456 bulletin: museum of comparative zoology. 



Aphodius praeemptor Wickham. 



Several specimens are contained in the collection, No. 2,541-2,546 

 M. C. Z. (No. 433, 494, 8,523 and 9,616, 13,605 and 13,666 S. H. 

 Scudder Coll.). These agree well with the type. It is probable that 

 No. 2,547, 2,548 M. C. Z. (No. 2,328, 7,785 S. H. Scudder Coll.), 

 also belong here. 



Aphodius senex, sp. nov. 

 Plate 6, fig. 8. 



Form moderately stout, similar to that of the modern A. fimetarius. 

 Clypeus broadly rounded, not emarginate anteriorly. Head moder- 

 ately coarsely and confluently but not strongly punctate at sides, the 

 sculpture of the front either weak or not defined. Prothorax about one 

 and three fifths times as broad as long, sides almost regularly arcuate, 

 a fairly well-defined median line, punctuation not close, but the condi- 

 tion of the stone is such that a sparse punctuation would not be dis- 

 tinguishable. Scutellum short, punctured closely and confluently 

 somewhat like the sides of the head. Elytra with broad distinct 

 striae in which the sides are deeper than the middle, giving each stria 

 a duplicate appearance, strial punctures visible, but weak. Legs 

 wanting except one defective fore tibia which is omitted from the 

 drawing and shows nothing beyond the fact that it is toothed. Length, 



8 mm. 



Described from a single specimen. 



Type.— No. 2,550 M. C. Z. Florissant, Col. (No. 9,432 S. H. 

 Scudder Coll.). 



Differs from all the other Florissant Aphodii except A.florissantensis 

 by the duplicate striae and from that species in being very much larger. 

 In size it is surpassed only by A. laminicola, which has simple striae. 



Aphodius laminicola Wickham, 



This large species seems to have been not at all uncommon. It is 

 represented by seven specimens, one with counterpart. No. 2,559- 

 2,566 M.C.Z. (No. 6,118, 7,735, 8,028 and 8,474, 8,490, 11,287, 

 11,786, 14,403 S. H. Scudder Coll.). 



