1902.] NATURAL SCIENCES OF PHILADELPHIA. 739 



gin, the emargination exteuding in, one-half of the width, the part 

 of the mandible beyond this narrow, oblique, strongly margined. 

 First joint of flagellum about three-fourths the length of the second. 

 Prothorax rugose. Dorsulum with strong separated punctures, the 

 furrows of about the same degree, none strong, merely impressed 

 lines, starting about one-thii'd the distance from the anterior mar- 

 gin of the dorsulum and extending back to the posterior margin. 

 Scutellum large, coarsely sculptui-ed, postscutellum indistinctly sculp- 

 tured, propleurse rough above, smooth below^, mesopleurse with in- 

 distinct shallow punctures on tlie depressed part, the bulged part 

 reticulated but not margined, on the posterior border smooth and 

 polished. Disk of metathorax with an oblong area bisected by 

 a longitudinal ridge. An almost triangular area to each side 

 of the enclosure, the rest of the metathorax except the lower half 

 of metapleurse reticulated, the meshes on the posterior face largest, 

 the lower half of metapleurje deeply depressed, making a channel 

 which is smooth and shining. A median raised line extends 

 from the deepest part of the impression back almost to the poste- 

 rior coxa?, where it helps to make a narrow channel, which is 

 thus separated from the rugose ai-ea adjoining the coxae. Third 

 submarginal cell entirely obliterated, as is the second recur- 

 rent nervure. Petiole nearly twice as long as broad at apex, con- 

 vex but not strongly so, punctures rather shallow, not sharply 

 defined, rather close together near the margins, more separated 

 above, second segment polished, the punctures distinctly finer than 

 those on the first, a long line with felt-like golden pubescence 

 exteuding along the dorsal segment near the margin ; on the ventral 

 segment this line is shortened almost to a spot. The rest of the 

 segments very finely punctured. 



Covered in greater part with a golden pubescence ; the pubescence 

 of the metathorax, sides of thorax and the first segment pale, 

 silvery. 



Testaceous; flagellum brownish, legs paler than rest of the 

 insect. Stigma deep brown, nervures much paler, the membrane 

 slightly, uniformly clouded. 



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



Type locality. La Jolla, Cal. 



Two dd, taken in August. In the pavatype there is a very 

 faint indication of a third transverse cubitus. 



