OF WASHINGTON. 67 



clearly like those observed in Ohio, were received from Mercer 

 County, Pennsylvania, which adjoins Trumbull County, Ohio. 

 The farmer pending the larvae described their work, and stated 

 that they had appeared in his section for the first time. Of 

 course this last statement is incorrect, but it might be safely 

 said that they had not been seriously abundant before. 



While both of these so-termed species are widely distributed, 

 it is interesting to note with what rarity they occur in destruc 

 tive numbers, even in approximately the same locality. 



The question of the identity of these two forms must, of 

 course, still remain obscure until further rearings can be made. 

 That two species, differing only or even mainly in color, whose 

 larvae are not distinguishable in appearance or method of 

 attack, should inhabit the same locality and food plant would 

 constitute an interesting biological problem. 



Of the writer's Ohio specimens, H. fractilinea was first 

 determined for him by Prof. G. H. French ; and H. mi-sera by 

 Prof. John B. Smith, who stated that he had in his collection 

 a specimen of this latter form taken in Colorado by Bruce, and 

 another one bred by Dr. Otto Lugger; also several specimens 

 of H. fractilinea from Doctor Lugger, which he thought were 

 reared also. 



A rather poorly illustrated note on these forms will be found 

 in Bulletin 51, Ohio Agricultural Experiment Station, pages 

 139-141, figures 22 and 23, 1893. 



Doctor Stiles presented the following note : 



THE TYPE SPECIES OF CIMEX LINN^US, 1758. 



By CH. WARDELL STILES. 



The writer has been requested to examine the question of 

 the type species of the genus Cimex Linnaeus, 1758, and to 

 place his opinion in regard to the same on record. After an 

 examination of the literature covering the case, he is of the 

 opinion that lectularius, the common bedbug, is the type of 

 Cimex. This decision is based upon the Linnsean rule. Lin 

 naeus in 1751 gave the following rule to govern the division 

 of his genera : 



" Si genus receptum, sectmdum jus naturae et artis, in pltira dirimi 

 debet, turn nomen antea commune manebit vulgatissimae et officinali 



plantse." 



It seems to be beyond question that lectularius was the most 

 common of the species of Cimex mentioned by Linnaeus, and 



