204 PROCEEDINGS OF THE NATIONAL. MUSEUM vol. 65 



base, arcuately rounded at the sides; finely and not very closely punctured. 

 Scutellum rather small, curvilinear. Elytra at base not quite as broad as 

 the broadest part of the thorax, about three times as long as the thorax, w'ith 

 a very slight transverse impression at the base, without other impressions; the 

 punctuation irregular, fine but distinct, the punctures moderately separated 

 from each other. Underside sculptured as above. Front and intermediate 

 coxae rather widely separated. The prosternal process broad, flat, parallel, 

 truncate posteriorly, and fitting close to the metasternum, the process bordered 

 on each side by a distinct but fine line, the lines diverging slightly as they 

 approach the anterior margin of the prosternum ; with a few large shallow 

 punctures. Abdomen with no division between the first and second segments, 

 together about half the length of the abdomen, the third and fourth short, fifth 

 semicircular. Tarsi short, the first joint scarcely longer than the second. Claws 

 dilated at the base, the dilation appearing in some positions like a large tri- 

 angular tooth. 



From the foregoing description it will be seen that this species 

 differs from the typical species of Mastogenius in having a groove in 

 the sternum for a portion of the antennae, and in having the basal 

 joint of the tarsi short, etc. 



My first impression was that it must be made the type of a new 

 genus; but an examination of some allied forms has convinced me 

 that this would be premature. 



The type of this species is in the British Museum, and has not 

 been examined by the writer. 



CORRECTIONS 



In my paper on The Leaf and Twig Mining Buprestid Beetles 

 of Mexico and Central America ^^ the following errors have occurred : 



Page 6: The paragraph beginning with line 29 should be placed 

 under the genus PacJiyschelus^ just before the key to the species on 

 page 7. 



Page 73 : The first six lines in the key to the species of Leiopleura 

 should read as follows : 



5. Narrow species, more than two times as long as wide ; pronotum with a deep 

 depression near posterior angles, where the surface is obsoletely rugose, 



the sides distinctly margined minuta Kerremans. 



Broader species, not two times as long as wide; pronotum without a deep 

 depression near posterior angles, where the surface is strongly rugose, the 

 sides obsoletely margined nigra Waterhouse 



« Proc. U. S. Nat. Mus., vol. 62, 1922, Art. 8. 



