212 Memoirs on the Coleoptera 



the prothorax, the flavate antennae with the apical half gradually- 

 dusky and the median thoracic stria entire; nothing is said as to 

 elytral iridescence. In flavicornis the antennae are very pale and 

 equally flavate throughout the length, the head very distinctly 

 narrower than the prothorax, even in the female, the difference 

 undoubtedly still more notable in the male, for, as in Diplocheila, 

 the head is a little larger in the female than in the male; m flavi- 

 cornis the median thoracic stria is not entire, extending only 

 between the feeble transverse impressions, and the elytral surface 

 is distinctly iridescent. In his original description of pulchellus — 

 from Evansville, Indiana — LeConte states that the middle black 

 spot of each elytron is marginal, and that the antennae are "ob- 

 scurae, articulis 3 pallidis"; I fail entirely to comprehend the de- 

 scription of the antennae, and, in all my specimens, the middle elytral 

 spot is equally and narrowly separated from the sides and suture. 



Calathus Bon. 

 In Memoirs IV, 1913, page 159, I briefly referred to the species 

 of the Pacific coastal regions, basing the remarks upon rough 

 determinations of species in my collection, identified by comparison 

 with the material of the Horn and LeConte collections, but find 

 on more careful study that these identifications were in some cases 

 erroneous. Behrensi, for example, is the notably stout subparallel 

 form, with red prothorax, found abundantly about San Francisco; 

 it was said by Mannerheim to occur at Fort Ross, in Sonoma Co., 

 and had been previously described by Dejean under the name 

 ruficoUis; quadricoUis of LeConte is a very much narrower species. 

 The true obscurus, from an unrecorded locality in southern Cali- 

 fornia, and represented by a single female said to be 10 mm. in 

 length, does not seem to be in my collection at present, although 

 longulus may be closely allied. Finally, the specimen from Guada- 

 lupe Island, which I there referred to quadricoUis, proves to be a 

 different thing and is described below under the name insularis. 

 My Alaskan material does not include ingratus Dej., or incommodus ^ 

 Mann., but there are several undescribed species, smaller in size, 

 which were said to have been taken on St. Paul Island, and, although 

 personally I have no reason do doubt this locality, Mr. Wm. T. 

 Davis informs me that some Hemipterids received by him from the 



