422 rROCEEDiNGS or the academy of [189P. 



much as in Z. fraternus, but with a longer stem aud narrower 

 enlarged portion ; second segment above finely and closely punc- 

 tured, beneath with large separated punctures, smooth at base, the 

 pedicel short and stout; no distinct radial side to the second sub- 

 marginal cell, the first aud second transverso-cubital veins almost 

 coalescing above. Length 16 mm. 



Santarem. One specimen. 

 Zethus proximus «■ sp. 



Black; dot behind each antenna, line on pronotum anteriorly, 

 dot at base and apex of tegulse, at each side of scutellum and 

 postscutellum, a stripe on four anterior tibi?e, line at apex of petiole 

 emarginate anteriorly and continued a little along sides, and a 

 line on segments 2-4, that on the dorsal segments emarginate 

 anteriorly in the middle, yellow; in c? a line on mandibles, clypeus 

 anteriorly and scape beneath, yellow ; head and thorax with thin 

 hoary pile, that on second segment brownish in certain lights; wings 

 pale subhyaliue, slightly brownish in costal cell. 



?. — Head coarsely rugoso-punctate including cheeks and front; 

 clypeus with large shallow punctures, about or nearly twice as 

 broad as long, its fore margin broadly subtruncate, subdentate lat- 

 erally; a tolerably distinct T-shaped carina between antennse; space 

 between hind ocelli about equal to that between them and eyes; 

 scape slender, but barely as long as pedicel and following three joints 

 united; pronotum cristate, spinose laterally, rugoso-punctate; 

 dorsulum with large separated punctures, sparse medially, Avith an 

 impressed line anteriorly in the middle aud two indistinct ones 

 posteriorly; postscutellum carinated and subdentate laterally, not 

 carinated or tuberculate medially; middle segment concave, the 

 concavity nearly smooth and bounded externally by a carina, 

 between which and the lateral carina the segment is rugose, the 

 rugse not extending on sides, but the lateral carina is margined 

 externally by a I'ow of fovese; stem of petiole shorter than hind 

 coxa and trochanter, stout, the enlarged portion elongate-ovate, 

 scarcely narrowed apical ly, with coarse separated punctures; 

 second segment finely and closely punctured, beneath the punctures 

 large and sparse, the pedicel short and thick; second submarginal 

 cell with a radial side nearly equalling the distance between the 

 first transverso-cubital and first recurrent nervures on the cubital 



