150 HICKORY. TRUNK — TIGER CERAMBYX. THE BEETLE. 



are more or less confluent with each other. The head is retractile within and 

 .but half as broad as the second segment, and is coal black except at its base, 

 the black being edged posteriorly with chesnut brown. The upper lip or labrum 

 is transverse oval, rather broader towards its base, honey yellow, and covered 

 with short yellow hairs which incline forwards. The upper jaws or mandibles 

 are robust, with an angular obtuse tooth-like projection near the middle of their 

 inner sides, their tips being simple and rather blunt. The antenna; are minute 

 conical two-jointed points projecting outwards at the base of the mandibles and 

 distant from the base of the head. The feelers are thrice the size of the antennae, 

 conical, three-jointed and of a chesnut brown color; the lobe of the lower jaws 

 pr maxilla3 projects at the inner base of the feelers and is more than half their 

 length and clothed with short dense pubescence. The feelers of the lower lip 

 or the labial palpi are minute but perceptible. The throat is whitish, the suture 

 at the base of the oral organs black edged posteriorly with chestnut brown. The 

 apical segment of the body is divided into two parts by a transverse impressed 

 line, and might, as in many other larvae, be counted as two segments, the last 

 one being much more narrow and short in this insect. 



, The celebrated Swedish entomologist, Baron De Geer, long ago 

 published a description and k figure of this beetle in the fifth volume 

 of his Memoires on Insects, page 113, under the name of Cerambyx 

 tigrinus, or the Tiger Cerambyx, a name suggested perhaps from 

 its size and colors. It has lately been described by Rev. IX 

 Zeigler, and by Prof. Haldeman, under the name of Monokammus 

 tomentosus, or the Wooly Cerambyx, which name, however, must 

 give place to that which was previously bestowed. Some of the 

 descriptions that have been published have evidently been drawn 

 from imperfect specimens, denuded of their pubescence in places. 



The medium length of this beetle is about one inch, though, like most other 

 Long horned beetles the two sexes differ much in size, the males being often 

 only 0.85, whilst the females are 1.15. The ground color is brown, sometimes 

 tinged with reddish or on the elytra with pale yellow; and the surface is 

 covered beneath and for the most part above with fine short appressed hairs of 

 an ashy or a tawny-yellowish white color. The head is punctured, at least, 

 on its summit, and has an impressed line in its middle. The mouth is of a 

 honey-yellow color above and beneath, the upper lip being hairy and blackish 

 except at its anterior edge, and the mandibles are deep black, their bases 

 brown. In the notch of the eyes is an elevation on which the antennae are in- 

 serted. These are rather shorter than the body, eleven-jointed, the second 

 joint very short and more broad than long; the basal joint is double the thick- 

 ness and but half the length of the third joint, which, with those that succeed 

 it are about equal in length and gradually diminish in thickness. The two 

 basal joints are brown, all the others whitish or pale yellow and stained with 

 brown at their tips. The thorax is everywhere covered with short appressed 

 hairs, which are more dense beneath, and has on each side in the middle, a 

 conical erect spine rounded at its apex. The scutel is brown, its apical half 

 covered with whitish or light yellow hairs. The elytra are covered with simi- 



