1862.] 



128 



The upper disc of the j)rot/i>>/a.i, liuiited uu both sides by the usual 

 two furrows, beginning at the posterior margin and not quite reaching the 

 anterior one, is covered, on its anterior portion, by dense, parallel, longi- 

 tudinal striae ; this portion (equal to about one-third of the length of the 

 prothorax), is somewhat more convex than the remainder; the remaining 

 two-thirds are more smooth and shining, irregularly and faintly wrinkled ; 

 close by the posterior margin, these wrinkles become more dense and also 

 assume the shape of longitudinal, parallel striae, which however are less 

 deep than those of the anterior margin. The underside of the prothorax 

 .shows a triangular central disc, separated by more or less distinct furrows, 

 and two triangular lateral discs (see Paratidra). A transverse furrow 

 near the posterior margin of the central triangle separates a fleshy trans- 

 verse fold, which, in this genus is very large and distinct. < The corres- 

 ponding fold on the dorsal side is very narrow and much less distinct. 

 The mesothoracic stigma is placed in the fold between pro- and mesotho- 

 rax. 



The two other thoracic and the (dxlonlndl sc<j))i('iifs are nearly of the 

 same size and shape ; only the former are a little broader. On the dorsal 

 side, each of them, beginning with the last thoracic and ending with the 

 seventh abdominal segment, has an oblong, transverse protuberance in the 

 middle, marked on its surface with two transverse rows of small shining 

 tubercles, especially apparent on the fifth, sixth and seventh segment ; 

 eight or ten tubercles may be counted in each row. The rows are con- 

 vergent at both ends. Similar protuberances exist also on the ventral 

 side ; only, instead of eight, they are nine in number, as the mesothorax, 

 which is smooth above, has a protubei'ance of this kind on the underside. 

 The eighth and ninth abdominal segments are smooth ; the anal portion 

 of the ninth is distinctly separated. 



The whole body is sparsely beset with fine golden hairs. 



The absence of feet and the position of the thoracic stigmata indicate 

 the position of this larva among the Lamiidee of Erichson. I found them 

 in winter, burrowing the stalk of a climbing plant, which may have been 

 the grape vine, although I failed at that time to ascertain it positively. 

 The perfect insect was reared from them the next spring. 



CENTRONOPUS ANTHRACINUS Kn.xli. 



Larva O.S long, cylindrical, yellowish-white, of a soft, fleshy consistence, 

 naked, except a few sparse hairs on the head and still fewer on the body. 



Ift (1(1 horizontal, yellowish (except the tip of the mandibles, which is 

 l)rowii). as broad as the jtrothorax, rounded. sn)ooth and convex above. 



