( 280 ) 
Bostrichus bidentatus, HErBsr, Fuesl. Arch., 1785, IV, 1, p. 24, tab. 20, 
tig. 10 (Q); Col. V, p. 109, 7, tab. 48, fig. 7, f. 
Scolytus bidentatus, OLiv., Ent., IV, 75, 10, 15, tab. 2, fig. 15, a, b; ibid. 
4, 18, 10, 15, tab. 2, fig. 15, a, b. 
Bostrichus bidens, FABr., Syst. eleut., Il, 389, 22; Ent. syst. I, 2, p. 568, 24. 
— Payx., Fn. Suec., IT, p. 148, 5 (Q). — Pawz., Fn. Germ., 1839, tab. 21. — 
GyLL., Ins. Suec., U, p. 557 (Q), var b (©). — Durr., Fn. Aust., I, p. 95, 8. 
— Rarzes., Forslins., 1, 1837, p. 159; 1839, p. 192, tab. 12, fig. 11, 12. — 
HarTiG, Conv. Leæ., p. 109, 7. — * Perris, Ann. Fr., 1856, p. 187, tab. 5, 
fig. 307-508. — Zerr., Fa. Lap., 1, p. 546, 5. — * Bacu, Kaef., Il, p. 125 et 
129, 8. — Does\., Zool., 1862, Il, p. 177. — Noerou., Slett. ent. Zeit., 1848, 
p. 258, tab. 11. 
Pityophthorus bidens, FERRARI, Borkenk., 1867, p. 35. — REDTENS., Fn. 
Aust., ed. 5, Il, p. 579. — Taows., Scand. Col., VII, p. 567, 8 (Tomicus). 
Bostrichus chalcographus, PAyx. Fn. Suec., UT, p. 147 (). 
Bostrichus bispinus, Guyon, Zool., 1855, p. 485 (FERRARI, Borkenk., p. 55, 
nola 4). 
(?) Xyleborus plagiatus, LECONTE, Syn. Scol., 1868, app., p. 161, 14. 
Var. 6. Elytris utrinque dentibus duobus, superno minore prope 
suluram. 
Var. y. Elytris utrinque dentibus duobus, infero minore post 
medium declivitalis. 
Bostrichus quadridens, HARTIG, Conv. Lex., 1854, p. 109. — RATZEBURG, 
Forstins., Nachtr., p. 41. — NozroL., Slett. ent. Zeil., 1848, p. 259. 
Var. d. Elytris apice utrinque dentibus tribus, medio hamato. 
Bostrichus calcaratus., * DEs., Cat., 1837, p. 532. 
Var.? &. Major, elytris profundius punctato-striatis, stria suturali 
non impressa, apice dentibus 5 validis. 
Var. y. Mas : Fronte medio profunde perforata. 
Bostrichus trepanatus, NOERDL., Stetl. ent. Zeit., 1848, p. 259. 
Antecedenti similis et affinis, praecipue in maribus sed magis 
pubescens, elytris profundius densius punetato-striatis a basi 
usque apicem, in feminis apice determinate excavato-retuso 
aliter dentato, tibiis angustioribus, fronte in utroque sexu (ple- 
rumque) non impressa. Caput leviter convexum, nigrum, subni- 
tidum, in masculis subtiliter punetulatum, supra os plaga 
subtriangulari opaca tomentosa, in feminis crebre granulate 
