IS&I.] 121 



and ninth segments are smooth above and below. The anterior segments 

 are the shortest; the following gradually increase in length; the ninth is 

 the longest; its anal tubercle is small, divided into three lobes by a Y- 

 shaped furrow ; a few hairs are insei'ted around it. Number and position 

 of the abdominal stigmata are normal. 



Dr. Horn, to whom I am indebted for the communication of these larvaj, 

 found them in different kinds of decaying wood, especially beech wood, 

 which they seem to prefer. (See Proc. Entom. Soc. Phila. I, p. 73.) 



ARHOPALUS PICTUS Drury. (robinise Forst) 

 (Plate ]. Fig. 7.) 



Larva 0.6—0.7 long, somewhat flattened-club-shaped, the thoracic seg- 

 ments beins: considerablv broader than the abdominal ones, but at the 

 same time distinctly flattened above and below. 



Head, when extracted from the thorax, appears almost circular and nar- 

 rower than the prothorax ; in its usual position, it is inserted in the latter, 

 so that, besides the mouth, a very narrow portion only is visible. The ex- 

 serted portion is brownish, the remainder yellow. Antennse short, appai'- 

 ently retractile, as in some specimens only two joints are discernible, where- 

 as in others four joints could be seen ; the second joint seems to be retrac- 

 tile in the first ; the fourth is rudimentary. The visible portion of the 

 head above is ix'regvilarly wrinkled and marked with some punctures; be- 

 low it has two short, parallel, longitudinal striae on the gula. Epistoma 

 distinct, small, trapezoidal ; lahrum suboval, almost as long as broad, nar- 

 rowed at the base, broadest in the middle, narrowed again and ciliated at 

 the tip. Mandibles very strong, horny, black, rounded at the tip, regu- 

 larly convex on the outside ; inside somewhat excavated and applying ex- 

 actly with the broad, rounded tip, against the inside of the opposite man- 

 dible. The maxillse and the underlip have the usual structure of these 

 parts in longicorn larvae, only the basal pieces are shorter than in the larva 

 of Parandrd and the lingua seems to be less developed. 



The prothorax is twice broader than long, rounded anteriorly, flattened 

 above and below, bi'OAvnish -yellow, covered, especially on the sides and 

 below, with a short, golden pubescence. The sutures of its component 

 parts are by far not so distinct as in the preceding species. A deep, long- 

 itudinal, sinuated furrow is visible on each side; a short transverse furrow 

 crosses its posterior end. The upper disc is enclosed between two furrows 

 beginning at the posterior margin and not reaching the anterior one ; a 

 transverse furrow, parallel to the posterior margin separates a narrow fleshy 

 fold The anterior portion of this upper disc is irregularly punctured 



