374 PROCEEDINGS OF THE ACADEMY OF [1897. 



Sceliphron fistulare Dhlb. 



Six specimens. Pedra Branca and Maruru (April) ; Chapada. 

 Sceliphron figulum Dhlb. 



Two specimens. Corumba and Uacarizal (February). 

 Ammophila opulenta Guer. 



A large series of this species from various localities. It is dis- 

 guished by its large size and strong tubercle of mesopleura. The 

 male has the clypeus prominently produced into a tooth, and 

 together with the face, covered with golden pubescence. It is best 

 distinguished by the strongly tuberculate mesopleurse. 



Ammophila miliaris Cain. 



Twelve male specimens. Chapada (January to March) ; Santa- 

 rem. Greatly resembles opulenta, but the mesopleurse not tubercu- 

 late and clypeal prominence shorter. 



Ammophila abbreviata Fabr. 



A large series of both sexes. 

 Ammophila aureo-notata Cam. 



One female and nine male specimens. Chapada (March, April) ; 

 Corumba and Pedra Branca (April) ; Santarem. 



Ammophila moneta Sm. 



Four female and five male specimens. Uacarizal (February) ; 

 Pedra Branca and Chapada (April) ; Santarem. 



A female and five males differ only in the sides of petiole and 

 base of second segment diffused with reddish, and are no doubt A. 

 ragilis Smith. Moneta and fragilis are evidently one species. 



Ammophila asperata n. sp. 



9. — Head with strong scattered punctures; clypeus medially 

 finely punctured, its fore margin broadly and squarely truncate in 

 middle ; fore ocellus separated from the posteriors by a distance 

 equal to less than half that between the latter ; space between hind 

 ocelli equal to less than two-thirds of that between them and eyes ; 

 first joint of flagellum a little shorter than the two following united ; 

 pronotum slightly excised medially; dorsulum coarsely punctured, 

 but still not unevenly, posteriorly with several coarse transversely 

 sinuous striae, and sulcate down middle for its entire length ; scu- 

 tellum longitudinally striate ; postscutellum rugose ; upper surface 

 of middle segment sulcate, rugose medially, the rugae running into 

 fine even striae laterally ; side of thorax rugoso-punctate, the meso- 



