TIPHIA, 187 



differs in being a more slender insect, in having the second sub- 

 marginal cell mnch narrowed towards the discoidal cells, and in 

 having the first segment of the abdomen as long as broad : in 

 T. salutatrix the segment is short and transverse. 



-O a 



10. Tiphia oblonga. 



Female. Length 5^1 ines. — Black, with fusco-hyaline wings ; the 

 metathorax oblong, more so than usual. Head closely punctured 

 and gradually narrowed behind the eyes. The pro- and meso- 

 thorax punctured the same as the head ; the scutellum sparsely 

 punctured ; the metathorax impunctate, with three longitudinal 

 parallel carinas, the middle one short, and not distinctly formed. 

 The two basal segments of the abdomen impunctate and shining, 

 the following segments finely so ; the terminal segment with pale 

 pubescence, its apical margin rufo-testaceous. 



Hab. Columbia. 



11. Tiphia clypeata. 



Male. Length 4 lines. — Black, with the clypeus and mandibles 

 white. Head and thorax closely punctured ; the metathorax longi- 

 tudinally rugose ; the usual three carinse not distinctly observable, 

 but are parallel and rather wide apart ; wings hyaline, the nervures 

 black. Abdomen finely punctured, the segments with a fringe of 

 pale fulvous pubescence above and beneath. 



Hab. Mexico, Oajaca. 



12. Tiphia subspinosa, 



Male. Length 5 lines. — Black, punctured ; the wings hyaline, iri- 

 descent, and faintly clouded at their apex. The head closely 

 punctured ; the antennas as long as the thorax ; the face and 

 cheeks with thin white pubescence. The thorax closely punctured ; 

 the metathorax rugose and with three longitudinal carinas, the 

 lateral ones approximating towards the verge of the truncation ; 

 the prothorax narrowed towards the head ; the lateral angles of 

 the anterior margin subspinose ; the tegulas smooth and shining. 

 Abdomen rather strongly punctured ; the first segment longer than 

 broad, and having a central impressed line. 



Hab. Mexico. 



This differs from the male of T.parallela and T. inornata in having 

 the angles of the prothorax subspinose, and in the strongly punc- 

 tured abdomen, 



