NORTH AMERICAN BOSTRICHIDAE 79 



Body beneath very finely, densely, indistinctly granulose, sparsely 

 clothed with small, recumbent, scalelike, yellowish-white hairs. 



Female. — Differs from the male in not having an acute spine at the 

 apex of each elytron. 



Length 7-12 mm., width 2-4 mm. 



Type locality. — "America"; present location of type unknown to 

 writer. 



Distribution. — This species is common throughout the eastern part 

 of the United States and Canada. Specimens have been examined 

 from the District of Columbia, Florida, Georgia, Illinois, Iowa, 

 Kansas, Louisiana, Maryland, Michigan, Missouri, JNebraska, New 

 York, New Jersey, Ohio, Oklahoma, Pennsylvania, Tennessee, Texas, 

 Virginia, and West Virginia. 



Hosts. — The species is recorded as living in sycamore, hackberry, 

 oak, pecan, hickory, apple, beech, and elm. The larvae are usually 

 found under the dead bark and in the dead wood of its hosts, but speci- 

 mens received from Georgia were reported as boring in the dead 

 cambium of a live sycamore tree. 



This species was described by Weber (1801) from America without 

 giving any definite locality, and Say (1824) redescribed the same 

 species as Apate bicornis, giving above the mouth of the Ohio River 

 as the type locality, and citing this name from the Melsheimer 

 Catalogue. 



LlCHENOPHANES ARMIGER (LeConte) 



Bostrichus armiger LeConte, 1866, Smithsn. Inst. Misc. Collect. 167: 100-101; 



Horn, 1878, Amer. Phil. Soc. Proc. 17: 545, 546; Casey, 1898, N. Y. Ent. Soc. 



Jour. 6 : 71-72 ; Blatchley, 1910, Coleoptera of Indiana, pp. 888, 889. 

 Lichenophanes armiger Lesne, 1899, Soc. Ent. de France Ann. (1898) 67: 462, 



480-481, fig. 82; 1938, in Junk (pub.), Coleopt. Cat., pt. 161, p. 33; Brimley, 



1938, Insects of North Carolina, p. 198; Anderson, 1939, Wash. Acad. Sci. 



Jour. 29 (9) : 390, figs. 27, 28, 31, 33 (larvae). 



Male. — Elongate, cylindrical, dark reddish brown, palpi, antennae, 

 and tarsi slightly paler; dorsal surface of body irregularly clothed 

 with yellowish-white, scalelike hairs, which are at least three times as 

 long as wide. 



Head much narrower than pronotum, more or less rugose, sparsely, 

 finely tuberculose; clypeus slightly convex; clypeal suture distinct; 

 labrum densely ciliate with long, yellow hairs in front. Antenna 

 10-segmented ; third segment slightly elongate, fourth to seventh 

 round or slightly transverse. 



Pronotum quadrate, strongly convex, widest at middle, strongly de- 

 flexed on apical half, with two unciform processes in front, without 

 depressions or distinct gibbosities in front of scutellum ; sides broadly 

 rounded, more strongly converging anteriorly; posterior angles rec- 

 tangular ; surface with a narrow, longitudinal, median groove on basal 

 half, rather densely, coarsely tuberculose, the tubercles smooth and 

 round basally, becoming slightly broader and more rasplike on an- 

 terior half. 



Elytra at base slightly wider than pronotum at middle, tuberculate 

 at base, each elytron with a single crenulate costa, which is vaguely 

 indicated, frequently interrupted, sometimes only indicated on basal 

 fourth ; sides parallel, conjointly angularly emarginate at apices, with 

 a small acute spine on each side of emargination ; surface coarsely, 



