6 HYMENOPTEEA. 



closely covered with a fulvous pile ; the pro- and mesonotum sparsely punctured and 

 shining; pleura? opaque, obliquely striated, except in front below the tegulse; meta- 

 notum opaque, closely pilose, the base rugose, the rest closely transversely striated, 

 the centre depressed towards the apex ; scutellum depressed in the middle, the apex 

 longitudinally striated; mesonotum with a furrow down the centre, the furrow not 

 distinct at the base. Basal joint of the petiole pruinose, curved ; the rest of the 

 abdomen pruinose, the apical segment bearing some longish black hair. Legs densely 

 pruinose. Second cubital cellule at the bottom three times the length of the third, 

 and at the top not much shorter than the space bounded by the first transverse cubital 

 and first recurrent nervures ; second recurrent nervure received quite close to the 

 second transverse cubital ; third cubital cellule at the top as wide as at the bottom. 



The male has the head below the antenna? densely covered with golden pile ; and the 

 apex of the clypeus broadly transverse. 



The sericeous spots on the thorax are formed as in A. miliaris, from which the 

 male is readily known by the clypeus being transverse. In the female the clypeus does 

 not project so much, and the apex is broadly incised ; the pile is sparser, especially on 

 the thorax, which has not the velvety appearance ; and the third cubital cellule is wider 

 at the bottom, and not much narrower there than at the top. A. iridipennis is also 

 smaller than A. miliaris. The allied A. gaumeri is longer, is distinctly bluish in tint, 

 has the clypeus flatter and transverse at the apex, &c. 



* 5. Ammophila centralis. (Tab. I. figg. 12 ; 12 a, 6 .) 



Nigra, opaca, longe nigro-hirta, abdominis segmento 2° subtus testaceo, metathorace eoriaeeo, clypeo inciso ; 



alis fuscis. <$ . 

 Long. 20 millim. 



Hob. Guatemala, El Reposo 800 feet, San Geronimo (Champion). 



The eyes are large, projecting, and converge on the lower side. Face covered with 

 silvery pile ; clypeus broadly incised in the middle ; hair longish and rather dense ; 

 vertex slightly depressed in the centre, but without a furrow ; punctuation moderately 

 close, but shallow. Third antennal joint nearly one half longer than the fourth. Pro- 

 and mesonotum shining, closely punctured ; an indistinct furrow in the centre of the 

 former, a distinct broad one in the middle of the latter, and one on either side; 

 scutellum strongly punctured ; pleurae finely rugose, opaque ; a semioblique furrow 

 runs down the mesopleura? from the tegulse ; metanotum rugosely striated, flat in the 

 centre. The pubescence is scarcely so long as that on the head, but dense ; the pleura? 

 have a short silvery pubescence, the apex of the metathorax a longer and denser one. 

 Petiole long. Legs covered with a hoary pile ; the coxa? have longish hair. Wings 

 lighter in tint at the apex ; second cubital cellule at the top but very slightly longer 

 than the third ; the first recurrent nervure received before the middle where the cellule 

 is angled. 



