AMMOPHILA. 5 



The male I refer to the same species has the clypeus and cheeks densely covered 

 with a thick silvery pile, and the former is slightly incised in the middle ; the pleurse 

 have a silvery pubescence ; the scutellum is more distinctly striated towards the apex ; 

 the hair on the head and thorax is longer ; the bluish tint of the body is not so con- 

 spicuous ; and the wings are lighter-coloured towards the middle and base. 



/ 



^ 3. AmmopMla micans. 



Cserulea, fusco-hirta, thorace opaco ; clypeo truncato ; alis fusco-violaceis. § . 

 Long. 20-21 millim. 



Hab. Guatemala, San Geronimo (Champion). 



The face bears some scattered punctures; the vertex and thorax are alutaceous, 

 opaque, of a darker colour than the rest of the body, varying almost into black. The 

 cheeks bear a faint silvery pile ; and, as well as the rest of the head, are covered rather 

 closely with longish black hairs. Clypeus not projecting, furrowed ; the apex broadly 

 transverse in the middle. The furrow on the vertex is deep and moderately broad. 

 The front ocellus is separated from the posterior ocelli by fully half the space between 

 these. The third antennal joint is more than twice the length of the fourth. The 

 thorax has but a very faint punctuation ; the scutellum is more shining, and has some 

 punctures ; there is not a distinct depression in the centre of the mesonotum, but one 

 on either side ; a narrow furrow runs down the mesopleura from the tegulae, and there 

 is a short transverse one beyond it opposite the tubercles. Mesosternal furrow 

 indistinct. Metathorax granular, opaque, indistinctly striated. The thoracic pubes- 

 cence is rather dense and fuscous-black ; the tubercles and a spot on either side of the 

 metanotum are silvery. Abdomen almost shining, and glabrous ; the petiole black, 

 but slightly curved. Legs almost without any pile ; the tibiae with a few bristles. The 

 second cubital cellule is at the top about one fourth longer than the corresponding part 

 of the third ; the first recurrent nervure is received before the middle. 



^ 4. Ammophila iridipennis. 



Nigra, subnitida, thorace fulvo-villoso ; sparse punctata, metanoto pleurisque striatis ; clypeo $ curvato, c? 



transverso ; alis fusco-violaceis. 

 Long. 23 millim. 



Hab. Guatemala, Zapote (Champion). 



Face and clypeus bearing a short, sparse, pale pile ; and, as well as the front and 

 vertex, sparsely covered with longish black hair, and marked with scattered punctures. 

 Front depressed in the centre, where there is an ill-defined furrow. Clypeus broadly 

 convex, the extreme apex depressed, margined, and waved in the middle. Third 

 antennal joint one half longer than the fourth. Pronotum raised broadly in the centre 

 above ; the sides projecting into tubercles. Mesosternum indistincly tuberculate at the 

 base and apex. A j -shaped furrow runs down from the tubercles. Thorax rather 



