282 



REVISION" OF THE TENEBRIONIDiS OF AMERICA, 



M. punctata, Sol., Ann. Boo. Entom. V., p. 475; pi. 11, fig. 22. 



For several specimens of this species I must acknowledge my indebtedness to Mr. 

 Win. M. Gabb, by whom they were collected on the peninsula of Lower California. 

 Length .62— .82 inch. 



M. intequalis, Leo., Ann. Lye. V., p. 129. Laoord. Gen., pi. 51, fig. 5. Punctieollis, Lee., (loe. cit.) 



I unite the two species of Dr. Leconte, there being no characters on which to separate 

 them. The latter form is, however, smoother, the rugosities of the elytra less defined, a 

 character of but little value, as may be seen by examining other genera of the family 

 (Phheodcs and Centrioptera), where age and locality cause the same species to vary 

 greatly in this respect. M. inacqualis is not rare at San Diego, and occurs at Tejon and 

 various places along the coast range. Punctieollis is from Warner's ranchc, near the bor- 

 ders of the Colorado desert. 



Length .60— .65 inch. 



M. sulcipennis, Lee., Journ. Acad., Series II, vol. IV, p. 18. 



Differs notably from the preceding species, and might Avith great propriety, according 

 to the hitherto received rules, form a new genus. I prefer, however, to retain it in the 

 genus in which it was placed by its author. The hind angles of the elytra are acute and 

 overlap the rectangular humeral angles of the elytra. Its form is consequently near that 

 of Aslda opaca. From Llano Estacado, Texas. 



Length .60 inch. 



ASIDA, Lair. 



Asida, Latreillc, Hist. Nat. Crust, et Ins. X., p. 209. 

 Pelecyphorus, Sol., Ann. Soc. Entom. V., p. 407. 

 Euschides, Lee, Ann. Lye. V., p. 127. 

 Pliilolithus, Lac, Genera des Coleop. V., 157. * 



Under the older name of Latreillc, it is proposed to assemble all the species of Asidini 

 in which the trochantin of the middle coxa} is plainly visible, the antennae not received 

 in thoracic grooves, and eleven-jointed. 



After a very careful study of our own and all the foreign species accessible to me, the 

 differences between the genera as given by Lacorctaire and Solier, have vanished com- 

 pletely, so that while we have among typical Asida; a very distinct prolongation of the ex- 

 ternal apical angle of 'the anterior tibia;, and among the species referred to Philolithus a 

 total want of such prolongation, numerous intermediate forms occur in our fauna to which 

 it would be difficult to assign a place in either genus. Instead, therefore, of erecting 

 these into genera as numerous as the species, (as has been too often done already) the 

 more conservative plan of uniting all with one genus has been pursued. The presence or 

 absence of prominent hind thoracic angles lias also had undue importance assigned to it. 



