738 PROCEEDINGS OF THE ACADEMY OF [NoV., 



finely sculptured to polished on basal half, the apical half hairy, a 

 small puncture seems to be at the base of each hair. On the basal 

 two-thirds of the third segment in the middle there is a curious 

 area like a transverse half of an ellipse, with the rounded portion 

 pointed toward the apex of the segment, this has a subtle surface, 

 neither shining nor exactly dull, with an opalescent cast. A fur- 

 row of gi-ayish felt-like pubescence close to the margin of the second 

 dorsal segment. There is no furrow with felt -like pubescence 

 on the second ventral segment. The wings have the third sub- 

 marginal cell very faintly indicated, except at the lower corner, 

 where it is" altogether erased, not a trace of a second recurrent 

 nervure. The insect is almost uniformly covered with a moder- 

 ately abundant fine, long, pale pubescence, that on the abdomen 

 sparsest, 'pubescence of dorsulum stronger, shorter, of a golden tint. 



Rather brownish testaceous ; space between ocelli, tips of the 

 mandibles, aud^j^arts of the femora almost black. Flagellum 

 brownish. Tibiae and tarsi very pale brownish. Stigma very dark 

 brown, nervures smoky testaceous. 



Type, Coll. Acad. Nat. Sci. Philadelphia. 



Type locality. La Jolla, ^Cal. 



One c?', August. 



ODONTOPHOTOPSIS n. g. 



Erected for the reception of those species having the anterior 

 marginof the mesosternum armed with two processes. 

 Type, Odontophotopsis exogyrus n. sp. 



Odontophotopsis exogyrus n- sp. 



Process of mesosternum in the shape of a broad projection 

 pointed straight down, having the appearance of being bidentate, 

 one tooth sharper than the other. 



Length, c?, 12.5 mm. Clypeus concave, polished. The entire 

 head almost uniformly covered with well-separated medium punc- 

 tures, an indistinct furrow extends from the anterior ocellus to be- 

 tween the insertion of antennse. Posterior ocelli more than twice as 

 far apart as they are distant from the anterior one, the distance 

 between the posterior ocelli less than that between tliem and nearest 

 eye-margin. Lower margin of eyes almost contiguous with insertion 



mandibles. Mandibles strong, decidedly curved, with a strong 

 uperior and inferior margin, deeply emarginate on the lower mar- 



