1913.] NATURAL SCIENCES OF PHILADELPHIA. 41 



but in minuscula the sculpture is deeper, giving a finely pitted effect; 

 P. minuscula also lacks the green color, and has the b.n. considerably 

 more remote from the t.m. 



Prosopis scintilliformis n. sp. 



9 . Length about 4^ mm. ; black, much less robust than P. 

 chlorosoma, the abdomen especially much narrower; head round, 

 the face broad; mandibles pale yellowish, but labrum dark; face- 

 marks confined to a rather narrow yellow band along each inner 

 orbit, reaching a little above level of antennae; flagellum clear 

 ferruginous beneath; tubercles, and an inconspicuous interrupted 

 line on upper border of prothorax, yellow; legs black, with the 

 knees, anterior tibiae in front, base of middle tibiae and nearly half 

 of hind tibiae, as well as all the basitarsi, yellow; wings practically 

 as in P. chlorosoma, except that first r.n. enters extreme apical corner 

 of first s.m.; thorax dullish, the microscopical sculpture peculiar, 

 the mesothorax and scutellum having a fine but deeply cut tessel- 

 lation and scattered punctures; area of metathorax microscopically 

 coarsely cancellate. 



Hahitat. — Croydon, Australia, 1 9 , mounted on a card with three 

 P. cMorosoma (S. W. Fulton; Nat. Mus. Vict. 192). In my table 

 this runs near to P. amicula Sm., a much larger and otherwise 

 different species. It is rather to be compared with the minute 

 P. scintilla Ckll., from which it is readily known by the light tubercles, 

 etc. I suspect that it may be the female of P. minuscula, but with- 

 out better evidence of this it seems best to regard it as distinct. 



Prosopis xanthosphsera n. sp. 



9. Length almost 10 mm.; robust, black, the abdomen faintly 

 greenish, especially toward the apex; markings on head and thorax 

 brilliant chrome-yellow, as follows: a large broad patch on each side 

 of face, shaped something like a turtle's head in profile, obliquely 

 truncate above, very obtusely pointed below; tubercles broadly 

 (but no patch behind); a large round patch on scutellum and post- 

 scutellum, crossed by a black (sutural) line. Mandibles broad, 

 tridendate at apex; ch^peus flattened and minutely roughened in 

 middle, distinctly but not densely punctured; antennae entirely 

 black; front and vertex with coarse black hair; mesothorax dullish, 

 strongly and rather closely punctured; area of metathorax with 

 about the basal third very coarsely corrugated, in complete contrast 

 with the rest, which is without evident sculpture; tegulae black, 

 punctured anteriorly; wings hyaline, very faintly dusky; b.n. 



