NO. 1982. FOSSIL COLEOPTERA FROM FLORISSANT— WICKHAM. 287 



I can not see that this is related to any of the Staphylinidae de- 

 scribed by Scudder. Perhaps the most striking feature is the small 

 elytra which remind one of Sunius in the Psederini. I believe that 

 the shiape of the prothorax is correctly given in the description, and 

 that the lobate structure at the base of this segment is a displaced 

 piece, though in some lights it appears continuous with the thoracic 

 disk, and in that event the prothorax would be broader toward the 

 base than in front of the middle. 



The insect is named for Col. Thomas L. Casey, of Washington, 

 District of Columbia 



ALEO(^HAROPSIS SECUNDA, new species. 



Plate 22, figs. 5, 6. 



Less elongate than A. caseyi. Head, as preserved, a little longer 

 than broad. Antenna short, reaching slightly beyond the pro- 

 thoracic apex, first joint large, the third hardly longer than the 

 second, remainder, to the ninth, more or less strongly transverse, 

 extreme apex indistinct. Prothoracic width equal to about one and 

 one-haK times the length, form somewhat distorted so that the shape 

 of the sides is not determinable. Elytra, conjomtly, broader than 

 the prothorax, which they distinctly exceed in length, apices trun- 

 cate, the sides subparallel. Abdomen, at base, about as broad as 

 the elytral apices, tapering thence to the tip. Legs moderate or 

 rather short. Sculpture not visible at any pomt, except on the 

 abdomen, where it consists of fine punctures giving rise to rather 

 long moderately close-set hairs. Like A. caseyi, this insect has a 

 long seta (not shown in the figure) inside of each anterior prothoracic 

 angle. Length, to tip of middle abdominal projection, 9.90 mm. 

 Width, across elytra, 2.25 mm. 



Type.— C&t. No. 59635, U.S.N.M. 



One specimen. Compared with A. caseyi, this insect is readily 

 known by the relatively longer elytra. The difference m abdominal 

 appearance may be due to accidental expansion or contraction. This 

 one shows the last segment to be apparently tridentate, but under 

 high power the middle process is seen to be double. It can not be 

 Tachinus somTnatus (to which, at first sight, it has some resemblance) 

 because of the difference in antennal structure. 



Genus QUEDIUS Stephens. 



. QUEDIUS CHAMBERLINI Scudder. 



A single example is presumed to belong here. In view of the fact 

 that the original figure of this species was not made from the type 

 and that the two later figures ^ differ in thoracic proportions to such 

 an extent as to preclude the possibility of their representing a single 

 species, the identification is open to some doubt. 



Cat. No. 59647, U.S.N.M. 



I Mon. U. S. Geol. Surv., vol. 40, pi. 5, figs. 10 and H. 



