1882.] '^'^'^ [Jayne. 



P. cylindricum Ivby. Oblong, ova], piceous, shining, sparsely clothed 

 with moderately short, semi-erect, easily removed, cinereous pubescence. 

 Elytra uniformly piceous or marked by two transverse rufous bands. 

 Head coarsely and densely punctate, pubescence sparse. Antennae rufous. 

 Thorax very densely and coarsely punctate, moderately densely pubescent, 

 especially at sides. Elytra less densely and coarsely punctate, either black 

 and uniformly pubescent or marked by two piceous bands at apical and 

 basal third, to which the pubescence is more closely adherent. Body be- 

 neath piceous, coarsely punctate, moderately densely pubescent. Legs 

 piceous. Length .13-.16 inch ; 3.2-4 mm. 



Male. First and second joints of antennae large, sub-equal, 3-8 very 

 small, 9-11 forming a club which is longer than all the preceding joints 

 together, the first nearly as large as the second, and the last longer than 

 the other two together, and pointed at tip. (Fig. 37.) 



Female. Club of antennae only half as long as the preceding joints 

 together, last joint not much larger than second, obtusely pointed at tip. 

 (Fig. 38.) 



Occurs from Hudson Bay Territory to California. 



Certain specimens from California, in Dr. LeConte's collections, differ 

 somewhat in the ornamentation of the elytra. Dr. Horn describes them 

 as follows : 



Specimen a. Uniformly piceous, pubescence normal, slightly denser at 

 the sides of the thorax (angularis Mann). 



Specimen h. Similar to a, but with the pubescence adhering more 

 closely, and forming a very indistinct sinuous band at basal and apical 

 third. 



Specimen c. Elytra with sinuous, transverse, rufo-piceous bands at 

 apical and basal third, to which the pubescence is very closely adherent, 

 causing the elytra to be conspicuously marked. 



This species is easily recognized by the uniform color of the pubescence 

 and by the antennal club. 



P. falsum Horn. Form, color, and ornamentation as in cylindricum, 

 variety c. The pubescence of the elytra is bicolored, composed of pale- 

 brownish and grayish-white hairs intermixed, tlie former forming a 

 narrow, transverse band in front of the rufous bands of the elyti-a. 

 Length .14 inch ; 3i mm. 



Male. Club of antennae slightly longer than all the preceding joints 

 together, first joint extremely short, but nearly as wide as the second, ter- 

 minal joint more than twice as long as the two preceding together, and 

 pointed at tip. (Fig. 41.) 



Female. Club of antennae not longer than the preceding joints taken 

 together, first joint much shorter than the second, terminal joint slightlj^ 

 longer than the first two uniled, and but little longer than wide, oval at 

 tip. (Fig. 42.) 



