vi INTRODUCTION. 
The Otiorhynchid material examined by me includes that belonging to the 
U.S. National Museum, to whom we are indebted for co-types of all the species here 
described from their collection, as well as for many N.-American forms for comparison. 
From Costa Rica we have received during recent years numerous interesting species, 
both from Pittier and Biolley. Mr. Wickham, too, during his visit to Mexico in 
1909, secured various Otiorhynchids, and, as usual, has kindly allowed us to retain 
any of these specimens that we required. Signor A. Solari, again, has also permitted 
us to keep for the British Museum the types of such species as have been described 
by me from his collection, which includes a portion of that of Jekel. The ‘ Sommer 
collection” of Curculionids (including various types of Boheman, &c.) having been 
recently acquired by Prof. Poulton for the Oxford University Museum, we have been 
enabled to verify the names of certain species left unidentified by Dr. Sharp, and this 
involves some slight corrections to the synonymy of the “ Otiorhynchine Aptere,” 
which are noted in the Supplement. 
As stated in a footnote on p. 317, various Apionine left undetermined by Dr. Sharp 
for want of sufficient material, with such forms that have since come to hand, have 
been handed over to the specialist Herr Hans Wagner for study, and his descriptions 
of the new forms will be published elsewhere. 
Of the fifteen coloured Plates issued, the first six were drawn by Mr. Purkiss, the 
others by Mr. E. Wilson of Cambridge. 
It will not be out of place to note here that the enumeration of the Coleoptera, 
commenced in 1879, is now completed, bringing the total number of species to 18,039, 
for which eighteen Volumes have been required. 
G. C. C. 
December 1911. 
ERRATA. 
Page Line 
211 17 for pterygonalis read pterygomalis, 
223 2 for conicus read conicollis. 
