872 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvi. 



25 111111.: iiii(l(ll(^ femora, 22 mm.; liind feiiiorti, 25 mm.; width at the 

 middle of tlie mesothorax. 1.25 mm. 



One male from Brazos County, Texas, collected in September ])y 

 Mr. Nathan Banks, in whose honor the species is named. Also a 

 male from Buna, Jasper County, Texas, on November 15, l!>02. by 

 Dr. A. 1). Hopkins. The latter specimen was taken on pine. 



Ti/jje.—No. 6616, U.S.N.M. 



This insect may prove to be the male of Smnt/le sfi'!<j(if<( Scudder, 

 but more material is needed before it can be proven. The very 

 slender form, however, scmmiis to militate ao-ainst this. 



BACUNCULUS Burmeister. 

 Bacunculiis Burmeister, Handl). Knt., II, 1838, yi. 566. 



Burmeister estalilished Bacunculu.s as a subgenus of Bacteria. As , 

 represented in the United States, the genus is defined as follows: 



Ver}" closely allied to Diaplieromera. Head smooth in both sexes, 

 subcvlindrical, anteriorly swollen, elongate, more than twice as long 

 as l)road, and horizontally attached to the thorax, x^ntennaj much 

 more than twice as long as the anterior femora. Prothorax about 

 one-sixth as long as the mesothorax; mesothorax slightly longer 

 than metathorax. Legs of male unarmed, slender, filiform; middle 

 femora of male not at all swollen as they are in T)iapherome7'a; legs 

 of female usually unarmed, but the middle and posterior femora are 

 sometimes armed below on the median line next the apex with a dis- 

 tinct, though usually minute, spine. Body of male more slender than 

 in Diapheromei'a and the cerci of similar shape and relative proportion 

 as in that genus. 



The unswollen middle femora of the males make it easy to distin- 

 guish this genus from Dlapheromera, but from female specimens alone 

 it is more difficult. The more elongate and anteriorh" swollen head 

 together with the more generally unarmed legs will usualh^ serve, 

 however, to distinguish the females with considerable certainty. 



In the United States we have a single species. 



BACUNCULUS TENUESCENS Scudder. 



I'late J. VI, lig8. 1, 2. 



Bacunculiis tenuescenH i^cvanniK, Cat. Orth. V. S., app., 1899, p. 95. 



This .species is figured on Plate I, figs. 1 and 2 of the above work, and 

 described in the foHowing words: 



Body exceedingly slender, flavous beneath, brown (male) or green (female) above, 

 becoming infuscated on the lower portion of the Hides, forming a postocular .stripe. 

 Head greatly elongated, much longer than the pronotum; antenna^ much shorter 

 than the l>ody. Entire body quite smooth with a very delicatf mesial carination. 

 Seventh and ninth abdominal segments of male subequal in length, slightly longer 

 than the eighth and about half as long as the sixth, the seventh segment .scarcely 



