90 HYMENOPTERA. 



impunctate) very closely punctured. There is a wide central and two somewhat 

 narrower furrows on the meson otum, and a much finer furrow runs outside these; at 

 the extreme base of the median segment is a fine furrow terminating in a large, deep, 

 pear-shaped fovea (widest at the base), which does not reach to the punctured part of 

 the segment. The pronotum, tegulse, tubercles, metanotum, a spot on either side of 

 the scutellum, and two large spots on the sides of the median segment are yellow. 

 Petiole a little longer than the second and third abdominal segments united, furrowed 

 laterally, and dilated at the apex ; the petiole and the second segment are almost im- 

 punctate ; the other segments are finely punctured, the punctuation becoming closer 

 and stronger towards the apex. Pygidial area closely punctured ; the apex rounded, 

 slightly incised. A mark on either side of the apex of the petiole, one on the sides of 

 the second segment, extending all round beneath, and a line on the apex of the fourth 

 segment, yellow ; the apical segments more or less dull rufous. Tibiae stoutly spined ; 

 the tarsi (particularly the anterior pair) bearing long bristles. The anterior and middle 

 tibia? are yellow in front, as are also the anterior tarsi ; the posterior tarsi have joints 

 2-4 broadly whitish, yellow at the base. Antennas stout, thick from the fourth joint, 

 not much attenuated towards the apex, the apical joint longer than broad, the second 

 joint broader than long ; the third joint nearly twice the length of the fourth ; the 

 basal and apical joints are more or less rufous beneath. The second recurrent nervure 

 is almost interstitial ; the third transverse cubital nervure is curved at the base. The 

 pubescence all over the body is short and sparse ; the vertex and mesonotum are almost 

 glabrous. 



The male has the head covered with long fuscous hair, which becomes silvery on the 

 face and clypeus ; the punctuation on the vertex much stronger and closer, and the 

 stria tion on the front also stronger ; the clypeus convex in the middle, and projecting 

 gradually at the apex; the pubescence on the thorax stronger; and the antennas longer 

 and becoming gradually stouter from the third joint. It sometimes has three yellow 

 marks on the scutellum, and the abdominal segments 4-6 banded with yellow at 

 the apex. 



A variable species in coloration. In some specimens the clypeus is almost black ; 

 the scutellum wants the yellow spots ; the yellow on the metanotum is narrow or entirely 

 absent ; the marks on the median segment are attenuated ; and the apical three or four 

 segments are entirely rufous. The same remarks apply to the male. 



^ 5. PhilanthocephaluS piinctifrOIlS. (Tab. VI. figg. 7, head from in front, 6 ; 



7 a, male organ.) 

 Niger, facie argenteo-pilosa ; capite et segmento mediali punctatis; abdominis segmentis 2° et 4°-6 m flavo- 



balteatis ; tibiis tarsisque anterioribus flavis ; alis fere hyalinis. <S . 

 Long. 8 millim. 



Hah. Panama, Bugaba (Champion). 



Vertex and front covered with long fuscous, the face with silvery, hair ; the vertex 



