P. CAMERON. HYMEN OPTERA. 247 



2 nd ; the récurrent nervure is received in the 2^à. cubital cellule, the cubitus being bent 

 obliquely, down towards it ; transverse médian nervure curved, issuing from the top of the 

 lower fourth of the nervure. Q. 



Length 16 mm.; terebra 17 mm. 



Vertex smooth, the lower part of the front irregularly rugosely punctured on the 

 outer side. Face transversely rugosely punctured-reticulated ; the clypeus less strongly so, 

 distinctly depressed and separated from the face, its top forming a semicircle. The upper 

 tooth of the mandibles is longer, broader and more clearly separated than the lower. Malar 

 space transversely rugose, fully one half the length of the eyes, which are large, parallel. 

 Mesonotum closely, finely, distinctly punctured, the basai half of the middle lobe smooth and 

 shining, the lobe clearly separated, reaching to the middle and becoming gradually narrowed 

 to a fine point; the scutellum is more strongly punctured, its sides keeled to the middle. 

 Metanotum coarsely, transversely reticulated, as are also, but less strongly, the metapleurae. 

 Propleurae almost smooth, except for a wide crenulated border above. Mesopleurae closely 

 punctured, except at the middle above, which is smooth; the lower part is widely depressed 

 and closely, obliquely striated. The ist abdominal segment is as long as the following 2 

 segments united ; the base is smooth and raised in the centre, the middle part irregularly 

 reticulated, the apical finely, not very closely punctured. 



2. Cenocoelius latiannulatus sp. n. 

 Bivak Island, January. 



Black, the 6* to 12A of flagellum of antennae, the greater part of the anterior femora, 

 anterior tibiae, basai three-fourths of the middle, basai fourth of the posterior basai joint of 

 the 4 anterior tarsi, except at the apex and the basai 2 joints of the posterior and the 

 trochanters, white ; wings hyaline, narrowly infuscated along the stigma; the i st abscissa of 

 the radius about one fourth shorter than the 2 nd ; the base of the 2 nd abscissa of the cubitus 

 is sharply bent downwards and angled where it joins the récurrent, before the apex of the 

 basai fourth; the transverse médian nervure is received shortly, but distinctly beyond the 

 transverse basai; the anal nervure is received at the lower part of the nervure. Q. 



Length 17 mm.; terebra 22 mm. 



Vertex smooth, the inner side of the front rather strongly, closely regularly striated, 

 the outer smooth. Face strongly, closely transversely reticulated, a furrow in the lower central 

 half. Clypeus bounded laterally by deep, wide oblique furrows, its middle with a large dépression, 

 longer than wide, rounded above. Mandibular teeth clearly separated. Mesonotum very minutely 

 punctured, trilobate, the middle lobe reaching to the apical fourth; the apex striated; the 

 scutellum is more strongly and regulated punctured ; it is bordered laterally by strong curved 

 striae, as is also the post-scutellum. Metanotum at the base in the centre irregularly longi- 

 tudinally reticulated and with a strong keel down the middle; the apical central part closely, 

 rather strongly transversely striated ; the sides closely longitudinally reticulated. Top of pro- 

 pleurae smooth and shining, except at the apex; from the latter runs a band of oblique striae 

 joining a longitudinal oblique band of stronger, more clearly separated striae. The mesopleurae 

 at the tegulae closely obliquely striated, raised and distinctly separated, the middle part is 

 finely, irregularly punctured at the base, the rest smooth, the apex below this closely, rather 



