NORTH AMERICAN HYMENOPTERA. 295 



five short, stout s,ines on its ..uter ed,e, of tl>ese one i-P-^Yv'than tiat'be- 

 between the apical and the one before it is conspicuously greater than that be 

 tZlZl other two. Win,s s.noky. iridescent : naarginal cell subtruncate, more 

 dusky thin the rest of the wing; two subn.arginals only, the normal ..con,/ sub- 

 m rjnal being wanting instead of the third; second f-^^^^''^^^ 

 truncate, forming by its junction with the marginal a «l^-t-temmed Y th arms 

 of which are about equal. Abdomen punctate, each segn.ent, except the last, with 

 a snveiT band along its inferior margin above and below; first two segments 

 rufous next three rufous with dorsum blackish, last mostly black. 



ffa6.-Las Cruces, New Mexico, July 18, 1898, on Solamm 



9 



elceagnifolium. 4.1 + v 



Mr Fox, who first recognized this species as new, observes that it 

 i^ near hellm Cr., but ditTers in its finer punctuation of abdomen, 

 and by hxcking the yellowish markings on thorax and abdomen It 

 may be added that its peculiar venation distinguishes it at once trom 

 any known North American species. 



[NOTE. -It is doubtful in my mind whether the absence of the second subimu-- 

 gii al cell is more than an anomalous character. Nysson Ueolor, of which also bu 

 a ng I specimen is known, possesses but two submarginals, but m that species 

 s thl thiKl, not the second, cell that is wanting. A 1-ger series is ne.es yt 

 demonstrate the constancy and value of these supposed, at lea t at the pie.en 

 thiTe charactei-s. .V. solani is remarkable for its very strongly serrated h nd 

 tlbi^, a chalter existing in N. te„s and fascipes, and which is not present in 

 the species more closely allied to solani.—'^. J. F.] 



-^ Prosopis SHbtilis Fox in litt. n. sp.- ? about 6 mm. long black, with 

 J^::Zls on face, prothorax and legs. Head not very bi-oad ; thorax neai- y 

 Lice as long as high, metathorax subtruncate, but with rounded outline . Head 

 and thorax Lther dull, abdomen shiny ; punctuation of vertex and doi.ulum fiii^ 

 IseanTuniform, giving a somewhat granular appearance -^^J --J^^ 

 power: metathorax more rugulo.se, but not conspicuously so, its ^^^f; ° ^d 

 very finely transversely striate; punctuation of abdomen -""^^: f ^";^;^;^. 

 inconspicuous; sides of face, to a short distance above the insertion of the an 

 enlprimro e yellow; this yellow commences narrowly at lower margin of . 

 ev^^id following the edge of the clypeus gtadually widens, reaching its greate. 

 widtra short distance below the antenn.. aftei- which it ^^^^l^^^ 

 acrain to the eye-margin, just touching the outer edge of the sockets of the an 

 t;n L at its upper t;rmination it does not actually reach the eye-margin being 

 epiated therefrom by a very narrow and short descending tongue of black , 

 hf etof tie face is black, except the lower margin of clypeus, which is broadly 

 -ufo^^^ with centrally an obscure yellowish spot, whence proceeds upwai a 

 uffused rufous tongu ; the rufous of the clypeus therefore resembling in outline 

 a tt o If, or peiLp; rather an inverted T ; ends of mandibles shining rutous 

 flaleU^mm^re or less testaceous below, blackish above; hind margin of pi^tlK- 

 ixl'owly yellow, the yellow interrupted in the middle; tubercles yellow 

 e.uLwith a yellow spot on anterior, and a subrufous spot - P««*--\'^f " 

 ;:;:ll black with the extreme tips reddish y^^^ ^ ^'^^^J^^Z^Z 

 front, black behind; middle tibi.B with the base rather broadly, and the apex 



AUGUST. 189o. 

 TRANS. AM. ENT. SOC. XXII. 



