No. 397.) VISITORS OF THE CAPRIFOLIACE.E. 39 
Viburnum alnifolium Marsh. Hobble Bush. 
The inflorescence is in broad, flat corymbs of flowers of two 
different sizes. The center florets are small, 5 mm. broad, 
white tinged with red, and in autumn produce bright-red ber- 
ries; while the marginal ones, a single row of which surrounds 
the corymb, are large, 20 mm. broad, white, and sterile. Their 
size has been increased at the expense of their fruitfulness, and 
as their use is to attract the attention of insects, they open a 
day or two in advance of the inner and smaller florets. “The 
older flowers are actually occupied," Kerner remarks, “in the 
allurement of insects for the advantage of the younger ones." 
Since their conspicuousness is useless to themselves but of 
benefit to the community, they may be said unconsciously to 
play the part of benefactors. The stamens stand nearly erect, 
and spontaneous self-fertilization can easily occur by the pollen 
falling upon the sessile stigmas. 
Visitors: Hymenoptera — Apidz : (1) Apis mellifica L., 3 ; 
(2) Bombus bifarius Cr, 9; (3) Nomada maculata Cr., 9 ; 
Andrenide : (4) Andrena sp.; (5) A. sp. 
Diptera — Syrphide : (6) Syrphus ribesit L.; (7) Brachy- 
palpus marginatus Hunter; Muscide: (8) Myiospila medita- 
bunda F.; Cordyluride : (9) Scatophaga stercoraria L. 
Coleoptera — Elateride: (10) Flater rubricus Say; (11) 
Megapenthes rogersii Hornt; Cerambycidae: (12) Cyrtophorus 
verrucosus Oliv.; (13) Microclytus gazellula Hald.; CEderme- 
ride: (14) Asclera ruficollis Say; Mordellide : (15) Anaspis 
rufa Say ; also Pachyta monticola Rand. 
Hemiptera — two species. Waldoboro, May 9-19. 
Viburnum lentago L. Sweet Viburnum. 
The flowers are homogamous. The stamens are much longer 
than the stigmas and divergent; self-fertilization is not, how- 
!In his list of Coleoptera from the southern shore of Lake Superior, 1896, 
Prof. H. F. Wickham remarks: “ Of the Elateride it is a pleasure to record the 
capture of a fine specimen of Megapenthes rogersii, a rare insect recorded hitherto 
only from Canada.” The specimen taken by the writer was determined by Pro- 
fessor Wickham. 
