44 HYMENOPTEEA. 



laterally ; the second segment has a broad black stripe on the apical half, and the third 

 is narrowly black at the apex. The coxae are black at the base ; the hind femora are 

 broadly lined with black above ; and the hind tibiae are obscurely lined with black 

 behind. 



J 



C. Metanotum usually striated and with a V-shaped excavation on the apical half. 



(Species 11-14.) 



11. Trypoxylon apicipenne. (Tab. IV. fig. 5.) 



Nigrum, aureo-hirtum, tegulis, tibiis anticis, medio tarsorum epinisque runs ; metanoto excavato, transverse 



striolato ; alis fnsco-hyalinis, apice fumatis. 

 Long. 18 millim. 



Sab. Mexico, Temax in North Yucatan (Gaumer). 



Antennae microscopically pilose and with joints 2-4 rufous beneath ; the third joint 

 one third longer than the fourth. Eyes at the top separated by less than the length 

 of the third antennal joint ; at the bottom by fully the length of the second and third 

 joints united. Head to the ocelli closely punctured ; behind them shining and im- 

 punctate. Vertex raised behind the ocelli and with a shallow indistinct furrow in the 

 centre. Ocelli almost in a triangle ; a furrow runs down from. them. Clypeus broadly 

 keeled in the centre, the apex projecting, incised in the middle and with a slighter 

 incision on either side of the central one. The clypeus, cheeks, and eye-incision 

 densely covered with silvery pubescence. Thorax shining, finely punctured ; the centre 

 of the metanotum transversely striolated. The usual stripes on the thorax densely 

 covered with silvery (slightly inclined to golden) hair. The centre of the metanotum 

 with a broa V-shaped depression. Abdomen comparatively short, not being very 

 much longer than the head and thorax united ; the first segment one third longer than 

 the second, and raised considerably above it at the apex ; the segments above on the 

 sides bear a close fulvous pile, and the apical ventral segments longish fuscous hair. 



J 12. Trypoxylon cinereo-hirtum, (Tab. IV. figg. 6, 6 a.) 



Nigrum, cinereo-hirtum ; clypeo carinato, aureo-piloso ; fronte eoriaeeo-punctata ; metanoto transverse 

 striato ; basi abdominis segmento 1° medioque tarsorum posticorum luteis ; alis fusco-hyalinis, apice 

 fumatis. $ . 



Long. 13 millim. 



Sab. Mexico, Vera Cruz, Teapa in Tabasco (H. H. Smith), Temax in North Yucatan 

 (Gaumer) ; Guatemala, Paraiso 300 feet, Guatemala city (Champion). 



Front, face, and clypeus covered densely with golden pile; the front and vertex 

 strongly coriaceously punctured and covered with fuscous hairs ; clypeus truncated at 

 the apex, finely and closely punctured; a shallow indistinct furrow on the front 

 Thorax shining, punctured; the metanotum strongly transversely striated, the base 

 aciculately punctured. The pubescence on the thorax is longish and cinereous ; there 



