528 



MR. R. E. TURNER ON [May 12, 



first two joints of the flagellum are aboiit equal in length. The 

 posterior ocelli are a little further from the eyes than from each 

 other and a little further from the posterior margin of the head 

 than from the eyes. 



S . As in the female, but more slender ; the head and thorax 

 shining, almost smooth ; the second abdominal segment narrow, 

 about one-third longer than the first, very little more than half 

 as wide at the apex as the third segment ; the fourth segment 

 the widest ; the posterior tibiae more dilated than in the female ; 

 the scutellum wholly black, the second abdominal segment 

 f<}rruginous with a large black spot in the middle. The eyes are 

 only separated at the base of the antenna? by about half of the 

 length of the scape and diverge towards the vertex less strongly 

 than in the female. 



Length. S 6 mm., 2 7 mm. 



ffab. Mackay, Queensland (Turner-) ; May. 



Crabro (Rhopalum) agilis Sm. 



Crabro {Rhojxdimi) agilis Sm. Proc. Linn. Soc, Zool. iii. p. 18, 

 1858, 2. 



Hah. Celebes (Wallace) ; Mackay, Queensland [Tttrner). 



Crabro prosopoides, sp. n. 



2 . Cvlypeus slightly produced, with a median carina from the 

 base not reaching the apex, clothed with silvery pubescence. Eyes 

 separated at the base of the antennae by a distance scarcely 

 exceeding one-quarter of the length of the scape ; the first joint 

 of the flagellum fully as long as the second. Mandibles bidentate 

 at the apex, the teeth short; maxillary palpi six- jointed, labial 

 palpi four-jointed. The posterior ocelli about one-third further 

 from each other than from the eyes and about as far from the 

 posterior margin of the head as from each other. Head very 

 closely and finely punctured, the front smooth and concave. 

 Pi-onotum transverse and linear, the angles not prominent ; meso- 

 notum finely and closely punctured, the groove on the meso- 

 pleurae well marked. Median segment steeply, but not vertically, 

 sloped posteriorly, the triangulai- space at the base smooth and 

 shining, with a shallow median sulcus, and a transverse row of 

 deep punctures at the extreme base ; the posterior slope with a 

 large, deep depression at the base, very delicately and closely 

 transversely striated. Abdomen very finely and closely punctured, 

 the first segment one-third longer than the second, very nari'ow 

 at the base, the apex half as wide as that of the second segment, 

 the second segment nari-ower than the third, the second and third 

 segments moderately constiicted at the base, the apical segment 

 triangular. The recurrent nervure is received at the middle of 

 the cubital cell. 



Black ; the scape of the antennte, pronotum, tegulse, scutellum, 

 postscutellum, tibise, tarsi, and the apex of the femora yellow ; 

 the flagellum light ferruginous. Wings hyaline, nervures fuscous. 



