A. labrosa is cited from Mexico by its describer, but I have not seen it from that country. Mr. Robertson sends it to me from Illinois. There are two species found in Texas, which may be expected also across the Mexican border. One of them is what passes for A. sumptuosa, Sm., in this country, and indeed agrees with Smith's description; but Col. Bingham finds that a co-type in the British Museum belongs to Section A above (spur minutely ciliate), while our insect belongs to Sect. B. It is just possible that the B. M. co-type is not identical with the true type of sumptuosa; if this is not so, our sumptuosa will have to be renamed. The other Texan species referred to was recorded by Cresson as A. lucidula, Sm., but it differs from that, and is referable to A. humeralis, Patton, of which it may perhaps constitute a geographical race.