442 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



lateral angle not produced; membrane longer than basal width, reach- 

 ing or slightly surpassing apex of abdomen. 



Propleuron: Alutaceous, with minute punctures on anterior con- 

 vexity and several coarser ones in depression; prosternal carinae less 

 than half as high as labial II, more or less abruptly terminated 

 posteriorly. 



Mesopleuron: Evaporatorium attaining posterolateral angle but 

 not lateral margin of segment; lateral area with numerous oblique 

 rugulae. 



Metapleuron: Terminal lobe of peritreme a large, irregular semi- 

 circle reaching almost to straight lateral margin of evaporatorium; 

 lateral area shining, with few rugae paralleling evaporatorium. 



Legs: Anterior tibia with five or six stout spines dorsally. 



Sternites: Shining and minutely punctate medially, laterally with 

 distinct punctures and longitudinal rugae. 



Terminalia: Genital capsule finely alutaceous, more closely punc- 

 tate laterally; gonostylus as illustrated (fig. 212). 



Length of body: 3.42(3.30-3.50). 



Female: Smiilar to male. 



Head: Length-width ratio, 0.56(0.51-0.60) :0.84(0.83-0.S6); inter- 

 ocular width 0.52(0.52-0.53). Antennal segments: I, 0.15(0.14-0.16) ; 



II, 0.17(0.16-0.20); III, 0.18(0.16-0.20); IV, 0.24(0.23-0.26); V, 0.31 

 (0.30-0.33). Labial segments: I, 0.24(0.23-0.27); II, 0.39(0.36-0.43); 



III, 0.28(0.26-0.32); IV, 0.23(0.23-0.26). 



Pronotum: Length-width ratio, 0.95(0.90-1.00): 1.82(1.74-1.92). 

 Scutellum: Length-width ratio, 1.34(1.26-1.41) : 1.14(1.12-1.16). 

 Length of body: 3.45(3.31-3.59). 



Type data.— The type specimen (USNM) was reported by Uhler 

 as having come from Pennsylvania. 

 Specimens studied: 



United States: Alabama: Anniston; July. Arkansas: Pike Co., Washington 

 Co.; May, September. Florida: Pensacola; October. Georgia: Atlanta, Savan- 

 nah; March, May, July. Illinois: Charleston; September. Kansas: Douglas 

 Co., Lyons Co., Manhattan; May, June. Louisiana: Bossier Parish, Baton 

 Rouge, Logansport; April, May. Maryland: "Md.," Hagerstown; March, June, 

 November. Mississippi: Gulfport, Hamilton; April, July, December. Mis- 

 souri: Carthage, Lincoln, Phelps; May, June. Nebraska: Lincoln; May. North 

 Carolina: Moore Co., Southern Pines; July. Oklahoma: Calera Grove; December. 

 Tennessee: Knoxville; May. Virginia: Falls Church, Leesburg; April. 



Discussion. — When Signoret (1883) transferred Uhler's Cydnus 

 picinus and St^l's (1853, p. 215) Aethus picinus to Geotomus, Stal's 

 use of the name had priority and Signoret was obliged to rename 

 Uhler's species. He called it "perisylvanicus," using but one "n" 

 originally, according to usage in French at that time. 



