10 CLASSIFICATION OF THE SUBFAMILY ORYPHALINA. 
e4. Pronotum with sides usually straight and with basal angle acute to 
slightly rounded, lateral margins subacute toward 
base, apex with teeth. 
fi. Antennal club with one or two sutures on posterior ence abdominal 
sternites with sides nearly straight and acuminate 
from middle toward apex. | 
gi. Anterior tibia with ventral arearugose...36. Genus Dryocoetoides, page 52,| 
g2. Anterior tibia with ventral area smooth. | 
hi. Pronotum without apical serrations. 
11. Pronotal rugosities not extending to base 
j1. Apex of elytra emarginate.......- 37. Genus Coptoborus, page 53. 
42. Apex of elytra not emarginate. 
Anterior tibia broader toward middle; antennal club 
with two sutures on posterior face. 
38. Genus Coptodryas, page 54. : 
Anterior tibia broader toward outer apical angle. 
Antennal club with one or two sutures on posterior face. | 
39. Genus Euwallacea, page 54.4¢ 
42. Pronotal rugosities extending to base. 
Anterior tibia broader toward middle; club with one or two 
sutures on posterior face.40. Genus Ambrosiodmus, page 55. 
h2.. Pronotum with apical serrations. | 
73. Antennal club with two sutures on posterior face. 
41. Genus Theoborus, page 51. 
4. Antennal club with one suture on posterior face. 
Anterior tibia broader toward middle and obliquely rounded 
to mnmeranele- ce os eee 42. Genus Terminalinus, page 57.| 
Anterior tibia broader at outer apical angle and strongly | 
narrowed to inner apical angle. 
43. Genus Boroxylon, page 58. | 
jf2. Antennal club without sutures on posterior face; abdominal sternites | 
with sides rounded from pada to apex. | 
g3. Anterior tibia with ventral area rugose. .44. Genus Arixyleborus, page 59. 
g4. Anterior tibia with ventral area smooth. | 
h3. Anterior margin of pronotum without apical serrations; body | 
slender.. : .-45. Genus Xyleborus Eich. , page 60. | 
h4. Anterior margin : uae with apical serrations; hoy | 
stout. | 
Posterior tibia not strongly compressed or broadly dilated. } 
46. Genus Anisandrus Ferr., page 67. 
Posterior tibia strongly compressed and broadly dilated. | 
47. Genus Eccoptopterus Motsch. 
SECTION a6. | 
] 
Antennal funicle 4-jointed; club large, oval......-.-- 48. <Genus Cnestus Sampson.> | 
Genus COSMODERES KEichhoff. 
Antennal funicle 3-jointed, joint 3- narrow and obscure, joint 1 
very large and more than twice as long as the other two together; 
club compressed, oval, side margins rounded, three obscure, slightly | 
procurved sutures on anterior face, and two einem sutures | 
