1862.] 



Ill 



coverins: the basis of the head. The second and fhird se":ments of the 

 thorax as well as eight segments of the abdomen are nearly of the same 

 length, short, transverse, smooth, except some indistinct punctures in which 

 the hairs are inserted, especially a row of theni near the posterior margin. 



These segments are bent on both sides towards the venter, so that the 

 sutures between them and the latter are on the underside of t'le body. 



Ninth or hint Nefpnenf of the abdomen convex above, rounded posterior- 

 ly, projecting beyond its ventral side, which has a large, fleshy tubercle 

 (pseudopod), with a fissure in the middle. 



A longitudinal impressed line is visible on the posterior part of the 

 prothoras and on the three following segments. 



The feet have the usual structure: a large oblique coxa, a distinct, sub- 

 lanceolate trochanter, a stout, short femur, a narrower tibia ending in a 

 horny unguis; the in-ide of the femora is lined with a few short bristles. 



The stigmata are perhaps concealed within one of the ventral furrows, 

 as notwithstanding my repeated eftbrts I did not succeed in finding them. 

 The pnpa has two bristles, inserted at some distance from each other, 

 near the anterior margin of the ]n-othorax ; two similar bristles close before 

 the root of the wings; the abdomen is conical, beset with fine hairs on the 

 margins of the segments; its tip is bifid. 



Dr. George H. Horn who kindly communicated to me this larva, makes 

 the following statement about its discovery (Proc. Jhit. Soc. Phila. 1861. 

 p. 29), " One specimen of the perfect insect and many pupae, together 

 •' with one larva, were taken by myself. They were all found in one log, 

 •' which was rather moist and rotten, its texture being so destroyed that 

 " it was impossible to distinguish the species, though it was probably an 

 " oak. The pupai were concealed by a thin layer of wood, and were on 

 •' the side adjacent the earth. The identity of the pupag was established 

 •' by raising several, and by means of the cast larva skin, which adhered 

 •' to a pupa, I was enabled to identify the larva." 



Although this insect is placed in the same family with (Ji/pkon, it is 

 difficult to discover any points of resemblance between the larvae of both. 



The general appearance, the mode of life and the details of the struc- 

 ture are totally different. The long antenna? and maxillary palpi, the 

 large labrum, excised anteriorly, the depressed, onisciform appearance of 

 the larva of Ci/))li(i)i. (and Prlonoryplion), are replaced here by short an- 

 tenna) and palpi, a short, transverse labrum. almost entire anteriorly, and 

 a cylindrical body, reminding in form and consistence of the \&v\-x. of 

 Elaterldac. The mentum is rather broad in both genera; still it is much 

 larger in Cijplion, where it occupies the greater part of the underside of 



