178 
Psyche 
[October 
NOTES ON THE MEGACHILIDiE 
By Theodore B. Mitchell, 
Department of Zoology and Entomology, North Carolina State 
College. 
Published with the approval of the Director of the North Carolina Agri" 
cultural Experiment Station as paper No. 16 of the Journal Series of the 
North Carolina Station. 
Osmia sandhouseae n. n. 
Miss Sandhouse has kindly called my attention to the fact 
that the name Osmia albohirta (see Journ. Elisha Mitchell Soc., 
Yol. 4, p. 164) is preoccupied, having been used by Brulle in 1840 
in describing a species of Megachile which he wrongly assigned to 
Osmia. This opportunity is taken therefore, to name the species 
for her. 
Megachile manumuskin Vier. = Megachile addenda Cress. 
Upon examination of the type it was found to be identical 
with M. addenda Cress. 
Megachile semimucida Ckll. = Megachile mucida Cress. 
On page 118, Vol. 52, of the Transactions of the American 
Entomological Society the males of M. audax Mitch., M. semi- 
mucida Ckll., and M. mucida Cress, are given as being the same. 
At that time I had assumed that the female of mucida was the 
type, since it preceeded the male in the description. 1 The male 
has been designated as the type, however (Memoirs Am. Ent. 
Soc. 1 , p. 125, 1916) and semimucida therefore, becomes a 
synonym, since the female described under that name is the 
female of mucida. 
Megachile mucida 9 Cress. = Megachile gemula Cress. 
The female described as M. mucida 1 is conspecific with the 
male of M. gemula Cress., which has been designated as the type 
of that species (Mem. Am. Ent. Soc. 1, p. 119). 
Megachile gemula 9 Cress. = Megachile vidua var. Sm. 
The female described as gemula 1 is a variety of M. vidua 
Sm., differing from the typical form in lacking the abdominal 
fasciae. This variety occurs in the southern Appalachians, and 
the fasciae are entirely absent in both males and females. 
1 . See Transactions American Entomological Society, Vol. VII, p. 118 . 
