246 MEMOIRS ON THE COLEOPTERA 



ably males, and in its more impressed prothorax; the length of 

 pinicola is given as 8.5 mm., and it is from the Huachuca Mts. of 

 southern Arizona. 



It has occurred to me that puncticeps might possibly be the male 

 of obsoleta, but in this case the sexual differences in sculpture would 

 be very remarkable, especially on the elytra, where sexual peculiari- 

 ties of this kind are not observable elsewhere. 



In considering the subdivisions of the Lepturini following Ac- 

 meeops, attention is invited to the general catalogue by Aurivillius, 

 in the Schenkling series and recently published, where some definite 

 and determinative order has been attempted. I think, however, 

 that the compiler has still admitted too few separate genera and 

 has unnecessarily reduced certain American types, which seem to 

 be distinct genera, to the status of subgenera, as, for example, the 

 nearctic so-called Strangalia (Ophistomis Thorns.), Typocerus Lee., 

 and Bellamira Lee., which are considered subgenera of Strangalia 

 in the broad sense, the latter genus in its typical form being repre- 

 sented in his opinion by such diverse species as obliterata, gigas and 

 nana, which have been in our lists under the confusing complex 

 known as Leptura Linn. To come at once to the point, the author 

 of the catalogue has not gone far enough; for, admitting obliterata 

 Hald., and allies as typical Strangalia, the species allied to gigas and 

 nana cannot properly be included, for they are of an entirely differ- 

 ent habitus. Not enough stress has been laid by European authors 

 upon the presence or absence of the remarkable sensitive pits or 

 areolae on the outer antennal joints, sometimes enormously de- 

 veloped in Ophistomis. I think that the possession of these areas 

 by Typocerus, renders it generically distinct from Strangalia ob- 

 literata, even without considering the different tarsal structure. 

 Species such as Lept. canadensis and aurocoma are considered by 

 Aurivillius to be true Leptura, while Iceta, impura and matthewsi 

 are placed in the genus Judolia Muls.; this distinction I cannot 

 follow very clearly. It seems, after all, that general facies or 

 habitus may be of more value in delimiting genera allied closely 

 to Leptura, than any single structural character. Our genera may 

 be outlined as follows: 



Antennae without conspicuous sensitive areas on the distal joints 2 



Antennae with sensitive areas, generally well impressed on the distal 

 joints 13 



