92 MEMOIRS ON THE COLEOPTERA 



pygidium smooth, minutely, sparsely punctulate, glabrous; meso- 

 sternal tubercle small but strong; legs very stout, especially the 

 posterior, the tarsi long and notably stout. Length (cf) 20.5-24.0 

 mm.; width 12.5-14.3 mm. Utah (Green River) .. flavida Horn 



The upper ramus at the tip of the larger claw of the male tarsi, 

 in the last two species of the table is exceedingly small, and is 

 generally worn off, so that only an irregularity forming the base of 

 the ramus remains visible. In consobrina there seems to be an 

 unusual amount of variability, and of the two extreme males before 

 us, one is very stout, with the broad head strongly sculptured, and 

 the other more narrowly oval, with much reduced pro thorax; these 

 would seem to be at least subspecifically different, but it would 

 require large and carefully collected series to define such related 

 forms. Prof. Wickham indicates (Journ. N. Y. Ent. Soc., 1905, 

 p. 2) a form which he defines as a variety of lanigera; it is described 

 from a unique example in the collection of the late Mr. Chas. 

 Fuchs and may be outlined as follows: 



General characters as in lanigera but with the metallic lustre of the head 

 and pronotum more pronounced, the latter broadly brownish at the 

 sides; elytra ornamented by a common brown sutural stripe, ex- 

 tending the entire length, narrower at apex and extending along the 

 basal margins to the humeri, where it is recurved. Arizona (Pres- 

 cott) tau Wick. 



It is to be regretted that the author did not search more carefully 

 for additional characters, for if the type is in reality from central 

 Arizona, it is different specifically from lanigera without any doubt 

 whatever. However, the peculiar coloration will enable one to 

 recognize it if rediscovered. 



The subspecific form indicated above under the name obesa, 

 appears to be well differentiated from lanigera when viewed in 

 series, and is another instance of divergence in development of a 

 stem form on the opposite slopes of the Appalachian system. This 

 peculiarity has also been noticed by Mr. Leng and others. 



The resemblance of Cotalpa to the Brazilian Areoda is very 

 marked as to general habitus. 



Pocalta n. gen. 



The smaller and in part strongly metallic species, hitherto 

 regarded as a section of Cotalpa, have the upper surface of the body 



