62 Psyche [April 



THE STANFORD EXPEDITION TO BRAZIL, 1911. 



J. C. Branner, Chief. 



A NEW SAWFLY FROM BRAZIL. ^ 



By S. a. Rohwer. 



Mr. W. M. Mann has referred to me the sawflies and wood- 

 wasps obtained in Brazil by the Stanford Expedition. They are 

 as follows: 



Sericocera gibba {Klug) 



Female: Ceara, Brazil. {Mann.) 



Manaos gen. nov. 



Belongs to the Sterictiphorinse and runs to couplet 31 in Konow's last table, 

 to the genera of this group. The very narrow facial quadrangle will separate 

 Manaos from related genera. 



Slender species. Eyes large, extending almost to the anterior margin of the 

 clypeus, converging to the clypeus; facial quadrangle narrow, much narrower than 

 the length of the eyes; clypeus truncate, or nearly; palpi large; supraclypeal suture 

 present, straight; frontal carina strong; antennse inserted near the middle of face; 

 ocelli in a curved line, the lateral ones tangent to the supraorbital line; posterior 

 orbits very narrow; antennae bifurcate in male; female unknown; tarsal claws simple; 

 hind basitarsus longer than the following joints; fore wings: radial cell not appen- 

 diculate; four cubital cells, the basal three small, the second and third each receiv- 

 ing a recurrent vein near the base; basal vein remote from the origin of the cubitus; 

 anal cell petiolate; transverse median received before the middle of the cell; hind 

 wings: radial cell open; two discal cells; anal cell about the same length as the 

 petiole. 



Type. — Manaos nigrinotatus sp. nov. 



Manaos nigrinotatus, sp. nov. 



Male, Length 5 mm. Labrum narrowly arcuately emarginate; supraclypeal 

 area convex; antennal furrows present, broad, shallow, nearly complete; ocellar 

 basin oval in outline, more sharply defined near ocellus; postocellar furrow present, 

 angulate from anterior ocellus; postocellar area not defined laterally; postocellar 

 line subequal to the ocellocular line; hypopygium short, broadly rounded apically; 

 stigma broad at base, tapering to a pointed apex; third cubital cell nearly quadrate. 

 Testaceous; head above antennse, meso- and meto-notum, tibise (except beneath), 

 tarsi, apical three tergites and apical stemite black; clypeus, labrum, mandibles 

 (except piceous apices) and base of venter pallid. Wings dark brown; venation 

 black. 



1 Contribution from the Bureau of Entomology, Forest Insect Investigations. 



