﻿136 PROCEEDINGS OF THE NATIONAL MUSEUM vol. lOO 



Nev., June, July 5, July 21, and July 27, 1909 (Ithaca and Townes). 

 cf , Mesilla Park, N. Mex,, May 7, T. D. A. Cockerell (Washington). 

 Known from California, Nevada, and New Mexico. 



6. BHYDINOFOENUS TARSATORIUS (Say), new combination 



Figure 15, j 



Occipital carina sharply refiexed; tegula Jerruginous; propleurum 

 about 1 .05 as long as width oj mesoscutum; hind corner of pronotum 

 often ferruginous. 



Forewing about 6.0 mm. long; top of head with fine close punctures 

 and sometimes a suggestion of wrinkling; temple weakly convex; 

 head about 0.43 as wide at the occipital carina as at the eyes; occipital 

 carina separated from the head by a sharp groove, sharply refiexed, 

 about 0.12 as wide as the flagellum, unsculptured; propleurum about 

 1.05 as long as the width of the mesoscutum, with close fine punctures 

 and more or less transversely or irregularly rugulose; lateral lobe of 

 mesoscutum polished, with numerous fine punctures and interspersed 

 coarse deep punctures that are separated by about their diameter; 

 ovipositor sheath about 2.1 as long as the forewing. 



There are two subspecies, separable on color as indicated in the key 

 and in the descriptions below. 



6a. RHYDINOFOENUS TARSATORIUS TARSATORIUS (Smy) 



Foenus tarsatorius Say, in Keating, Narrative of an expedition to the source of 

 St. Peters River, vol. 2, p. 321, 1824; LeConte ed., vol. 1, p. 215. Type: ? , 

 Pennsylvania (destroyed) , 



Gasteriiption intricaium Kxeffer, Arkiv ZooL, vol. 1, p. 556, 1904, Type: 9, 

 New Jersey (Stockholm). 



Blackish. Mandible ferruginous-brown; under side of scape and 

 flagellum except basally stained with ferruginous-brown; hind corner 

 of pronotum, including the part over the spiracle, brownish ferruginous, 

 or in males more narrowly ferruginous and often entirely black; fore 

 and middle legs beyond their coxae brown to ferruginous, their tibiae 

 with an external white stripe from base to apex or the stripe interrupted 

 medially; fore and middle tarsi partly white; hind tibia with a sub- 

 basal whitish mark; hind tarsus of female rather extensively marked 

 with white, usually with most of the first and second segments white; 

 hind basitarsus of male usually marked with whitish; abdomen with 

 about the apical 0.3 of second tergite, apical 0.2 of third tergite, and 

 apical 0.12 of fourth tergite ferruginous; apical 0.15 ± of ovipositor 

 sheath white. A female from McClellanville, S. C, has the head, 

 thorax, and coxae entirely ferruginous and the abdomen more ex- 

 tensively ferruginous than described. It may represent a Lower 

 Austral race. 



This subspecies is readily distinguished from all other Rhydinofoenus 

 in the Transition and Upper Austral zones of the East by the 



