AMMOPHILA. 11 



centre ; scutellum rugosely longitudinally striated, the interstices being finely rugose ; 

 metanotum flat, the shield-shaped central part distinctly separated and transversely 

 rugose ; metapleura rugose. Two furrows run down from the teguke, the first bending 

 sharply to the second near its apex. Abdomen elongate, narrow, the* apex bluish-black. 

 Wings shorter than the abdomen; the second cubital cellule at the top is a little 

 shorter than the space bounded by the first transverse cubital and first recurrent 

 nervures, and longer than the third at the top ; the third cubital cellule is half the 

 length of the bottom at the top. Legs densely silky- white-pruinose. 



13. Ammophila trichiosoma. (Tab. I. fig. 13, 6 .) 



Nigra, capite et thorace dense cinereo-pilosis, punctatis, scutello rugoso, metathorace transverse punctato ; 



abdominis segmento 2° petiolique apice subtus runs ; alis fusco-violaceis, apice fumatis. S • 

 Long. 14 millim. 



Hab. Guatemala, Capetillo (Champion). 



The hair on the head is long and black, and there is a short silvery pile on the face. 

 The front is not depressed and there is no furrow. Clypeus very slightly and broadly 

 incised in the middle ; the sides oblique. Front ocellus separated from the posterior 

 ocelli by less than half the space between these. Third antennal joint more than twice 

 the length of the fourth. The punctuation on the head is indistinct, that on the thorax 

 rather strong and close. The hair on the thorax is not so long as on the head, but 

 is much closer and thicker and greyish. The central furrow on the mesonotum is wide 

 and distinct ; there is no furrow on the pronotum. The propleurse have an indistinct 

 semioblique furrow. Scutellum strongly, almost rugosely, punctured. A curved 

 furrow runs down from the tegulse. Legs covered with a silvery down ; the coxae with 

 long white hair ; the spines on the tibiae moderately thick. The second cubital cellule 

 above is scarcely longer than the third ; below it is about one fourth longer. 



^ 14. Ammophila picipes. (Tab. II. fig. 4, <? .) 



Nigra, flagello antennarum tegulisque sordide rufis ; pedibus pioeis, basi nigris ; abdomine rufo, basi late nigro ; 



alis byalinis, apice fumatis. c? • 

 Long. 15 millim. 



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



Head and thorax covered with long cinereous or fuscous hair ; apex of the clypeus 

 sinuated, hardly depressed; mandibles piceous towards the apex. Front moderately 

 depressed in the centre. Third antennal joint one quarter longer than the fourth. 

 Prothorax shining, impunctate, elongate, the sides with a curved horizontal furrow; 

 mesothorax rugosely punctured, the mesonotum transversely so. Scutellum longi- 

 tudinally striolated. Postscutellum and metathorax rugose. Petiole longer than the 

 head and thorax united ; red, black above ; the second segment for the greater part 

 red. The second and third cubital cellules variable ; above subequal. 



cc2 



