555 



in other similar places. The cells are arranged several together 

 end to end, each being cylindrical in shape, bluntly rounded at 

 the basal and concave at the opposite end, from which issuance 

 takes place. They fit so loosely together that they may be 

 readily broken apart without causing material damage, but are 

 nevertheless neatly fashioned, the leaf-segments closely worked 

 into place. The apical end is sometimes formed of a separate 

 circular segment of about the same diameter as the cell. In 

 size the cells are about 6 or 7 by 9 to 13 mm. The larva, 

 on completing its growth, lines the cell with a dark brown 

 layer of silk. 



Megachile timberlakei Cockerell. 



Cockerell, Canad. Eiitom. 52, p. 119, 1920. 



This species was taken in Honolulu as early as July, 1904 

 (Terry), and it is probable that Perkins confused it with 

 palniaruin, as his description of the scopa of the latter species 

 applies much better to timberlakei. It has been collected as 

 follows: on the coast of Kauai (Giffard) ; Makua (Swezey, 

 Gififard, Timberlake), Kahala (Giffard), Honolulu, including 

 Kaimuki and Waikiki (Terry, Swezey, Timberlake, Bridwell 

 and Williams ) , Ewa Coral Plain ( Swezey ) and Makapuu Head 

 (Wihiams) on Oahu ; Lahaina (Timberlake) and Puunene 

 (Swezey) on Maui; Alaunalei, Lanai (Giffard) and Kawaihae, 

 Hawaii (Swezey). The bees visit the flowers of Antigonon 

 leptopns, Bidens pilosa and presumably other flowers. If I 

 remember rightly they were found at Makua, visiting the flowers 

 of the littoral species of sandalwood (Santalnm littorale). 

 During the summer months the females are frequently seen on 

 windows in houses, and this unusual habit for a bee is explained 

 by their fondness of nesting about houses. M. schauinslandi 

 is also often found on windows, and its presence there may be 

 explained in the same way. 



The nests of timberlakei are found in crevices about houses 

 and consist of long strings of cells attached end to end and so 

 firmly joined by the overlapping leaf-segments that they do not 

 readily come apart but form a continuous cylinder. These 

 cylinders present rather a ragged appearance, as the outer leaf- 



