378 SUBFAMILY X. CURCULIOX I NM-:. 



66. Tarsi with claws connate or single. 

 o. Claws two, connate in basal half. 



p. Beak long, slender, antenna? inserted behind its middle; body 



subglabrous and with remotely scattered white scales; elytral 



stria? fine, coarsely punctate; prosternum flat between the 



coxa?. XXVI. ZYGOBARIS. 



pp. Beak short, stout, antennae inserted beyond its middle. 



q. Prosternum flat; body glabrous with minute hairs in the re- 

 mote punctures. XXVII. ZYGOBARINTS. 

 qq. Prosternum sulcate; body scaly. 



r. Basal joint of funicle moderate, not longer than the next 

 three united; elytra with large, remotely scattered white 

 scales; length less than 2.5 mm. XXVIII. CATAPASTUS. 

 rr. Basal joint longer than the next four united; elytra with- 

 out scattered single scales; length more than 3 mm. 



XXIX. BARINUS. 

 oo. Claws single; body very slender, subcylindrical. 



XXX. BARILEPTON. 

 aa. Body with erect bristles, intermixed with the dense covering of 



scales; mandibles almost vertical. 



.9. Beak one-half to three-fourths the length of the body, very slender; 

 erect seta? spiniform and conspicuous. XXXI. EUNYSSOBIA. 



ss. Beak shorter, but slightly longer than head and thorax, without 

 basal constriction; erect bristles much shorter. 



XXXII. PLOCAMITS. 



XIII. CfiXTRixus Schon., 1S20. (Or., "central.") 



A large genus of small or medium sized, rhomboidal or rhom- 

 hoid-oval, more or less scaly species having the mandibles elon- 

 gate, prominent, not crossed in repose, their inner edges never 

 toothed; beak usually cylindrical, long and slender; thorax nar- 

 rowed and more or less constricted in front; elytra wider than 

 thorax, narrowed toward apex ; femora unarmed ; tarsal claws 

 free, divergent. 



KEY TO EASTERN SPECIES OF CEXTRIXUS. 



o. Male with an erect or oblique process before each of the front coxae; 



scape not reaching the eye. 

 6. Front coxa? narrowly separated; body robust. 



c. Beak thick, the antenna? inserted near or beyond its middle, in 

 male, behind middle, in female; thorax strongly tubulate at 

 apex; length 4 or more mm. 



d. Elytral intervals wide and flat, the alternate ones more densely 

 clothed with white pubescence, giving them a striped appear- 

 ance; punctures of thorax very small, dense and tending 

 to coalesce lengthwise. 574. L.EVIROSTRIS. 



dd. Elytral intervals narrower, sprinkled with scattered broad, 

 oval white scales; punctures of thorax coarse, rather sparse 



