592 MR. R, E. TURNER OX 



is distinctly longer than the posterior trochanter and femur com- 

 bined ; the second segment is gradually nai-rowed at the base as 

 in jansoui, not broad at the junction with the first segment as in 

 vespoides ; the posterior ocelli are as far from each other as from 

 the eyes, which are nearer to each other both on the vertex and 

 the clypeus than in the two other species. 

 Mat). Obidos, Amazon {DilcJce), November. 



2. AULACOPHILUS VESPOIDES Sm. 



Aulacophilus vesjjoides Sm. Trans. Ent. Soc. London, p. ,305 

 (1869),?.^ 



The petiole is more abruptly and strongly swollen at the apex 

 than in either of the other species, the linear portion shorter, 

 and the second segment very much broader at the base. The 

 median segment is shorter than in jansoni, and the eyes further 

 apart on the vertex ; the colour of the legs and antennae is also 

 diflferent. 



Hah. Brazil {Sicainson). 



3. Aulacophilus jaksoni, sp. n. 



5 . Nigra ; opaca ; segmento primo petiolo, calcariisque ferru- 

 gineis ; alis subhyalinis ; costa late fusco-hyalina, venis ferru- 

 gineis. 



Long. 10 mm. 



$ . Head, thorax, and median segment very finely and closely 

 punctured, the frontal sulcus distinct, but very delicate ; posterior 

 ocelli as far from the eyes as from each other, the eyes about 

 half as far again from each other on the clypeus as on the vertex. 

 Antennse short, much thickened towards the apex ; second joint 

 of the flagellum nearly as long as the first and third combined. 

 Mesopleurse very coarsely and closely horizontally striated, the 

 area immediately below the tegulse much more finely striated. 

 Dorsal surface of the median segment about half as long again 

 as the scutellum and postscutellum combined, the median sulcus 

 distinct, the sides of the segment almost smooth, not irregularly 

 obliquely striated on the upper part as in vespoides ; the apical 

 slope obscurely transversely striated, with a deep median sulcus. 

 Petiole of the first abdominal segment a little longer than the 

 hind femur ; the swollen apical portion about twice as long as 

 its apical breadth, mvich more slender and elongate than in 

 vespoides ; second segment gradually narrowed to the base ; the 

 third, fourth, and fifth segments with a narrow, dull brown, 

 apical band. Second abscissa of the radius fully as long as the 

 distance between the recurrent nervures on the cubitus ; first 

 recurrent nervui-e interstitial with the first transverse cubital 

 nervure ; transverse median nervure interstitial with the basal 

 nervure. 



. Hab. Ohontales, Nicaragua (Janson). 



Difiers from vespoides as noticed under that species in the key. 



