H. C FALL. 



107 



median impressed line of the metasternura is abbreviated or entirely 

 wanting. In the second group— Calyptobium Aube— the sixth ven- 

 tral in our three species is, in every specimen examined, distinctly 

 and apparently normally exposed ; the first ventral is as long as the 

 three following combined, and the metasternum bears an entire 

 median impressed line. 



Two species— singularis and pacificus— have stood on our lists for 

 many years ; of the former I have seen no native specimens and its 

 occurrence with us is certainly open to doubt. The only localities 

 thus far named are New York and Yuma. The former is based 

 upon a specimen in the LeConte collection, which, on examination, 

 I find to be kuuzei, and as this species also occurs in California, the 

 Yuma specimens are doubtless the same thing. As singularis, how- 

 ever, is a cosmopolitan species, it will quite surely be found here 

 sooner or later, and it will therefore be described and included in 

 the table. Our species separate easily in the following manner : 



Antennae 9-jointed in the %, 10-jointed in the 9; pronotum longitudinally 

 bistriate at base, hind angles not foveate. 



Subgenus Holoparaniecus. 



Eyes small, distant by about their own diameter from the antennas ; pronotum 

 without discal fovea; metasternum without median impressed line. 

 Form broad, elytra convex, metasternum longer than the first ventral seg- 

 ment, first joint of autennal club longer than wide ragusa?. 



Form more slender, elytra less convex, metasternum scarcely as long as the 

 first ventral segment, first joint of autennal club not longer than 



wide singularis. 



Eyes larger, distant by about half their diameter from the antennae ; pronotum 

 with small discal fovea; metasternum with median impressed line in 



apical half. 



• kuuzei. 



Antennae 11-jointed in both sexes; pronotum not bistriate at base, the base more 

 or less broadly impressed, the hind angles foveate. 



Subgenus Calyptobium. 



Hind angles of prothorax not carinate. 



Tempora nearly as long as the eyes, surface feebly shining pacificus. 



Tempora very short, surface shining floridanus. 



Hind angles of prothorax carinate caiilaruni. 



H. ragusa? Reitt — Quite robust, testaceous, finely but distinctly punctate 

 throughout, the punctures of the pronotum and presternum being especially 

 strong and close for the genus. Antennae with the intermediate joints scarcely 

 as wide as long, the first joint of club obconic, longer than wide, and much 

 longer than the terminal joint. Eyes small, distant by about their own diameter 

 from the antennae, the tempora very short. Prothorax wider than long, widest a 

 little behind the apex, sides rounded in front, thence oblique and scarcely at all 

 sinuate to the hind angles, which are slightly obtuse; disk moderately convex 



TRANS. AM. ENT. SOC. XXVI. NOVEMBER, 1899. 



