TWENTY-NINTH: ANNUAL MEETING. 55 
TG DEE ORY Es Oe 2 am S Ver ODER RES CET RESO SG. 00 ic) BRL EKG caer net Eocene 19 
Mecsmoncsor less redorsyellowain. cee ee mite ois she aise ae eee assis side as 17 
ai Wersawholliva yell Ow: spurs tars aic:5:0% nies UstarSabve citer sisei 8 fulvipes Walsh. 
IO Gies Thal ope soe VOlkcs As oo LEMME 5 oy 6 cr ite et Bee eee ee MN TR fee 18 
Se bioran dutarelsyOllOwitsces ac:s.01 acca ase ee rae chon sees tibialis Wied. 
Hind femora largely or wholly red; thorax red.......... ‘ricolor Macq. 
19.—Abdomen with more or less yellow hair or pile......................0.. 20 
Abdomen wit hwblackshainiorpile Onl yenss eines eek eisai eile ne 8 ae 21 
20.—Abdominal segments, 2-5, with a broad band of short, appressed golden 
rufescent pile, not concealing the ground color when seen vertically, 
chrysites O. Sacken. 
First two or three segments with yellow hair; alule conspicuously 
Ve LO Wasriy ert ets cet svece ooo ere ota a eet Choe ESE Kee dives Westw. 
ie Win eS nearlvenyaline: 0. <2 ce co vce socks cee ameter crassipes Westw. 
Winespyellow Ol, WROWMNn. sic s/eclee cece ssc cece rubidapex Wied. 
lavatus Gerst. 
xanthopterus Loew. 
decor O. Sacken. 
carbonifer O. Sacken. 
biteniatus Bell. 
luteipennis Loew. 
simplex Loew. 
* Mypas fulvifrons Iliger. A single specimen, from Florida, in the University 
collection, agrees well with Illiger’s description; less well with Wiedemann’s, 
though I doubt not the species is the same. 
V Mypas decor O. Sacken. Two specimens, from New Mexico (F’. H. Snow) and 
Venta de Zapilote, Mexico. 
¥ Mypas basalis Westwood. Numerous specimens from New Mexico (F. H. 
Snow). Westwood’s description leaves no doubt of the identification of this 
well-marked species. 
Mypas carbonifer O. Sacken. A single specimen from Chapada, Brazil, I 
refer provisionally to this species. The specimen agrees with the description, 
save that the interior of the cells of the wings is distinctly lighter colored, and 
the claws are not reddish. There are some whitish hairs on the face. 
Mypas rubidapex Wiedemann; Brauer, Syst. Zool. Stud. pl. f. 2. Three 
specimens, from Mexico. One, a female, has the antenne black, with the bul- 
bous portion of the lamella yellow. This same specimen has the anal angle largely 
whitish. The others, male and female, have the first two joints of the antennae, 
only, black, and neither has any whitish color in the ana] angle. In all the 
specimens the abdomen is deep black, without distinct violet or blue luster. A 
single specimen from Yucatan has the alule black, but the abdomen is deep 
violet. I discover no other differences. 
Mypas dives Westw. Five specimens, male and female, from Brazil, appear 
to belong to this species, especially characterized by the light yellow alule, which 
show very conspicuously in the folded wing. The wings are yellow, with the 
posterior part yellowish hyaline. The abdomen is brilliant blue, with yellow pile 
at the base. The specimens vary in length from 38 to 50 millimeters, but they 
are not nearly so robust as that of the species mentioned below. 
Mypas——sp.? A large specimen from Mexico I at first thought might 
‘belong to a variety of dives, and I am not sure that it is distinct. The wings 
