THE ENTOMOLOGIST, 59 



which the ascertamed species belong, is exceedingly interest- 

 ing, and becomes more so when compared with the Madeiran 

 list published in 1857. In each instance Mr. Wollaston 

 divides the Coleoptera into twelve sections, arranged as 

 under, and to each I have added the total number of species 

 unquestionably ascertained to be indigenous or naturalised : — 



MADEIRAN. CANARIAN. 



I. Geodephaga 71 113 



II. Hvdradephaga 4 22 



III. Philhydrida 13 21 



IV. Necrophaga 64 114 



V. Cordylocerata 13 51 



VI. Priocerata 30 89 



VII. Rhyncophora 94 176 



VIII. Eucerata 4 15 



IX. Phytophaga 19 44 



X. Pseudotrimera 19 19 



XI. Heteromera 41 125 



XII. Brachelytra 88 141 



460 930 



There are many interesting conclusions to be drawn from 

 these lists, not indeed as contrasted with each other, for the 

 results are very similar, but as compared with other and less 

 insular regions of the earth : the learned author has not 

 failed to avail himself of the information they afford, by ap- 

 pending some general observations of great value, but he 

 does not seem to me to make suflicient allowance for the 

 great difficulty that attends the acquisition of anything ap- 

 proaching to a complete series of the species in some of these 

 sections : such is particularly the case with the longicorns, a 

 group to which he has devoted particular attention : if we 

 compare the difficulty and uncertainty of collecting longicorns 

 (Mr. Wollaston's Eucerata) with the ease and certainty of col- 

 lecting Geodephaga, we shall at unce find an explanation of the 

 great preponderance of the latter over the former. I by no 

 means desire to infer that other and physical causes do not 

 also contribute to this discrepancy, but let any stranger come 

 to England in search of our longicorns, and devote even the 



