116 MISC. PUBLICATION 6 9 8, U. S. DEPT. OF AGRICULTURE 



This is the only species- of Bostrichidae having the inner margin of 

 the metasternal episternum arcuate. 



Genus XYLOPERTHELLA, New Name 



Xylopertha Lesne, 1901, Soc. Ent. de France Ann. (1900) 69: 477, 527-536; 1901, 

 Abeille 30 : 87, 97-99, pi. 2, figs. 45, 46 ; Jakobson, 1913, Kafer Russland, pt. 10, 

 pp. 804, 806 (part) ; Lesne, 1924, Bostry chides de l'Afrique Tropicale Frangaise, 

 pp. 209, 217-226 ; 1938, in Junk (pub.), Coleopt. Cat, pt. 161, pp. 62-63. 



Head deeply inserted in prothorax, not visible from above ; elypeus 

 strongly transverse, shallowly, arcuately emarginate in front, obtusely 

 angulated on each side at lateral margin of labrum; labrum large, 

 transverse, broadly rounded or subtruncate, and densely ciliate with 

 long golden-yellow hairs in front ; mandibles attenuate toward apices ; 

 eyes oval, globose, strongly projecting. Antenna 10-segmented ; first 

 and second segments robust, first elongate, twice as long as second, 

 which is oval; third to seventh segments short, compact, transverse 

 (except third), united subequal in length to first segment of club; last 

 three segments forming a large, loose, compressed club, densely clothed 

 with short, recumbent, yellowish hairs, but without distinct sensory 

 depressions, eighth and ninth subtriangular, slightly transverse, and 

 tenth oval, slightly longer than ninth. Pronotum slightly convex, 

 arcuately emarginate in front, truncate at base, dentate anteriorly, not 

 transversely depressed behind anterior margin; sides not margined. 

 Scutellum small, quadrate. Elytra strongly convex, with or without 

 tubercles on anterior margin of apical declivity. Legs rather long, 

 subequal in length ; tibiae expanded toward apices, each with a large, 

 arcuate spine at apex, dentate on exterior margins; posterior tarsi as 

 long as, or longer than tibiae, apical segment of each shorter than 

 preceding four segments united. Anterior coxae contiguous. Middle 

 coxae narrowly separated. Intercoxal process of abdomen lamellate. 

 Body elongate, cylindrical. 



Genotype. — Bostrichus piceus Olivier. (Present designation.) 

 Lesne (1901) restricted the use of Xylopertha for three species, 

 crinitarsis Imhoff, picea Olivier, and scutula new species, all from 

 Africa. None of these species were originally included in Xylopertha, 

 and he probably overlooked the designation of sinuata Fabricius as the 

 type of Xylopertha by Gorham. 9 Since Xylopertha cannot be used 

 for the above species, I propose Xyloperthella for Xylopertha Lesne 

 (1901), not Xylopertha Guerin-Meneville (1845). 



Xyloperthella crinitarsis (Imhoff) 



Xylopertha (?) crinitarsis Irnhoff, 1843, Verb. Naturf. Ges. Basel 5: 177 (publica- 

 tion not seen). 



Xylopertha crinitarsis Lesne, 1901, Soc. Ent. de France Ann. (1900) 69: 528, 

 534-535, figs. 330, 332 ; 1924, Bostrycbides de l'Afrique Tropicale Frangaise, pp. 

 219, 225-226, figs. 5, 24, 136, 144, 145; 1938, in Junk (pub.), Coleopt. Cat, pt. 

 161, p. 62. 



Sinoxylon pubescens Murray, 1867, Ann. and Mag. Nat. Hist. (ser. 3) 20: 93-94. 



Xylopertha pubescens Lesne, 1896, Soc. Ent. de France Bui., p. 335. 



Male. — Dark reddish brown, with bases of elytra and pronotum 

 slightly paler, sometimes entirely reddish brown, the antenna and 

 palpi yellowish brown. 



9 Gorham, H. S. halacodermata. Biol. Centr.-Amer., Coleopt., v. 3, pt. 2, p. 

 215, 1833. 



