202 



PSYCHE 



[Oct.— Dec. 



agricultural college, and in Mr. Bridwell's collection. Besides these I have exam- 

 ined eight other specimens from Mr. Bridwell's collection and have labeled them 

 paratypes. 



1 



Fig. I. Hind wing of Spliex flavipes Sm. Fig. 2. Last dorsal abdominal plate of male S. flavipes. Fig. 3. 

 Hind wing of 5". hridwelli. Fig. 4. Last ventral abdominal plate of male 5. niidns. Fig. 5. Hind wing of 

 S. njidus. Fig. 6. Last dorsal abominal plate of male .S". nudus. 



This species much resembles Sphex flavipes Sm. but the outline of the last dor- 

 sal abdominal plate (see Figures 2 & 6) provides a ready means of separation. 

 Though well clothed with hair the general effect to the eye is that of absence of 

 such clothing. I am of the opinion that the next species may prove to be the 

 other sex of this, being represented by females only, and a number having been 

 taken at the same time and place. Until this relation can be proved however, 

 they must remain separate. 



Sphex bridwelli, sp. nov. 



Head. Black, with scattered dark and jellowish white hairs. Clypeus coarsely punc- 

 tured, with scattered long black hairs ; emarginate anteriorly, with a broad, shallow notch 



