644 FAMILY IV. SCOLYTIDJE. 



lona, N. J., May 7, entering dying pine. (Wcnzcl.) Callair 

 der, Ont., July 19. Eastern United States and Canada to Florida 

 and Texas. Infests pine, the galleries being short, parallel and at 

 right angles to main gallery- Sclnvarz found no males, in 150 

 specimens. The male probably never leaves the burrow. 



1039 (9061). GNATHOTKICHUS ASPERULUS Lee., 1868, 155. 



Slender, cylindrical. Brownish-black, shining, nearly glabrous; an- 

 tennas and feet yellow. Head flat, feebly punctulate. Prothorax one-half 

 longer than wide, feebly narrowed and rounded on the sides from base, 

 strongly rounded at tip, very rough and slightly pubescent before the 

 middle, but almost entirely smooth behind. Elytra scarcely punctulate, 

 posterior declivity with a few hairs, almost uniformly convex, with a very 

 feeble subsutural furrow. Length 1.5 mm. 



Described from Virginia. Known also from Washington, D. 

 C., on Pi ii us rircfiniana Mill. 



IV. XYLOTERUS* Erichs., 1836. (Or., "wood" -f "monster.") 



Robust, cylindrical species with declivity of elytra oblique, 

 not excavated nor toothed; eyes completely divided; club of an- 

 tenmp oval, solid, pubescent on both sides, not annnlated, the 

 basal shining corneous part extending forward in a narrow band: 

 fnnicle with first joint large, stont, the remaining joints not very 

 distinctly separated; head in male deeply concave, the prothorax 

 less strongly asperate than in female. As in Monarthrum, the 

 males accompany the females; the young are raised in separate 

 cradles, each female attending her own brood, feeding them with 

 a yellowish ambrosia grown in beds near the cradles. The month 

 of each cradle is constantly kept filled with a ping of the food 

 fnngns. This consists of upright sticks which do not branch and 

 are capable of being broken np into bead-like masses without 

 losing their vegetative powers. Although the color is yellow, the 

 galleries are stained black. 



SYNOPSIS OF SPECIES OF XYLOTERUS. 



a. Elytra with ill defined distant rows of punctures; intervals equally 

 strongly punctured; pubescence erect, abundant. 1040. POLITUS. 

 aa. Elytra with well defined striae of punctures, intervals nearly smooth. 

 I). Prothorax finely and sparsely punctured at sides towards base. 

 i\ Larger, 4.5 mm.; less punctured at base of thorax. 



1041. RETUSTJS. 

 cf. Smaller, 3.5 mm.; more punctured at base of thorax. 



1042. LINEATCJS. 



*This name is preferred by Hopkins to Trypodendron Steph., 111. Brit. Ent., Ill, 

 1830, 353, used by Swaine for the following species: pplitits Sa}', rctusus Lee., scabri- 

 collis Lee., Hncatiis Oliv. 



