136 SUBFAMILY IX. OTIORHYNCHIN.E. 



bb. Men turn smaller. ( PROMECOPIX.E Pierce). 



e. Elytra broadly oval, scutellum small; metasternum short. 



AEACANTHUS, p. 133. 



ee. Elytra oblong, broader at base than thorax, scutellum transverse; 

 metasternum moderately long. EUDIAGOGTJS, p. 134. 



aa. Ocular lobes absent; eyes rounded or shortly oval and always free. 

 f. Scrobes linear, directed beneath. 



g. Thorax with ocular vibrissae, or if without them, with anterior 

 coxae narrowly separated. ( TAXYMECIX^E Pierce). 



1\. Ocular vibrissae always present; front coxae contiguous. 



i. Thorax feebly lobed behind the eyes and bisinuate at base; eyes 

 transversely oval, pointed beneath. PACHX^US, p. 117. 



ii. Thorax not lobed, base truncate; eyes round or longitudi- 

 nally oval. TANYJIECUS, p. 118. 

 Till. Ocular vibrissae frequently lacking; front coxae separated. 



PAXDELETEIUS, p. 119. 



gg. Thorax without ocular vibrissae. (PSALLIDIIX.E Pierce). 



;'. Elytra wider than thorax at base; humeri angulate, often prom- 

 inent. 

 A-. Claws free. 



/. Genae emarginate behind the mandibles. COMPSUS, p. 122. 

 II. Gena? not or hardly emarginate. LACHXOPUS, p. 128. 



Jck. Claws connate. 



m. Beak with nasal plate small and inconspicuous. 



POLYDRUSUS, p. 129. 



mm. Beak very short and massive, with nasal plate large, as wide 



as beak and distinctly margined. SCYTHROPUS, p. 131. 



;';'. Elytra not wider than thorax, emarginate or truncate at base; 



humeri absent or rounded, wings absent or rudimentary. 

 n. The three intermediate segments of the abdomen equal, sep- 

 arated by straight sutures.* HORMORUS, p. 100. 

 nn. Abdominal segments unequal, separated from the first by an 



arcuate or angulate suture. 

 o. Antennae scaly or coarsely pubescent; body beneath densely 



scaly, 

 p. Claws connate. 



q. Scrobes curved downward and directed toward the con- 

 striction between the head and the beak. 



SCIAPHILUS, p. 132. 

 qq. Scrobes directed toward or just beneath the eyes. 



STROPHOSOMA, p. 132. 

 pp. Claws free. 



r. Side pieces of mesosternum very unequal, the epister- 

 num larger and attaining the elytral margin. 



EPICURUS, p. 99. 



rr. Side pieces of mesosternum diagonally divided and equal 

 or very nearly so, the episternum distant from ely- 

 tral margin. 



s. Tenth elytral stria entire. PAXTOMORUS, p. 124. 



ss. Tenth elytral stria confluent with the ninth. 



ARTIPUS, p. 123. 



*Not confirmed by our observation. 



