282 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



as new. It seems reasonable to assume that the habits of all the 

 species are similar, so the reader is referred to the subsequent dis- 

 cussion of the biology of the new species youngi. 



A few other general notes have been published concerning the 

 habits of profundus under the name chalybaeus LeConte. Leng (1887, 

 p. 212) published a note that he received specimens from Orange 

 County, Fla., collected Dec. 24, 1885, "late in the afternoon about 

 a quantity of horse and mule manure on a sandy road running through 

 high pine lands." Whether manure acted as an attractant is doubtful. 

 SchaefFer (1913, p. 169) mentions that he noted "G. chalybaeus" 

 attracted by stale urine. The only other early references to this 

 beetle that I have seen were an occasional reference to its seeming 

 rarity. Young and Hubbell have disproved this by collecting large 

 numbers of Peltotnipes in traps containing fermenting molasses sunk 

 in the ground. 



Specimens examined: 66 males, 60 females. 



FLORIDA: 66 males, 60 females. Croom (Hernando County), Enterprise, 

 Gainesville, Gilchrist County, Hernando County, Kissimmee, Lake City, 

 Orlando, Pensacola, Putnam County, Tampa, Tarpon Springs, Winter Park; 

 (11) January, (57) February, (5) March, (1) April, (1) May, (1) November. 



Peltotrupes profundus dubius, new subspecies 



Holotype: Male. Length 17.5 mm., greatest width 12 mm. 



Color of dorsum very dark blackish brown to black, suffused with 

 bluish iridescence. Tinged with green iridescence, most pronounced 

 on head, margins of elytra, and along elytral striae. Ventral surfaces 

 blackish, femora black mth traces of purplish iridescence. Head 

 with margined clypeus and canthus forming angles almost identical 

 to those of profundus. Margin of eye canthus usually slightly less 

 rounded (pi. 2, fig. Ic). Pronotum sharply and completely margined. 

 Anterior angles obtusely and gradually rounded (pi. 2, fig. 2c). 

 Sides of thorax more evenly arcuate than is usual in specimens of 

 profundus. Inner edge of the anterior margin with a small but 

 definite triangular tubercle projecting posteriorly at midline (pi. 2, 

 fig. 3c), interrupting the line of punctures across the pronotum 

 behind the margin (also present in profundus). Very few coarse 

 punctures on lateral portions of pronotum. Middle of lateral portion 

 of pronotum with only a vaguely indicated circular indentation. Fine 

 secondary punctures visible only laterally on pronotum, more so 

 posteriorly. 



First few elytral striae rather pronounced, with deep punctures, 

 appearing identical to profundus. Fifth stria appears as an irregular 

 double row of punctures in many places. The angle formed between 

 the expanded elytral margin and the normal convexity of the elytron 



