1S!)6.] 27 



Duftschin.), from southern Europe and Morocco. He appears to 

 have completely overlooked Wollaston's writings on the subject, hence 

 one of the names adopted by him cannot stand. Moreover, the 

 localities given by him for two of the species are rather misleading, 

 as the insects in question are quite cosmopolitan, and carried every- 

 where by commerce — in grain, flour, ground-nuts, &c. — one of them 

 being often found (like Triholium, &c.) in bread. The following 

 table, based upon a large number of specimens from many localities, 

 shows the differences between the three species now recognized as 

 European : — 



Antennary orbits (or sides of the front) moderately prominent, not extending back- 

 wards so as to hide the anterior margin of the eyes as seen from above. 



The antennary orbits separated from the epistoma (or clypeus) by a distinct 

 furrow ; head (the epistoma excepted) and prothorax coarsely, closely punctate, 

 the punctures on the prothorax becoming very coarse and dense towards the 

 sides ; prothorax much broader than long ; elytra coarsely punctate-striate, with 

 one or more of the inner interstices irregularly biseriate-punctate, and the others 

 uniseriate-punctate depressus, Fabr. (1790) [= imicolor, Oliv. (1790)]. 



The antennary orbits not separated from the epistoma by a distinct furrow ; 

 head and prothorax more finely and more sparsely punctate, the punctures on 

 the prothorax becoming very little coarser towards the sides ; prothorax con- 

 siderably broader than long in the male, still broader in the female*; elytra 

 more finely punctate-striate, the interstices uniseriate-punctate throughout, in 

 some specimens transversely wrinkled; size smaller... 



Ratzeburgi, Wissm. (1848) [= ambiguus, WoU. (1857) ; 



floricola, Mars.f (1876)]. 

 Antennary orbits (or sides of the front) prominent and more raised, extending back- 

 wards so as to hide the anterior margin of the eyes as seen from above, and 

 limited inwards by a deep oblique furrow extending backwards from the 

 transverse frontal groove ; head and prothorax finely and moderately closely 

 punctured, the punctures on the prothorax becoming coarser towards the sides ; 

 prothorax much broader than long ; elytra finely punctate-striate, the punctures 

 closely placed, the interstices uniseriate-punctate, the inner ones in some speci- 

 mens irregularly biseriate-punctate ; body slightly flattened above... 



suhdepressus, WoU. (1864) [_■= bifoveolatus (Baudi), 



{nee Duftschm.), (1876), Seidl.]. 



P. depressus, Fabr. — This species is generally distributed in 

 Europe ; it is found under the bark of various trees, especially oaks. 

 It has, perhaps, not yet acquired a taste for meal. I have examined 

 numerous specimens from Chinon, France {coll. F. Bates), Pau 



* Dr. Seifilitz gives the prothorax "as long as broad ;" but Wissmann, in comparing his 

 insect with P. depressus, makes no mention of this difference, merely stating that the prothoi-ax 

 is more distinctly narrowed towards the base. 



t This insect was supposed by Marseul to have been found in a flower, in.stead of " in Hour," 

 hence the name ! 



