margins of proximal portion parallel, 

 but each showing a brief convexity ; distal portion bifurcate, forming 

 two large, acute-angulate, slightly divergent projections, whose 



11 We take pleasure in naming this interesting species for its collector, our 

 friend Mr. H. S. Barber, an enthusiastic collector and entomological student. 



12 See Hebard, Trans. Am. Ent. Soc, XLIII, (1917). 



1' The large eyes are remarkable in the genus Labia. A closer approach to the 

 condition here found, is met with in species of the genus Microvostox. 



