HYMENOPTERA. 115 



striation, sides of the face covered with hoary pubescence. Thorax 

 very minutely punctm-ed, and having a few scattered distinct 

 punctures, the pubescence hoary; the wings hyaline, faintly 

 clouded at their apical margins ; legs dark rufo-testaceous, the 

 tarsi pale ; the floccus and scopa silvery white. Abdomen very 

 closely and dehcately punctured, the apical margins of the seg- 

 ments have a narrow white marginal fringe, the first and second 

 more or less interrupted, the apical fimbria fusco-ferruginous. 

 Hub. United States. (E. Doubleday, Esq.) 



This species resembles the A. fuscata, hut is at once distin- 

 guished by the sculpture of the thorax. 



138. Andrena clypeata, n. s. B.M. 

 Male. Length 24 hues.— Black, the clypeus yellow arid 



having two minute black spots ; the head and thorax have a thin 

 clothing of ochraceous pubescence ; the wings subhyaline, splen- 

 didly u-idescent, the nervures pale testaceous ; the legs have thin 

 ochraceous or pale fulvous pubescence, the apical joints of the 

 tarsi rufo-testaceous. Abdomen oblong-ovate, the apex has a 

 Uttle pale fulvous pubescence. 

 Hub. St. John's Bluff", East Florida. (E. Doubleday, Esq.) 



139. Andrena fragilis, n. s. B.M. 



Male. Length 3i lines. — Black, the face broad and thinly 

 covered with ochraceous pubescence, the cheeks much swollen 

 and produced beneath ; the disk of the thorax and the scutelhim 

 smooth and shining ; wings subhyaline and iridescent, the ner- 

 vures pale testaceous ; the legs have a pale ochraceous pubes- 

 cence, the tarsi pale rufo-testaceous. Abdomen lanceolate, highly 

 polished, the apex fulvous. 

 Hab. United States. (E. Doubleday, Esq.) 



140. Andrena frigida, n. s. B.M. 



Female. Length 4 lines. — Black, the head and thorax covered 

 with long griseous-yellow pubescence, yellowest on the disk of the 

 thorax ; the depressions on each side of the face along the mar- 

 o-ins of the eyes covered with short dark brown pubescence, the 

 mandibles ferruginous at their extreme apex and ciliated with 

 long ferruginous hairs ; the disk of the thorax opake ; wings 

 subhyahne, faintly clouded at their apical margins, tegulae and 

 nervures testaceous ; legs dark rufo-testaceous, the apical joints 

 of the tarsi ferruginous ; the floccus and scopa beneath silvery- 

 white, the latter pale fulvous above, the tarsi beneath fulvous. 

 Abdomen nigro-seneous, the margins of the segments testaceous, 



