BEES OF THE FAMILY ANDRENIDAE— TIMBERLAKE 379 



foveae pale ochreous, or whitish, broad and extending a little be- 

 low antennae. Head distinctly broader than long. Anterior edge 

 of mandible with a testaceous explanate margin near base. Process 

 of labrum bidentate, the teeth subacute, generally longer than 

 wide. Third antennal joint longer than the next two together. 

 Clypeus more or less polished, with strong, close punctures, which 

 sometimes leave a narrow impunctate line in middle. Frons dull- 

 ish, densely punctured, and obscurely striate. Mesoscutum and 

 scutellum polished, with fine, almost dense punctures, becoming 

 sparser on scutellum and posterior middle of scutum. Meso- 

 pleura shining, but roughened by fine, shallow, close punctures. 

 Basal area rather small, tessellate, and finely rugulose at base. 

 Rest of propodeum like the mesopleura, except that the sides are 

 polished, with scattered punctures and erect hairs on anterior 

 halves. Abdomen polished, with minute, moderately close punc- 

 tures, which become sparse on disk of tergite 1. Middle basitarsi 

 distinctly broader than the hind pair. Stigma about one-half as 

 wide as marginal cell. Second submarginal cell quadrate, receiving 

 the recurrent nervure a little before or behind the middle. Length 

 8.5-12 mm. ; anterior wing 7-8 mm. 



Male. — Similar to female in color, pubescence, and sculpture. 

 Clypeus, except two dark dots, and lateral face marks more or 

 less filling space between clypeus and eyes, yellow. Hair of 

 mesonotum not much shorter than that of mesopleura. Tergites 

 1 to 5 each with an apical hair band, the disk of each in front 

 of band with fairly long, erect light hair. Venter very hairy, with 

 erect hair on disk of segments and a dense apical fringe on seg- 

 ments 2 to 5. Process of labrum deeply emarginate, the tooth on 

 each side triangular and acute. Clypeus shining, with fine, mod- 

 erately close punctures. Third antennal joint barely longer than 

 the next two together. Legs rather robust, the hind tibiae with 

 rather long, loose hair that is somewhat plumose. Apical margin 

 of sixth ventrite strongly reflexed and more or less ferruginous. 

 Latero-apical lobes (parameres) of stipites rather elongate, with 

 a semioval dilation, about four times as long as wide, straight on 

 outer margin, arcuate within, and also with a narrow arcuate 

 expansion on the inner surface of the short basal part. Sagittae 

 subdepressed, broadly fusiform in basal part, then tapering to 

 bluntly rounded apex beneath the slightly overlapping tips of the 

 parameres. Fusiform part of sagittae convex above, and acutely 

 margined on the sides. Length 7-9 mm.; anterior wing, 6.5-7.4 

 mm. 



Ti/jaes.— U.S.N.M. No. 59273. Holotype (female) and allotype. 

 Riverside, Calif., at flowers of Isocoma (or Aplopappus) veneta 

 var. vernonioides, October 13, 1929, and October 9, 1927. 



