1862.] " K»7 



This larva shows a decided analogy with those of Oufhif/jhui/u^ ( Muls- 

 ant, Lamellicornes, p. 104, tab. I, fig. 5) and Canthon w/<;e/ts'(('aMdeze, 

 Hist, des Mctam. de quclques larves exotiques, tab. II, fig. 2), with the 

 following differences: it is much stouter than both, especially than Can- 

 thon; it has no vestige of a hairy protuberance on the back, like Ontho- 

 2ih(ujus) its labruni is less distinctly three-lobed. 



ZENOA PICEA Beauv. 

 (Plate 1. Fig. 2.) 



Larva resembling those of the B/aferidse or Touhrlonidec in general ap- 

 pearance ; cylindrical, the head being almost of the same breadth as the 

 body, substance hard, horny, more or less dark brown; length, a little 

 more than an inch. "^ 



Head stout, rounded, almost subglobular. inserted in the first thoracic 

 segment, so that the front and the occiput above and a part of the gula 

 below, are not covered by this segment. Front and occiput are deeply 

 punctate; the latter has a short, longitudinal furrow in the middle; gula 

 submembranaceous. Oral opening wide; its upper border somewhat re- 

 flexed, incrassated ; its lower border, enclosing the maxiiUc and the under 

 lip, is cut out square, but does not reach the border of the thorax. 



Lahrum transverse, horny, jagged anteriorly, very uneven on its sur- 

 face, showing deep punctures, placed in a row posteriorly, a depression 

 before them, and many wrinkles on their intervals. 



Antiiinfe. rudimentary, apparently retractile, as they seem to be repre- 

 sented by two short tubercles, ending in a l»ristle, and projecting from a 

 pit visible on each side of the head, on the oral border. 



Ocelli not apparent. 



Mandibles small, horny, strong, subpyramidal, ending in three teeth, 

 the intermediate being the largest; the furrows, forming the intervals of 

 these teeth, run some distance down the outside of the mandible; there is 

 an excavation between them. This ]iair of organs is concealed deeply 

 within the oral opening and cannot be distinctly seen, unless the mouth 

 is dissected. 



Maxillae: a rather large cardinal piece, connate with the mentum ; a 

 basal piece, which is more than twice broader than it is long; a small, al- 

 most horny, suboblong, lamelliform lobe, rounded at the tip and bristly on 

 the inside, and a second, still smaller, inner lobe, inserted below the first 

 and closely applied to it; it is also beset with bristles and is concealed 

 from view by the labium; maxillary palpi short, conical. 4-jointed; the 

 first joint, although the longest, is still broader than long; the other joints 



