TRIBE IV. SCOLYTIXI. 



587 



Described from Illinois. Occurs from Michigan to Florida and 

 Texas. Food plants, Toxylon pomifennu L., Liqnidam~bar, Smi- 

 lax-, Bumelia and Hicoria (pith of twigs). (Swaine.) Cut out 

 of terminal twigs of oak, May 26, Cape May C. H., New Jersey. 

 ( Wenzel. ) 



Tribe III. CAMPTOCERINI. 

 V. LOGANIUS Chapuis, I860. (Gr., "chaff.") 



908 (11,250). LOGAXIUS FICUS Schwarz, Proc. Ent. Soc. Wash., Ill, 1894, 

 44. 



Cylindrical. Piceous, shining, nearly glabrous above, antennas pale, 

 legs reddish-brown or paler. Head concave, finely punc- 

 tulate, each puncture bearing a yellowish hair; eyes 

 strongly transverse. Antennal scape longer than 7-jointed 

 funicle, each joint of which bears a very long, pale seta; 

 club large, strongly compressed, oblong, pubescent on both 

 sides with three greatly curved sutures. Thorax slightly 

 longer than wide, lateral marginal line acute and entire, 

 not pubescent, sparsely punctate. Elytra at base as wide 

 as that of thorax, slightly longer than thorax, glabrous, a 

 few short seriate bristles on sides and declivity, regular 

 rows of coarse punctures in front; declivity simple, con- 

 Lo- vex - stria? deeply impressed; interstices convex, each with 

 a row o f tubercles. Beneath sparsely pubescent. Legs 



gentine species, short and stout, femora and tibia? compressed, the latter 

 dorn ) &ge n t denticulate at outer margin; front tibiae equally wide 



throughout, outer apical angle prolonged into a long uncus bent 'inwardly; 



tarsi slender, as long as tibiae, third joint hardly bilobed. Length 2.1 



2.3 mm. 



Key West, Fla., April, under the bark of Ficus a urea L. The 

 colonies found by Schwarz were so crowded that nothing could 

 be said of the nature of the galleries. 



Tribe IV. SCOLYTINI. 

 This tribe contains one genus of six species. 



VI. SCOLYTUS Geoff roy, 1872. (Gr., "truncate. 1 ') 



The species of *SVofy/f//,<? are usually known by the peculiar 



conformation of the ventral 

 surface, it being flattened or 

 concave and obliquely ascend- 



/ r 'Sir V- f>r^'"^^' \j 



L- v ^t^ ing from the posterior end of 



the first segment to the fifth. 

 ' They have the side margin of 



Fig. 14.;. Middle tibia of Scolytns qnadri- . ,i'Mtli<i- v <1 isif iii<.t U- 

 spinosns Say. (After Felt.) plOtllOluX QlSTmCtlJ 



