94 Mr. Kirsy on Mr. W., S. MacLeay's 
Mr. W. S. MacLeay, in his acute and learned Hore Entomo- 
logice, has furnished the naturalist with a clue which, if heedfully 
followed, will enable him to guide himself through all the intri- 
cacies with which the circumstance here mentioned has perplexed 
his path. This gentleman has first stated with clearness and 
precision the distinctions, so often before confounded, between 
real affinity and those resemblances which are merely analo- 
gical; and has proved satisfactorily, that there exist between 
numerous objects in every department of nature striking coinci- 
dences as to external characters, which do not indicate that they 
are related to each other, or should be placed together in a na- 
tural arrangement. 
In confirmation of the doctrine here alluded to, I have the 
honour to present to the Linnean Society a description of three 
new genera of insects which appear to wear the face of a tribe 
to which they do not belong. 
COLEOPTERA PENTAMERA. 
(Harpalide.) 
CarTAscoPus Kirby. 
Character Essentialis. 
Laban s. Ligula tripartitum : lobo intermedio abbreviato; late- 
ralibus apice latioribus. Labrum emarginatum. 
Character Artificialis. 
Labium tripartitum : lobo intermedio abbreviato. 
Labrum emarginatum : lobis rotundatis. 
Palpi maaillares articulo secundo incrassato. 
Oculi magni, valde prominuli. 
Tibie antice intus medio emarginate. 
Character 
