182 WILLIAM J. FOX. 



beneath ; the % differs priucipally from that of the following species, maculipennis, 

 by the less strongly foveolated episternal suture of mesopleurse and the non. 

 foveolated furrows, that bound the lateral ridges of the posterior face of middle 

 segment outwardly ; spot in marginal cell nnich more distinct than in the female. 

 Length 8 mm. 



Colorado. Confertus agrees better with the description of macii- 

 latiis St. Farg. (non Fab.) than does the preceding species, but is 

 evidently different from the species to which Smith gave the name 

 maculipennis, that author stating that maeulatus St. Farg. " is quite 

 distinct from the macvkdus of Fabricius." The specimens which 

 Smith possessed at the time of renaming )nacu/atus St. Fargeau, ac- 

 cording to vSmith's remarks regarding them, also appear different 

 from St. Fargeau's, so that it seems to me that confeHus probably 

 represents the macnlutns of St. Fargeau and the maculipennw of 

 Packard (not Smith) and that Smith's maculipennis is a different 

 species. It is possible that nitidiventris is Packard's maculipennis, 

 but that author makes no mention of the yellow spots on middle 

 segment which are constant in the specimens of the former species 

 before me. It is a question to be settled by the examination of 

 either the types of St. Fargeau and Smith. 



61. €rabro iiiti<liveiitri»$ Fox. 



('. nitkliventris Fox, Entom. News, iii, 9, 9 • 

 9 . — Clypeus dentate, as in veniralin ; head shining, with distinct, separated 

 punctures, those on the cheeks and occiput finest, the posterior lateral angles not 

 prominent, rounded ; posterior ocelli situated in broad, though not deep, depres- 

 sion? ; furrow running from frontal depression to fore ocellus deep ; pronotum 

 well developed, but not strongly so as in ventralis ; dorsulum with distinct, sepa- 

 rated punctures, somewhat closer than those of the front and vertex, shining; 

 scutellum finely punctured ; episternal suture of mesopleurse distinctly foveo- 

 lated ; foveolated furrows bounding the enclosure of middle segment not so broad 

 as in ventralis, and the longitudinal central channel is transversely ridged, poste- 

 rior face transversely rugose apically, the lateral ridges distinct on posterior half 

 only, and on their outer side is a heavily foveolated furrow, which extends the 

 entire length of the posterior face ; medial and hind tibiae more finely spincd 

 than in the species mentioned above ; abdomen shining, with exception of the 

 first dorsal and the ventral segments, which are impunctate, finely and somewhat 

 sparsely punctured, pygidium with large, spai-se punctures; these are more or less 

 variable, however. Black, including the mandibles and ventral surface of ab- 

 domen ; two spots on clypeus, scape and pedicellum, line on pronotum sometimes 

 interrupted medially, tubercles, episternum mesopleuralis, clot on tegulse, basal 

 half of scutellum, spot on each convexity of the enclosui-e of middle segment, 

 tips of fore and medial femora, tibia; except a spot at apex of medial and hind 

 pairs, tarsi except apical joints, which are brownish, and a transversely elongated 

 macula on each side of dorsal abdominal segments 2 5, yellow ; gi-eater part of 

 tegulffi reddish testaceous; clypeus, inner orbits beneath and cheeks with silvery 



