IfX) 



HYMENOPTERA. 



141. MkCACHILE PIGNATA. B.M. 



Mi'p^acliile pii<jimtus. Say, Bost. Journ. Nat. Hist. i. 408 (1837). 

 Hab. North Amcrira. 



142. Megaciiilk prlina, n. s. 



Female. Length fi lines. — Black, the face on each side covered 

 with snow-white j)ubcsrcnce ; the three basal joints of the an- 

 tenn.T black, the rest of the joints testaceous beneath ; the sides 

 of the thorax covered with snow-white pubescence, a small tuft 

 of the same colour behind the tegulae ; wings subhyaliue, their 

 ajjical margins fuscous, nervures black; the legs have a thin 

 snow-white pubescence, that on the tarsi beneath dark brown ; 

 the claws ferruginous, their tips black ; the calcaria pale testa- 

 ceous. Abdomen obconic, the four basal segments have a deep 

 transverse depression; the sides of the basal segmentand the mar- 

 gins of all the segments laterally fringed withVhite pubescence ; 

 the apical segment covered with" short hoaiy pile ; the whole ab- 

 domen has a scattered short black pubescence; beneath, the 

 I)ollen-brush white. 



Hah. United States. (Coll. F. Smith.) 



143. Megachile lanuginosa, n. s. B.M. 



Female. Length 4i lines.— Black, on each side of the face is 

 a httle snow-white pubescence, on the upjjer part of the head it 

 IS very sparing and black, as it is also on the disk of the thorax ; 

 on the cheeks, sides of the raetathorax, prothorax and basal seg- 

 ment of the abdomen it is white, and has a dowTiy appearance ; 

 the rest of the abdominal segments have a lateral short white 

 marginal fringe ; wings subhyaline, their apical margins faintly 

 clouded ; the brush on the abdomen beneath pale yellowish white'. 



Male. Length 4 lines.— Head wider than the "thorax, anterior 

 legs simple, the claw-joints ferruginous, the margin of the apical 

 segment jagged iiTegularly. The specimen in bad condition. 

 Hab. St. John's BluflF, East Florida. (Coll. E. Doubleday.) 



144. Megachile bidentata, n. s. B.M. 

 Male. Length 5 hues.— Black, the face thickly covered with 



a bright pale ochraceous pubescence, that on the thorax is of a 

 similar colour ; the wings subhyaline, slightly clouded at their 

 apical margins, the nervures femiginous; the"anterior legs have 

 then- coxa; unarmed and their tarsi simple ; the femora beneath 

 tnnged with long pale pubescence, that on the tarsi beneath is 

 pale fulvous. Abdomen, the apical margins of the segments 

 have a fascia of pale pubescence, and the fifth and sLxth densely 



