112 [January 



the head; its labial palpi are remarkably distant from each other, whereas 

 they are approximated in the larva of PtUodactyla. It may be that the 

 larva (A Atopa^ if better known, would show more relations-hip to the lat- 

 ter; but the details given in the only description (without figure) which 

 is extant (Erichs. Wiegm. Arch. 18 i I, p. 88 and Chap. & Candcze, 1. c. p. 

 492) seem rather to justify an opposite conclusion. Antcnras, episttnia, 

 labrum, mandibles, maxillae etc., of the larva of At( fa .'ccm to le dif er- 

 ent. Its head is perpendicular, as in the LLmellicoin larvae, and not hor- 

 izontal. 



It would be difficult at present to point out any other relationship of 

 the larva of PtilodnrtyJn; that to the Elatcridse is merely confined to seme 

 analogy in the general appearance; the differences are very considerable. 



FORNAX BADIUS Mels. 

 (Plate 1. Fig. 4.) 



The first larva of Fornax was described and figured by Mr. Coquerel 

 in the Annales de la Soc Enfom. Vol. IV, 3e Serie, 185'J. It came from 

 Madagascar. The larva of the American s] eces, kindly communicated 

 to me by Dr. Horn in Philadelphia, agrees with that of Mr. CVquoel in 

 all the principal characters, especially the singular structure of the head. 



The larva of F. badius is 0.83 long, linear, flat, slightly coarctate at the 

 incisures; its consistence is tough, its color (except the head and some 

 horny spots on the body), yellowish; it has no feet. Examined under a 

 strong lens, the skin of the larva appears finely striate. 



T/if head is semi-elliptical, flat, horny, dark brown in the middle, red- 

 dish-brown on the sides; its sharp margins are serrated as follows: in the 

 middle, anteriorly, there is a small excision with two minute projections, 

 or teeth, on each side; behind them, six larger teeth may be counted on 

 each side, the last of which is the largest and is preceded by a deeper ex- 

 cision. The interpretation of these teeth, as parts of the mouth, is not 

 without difficulty. The two pairs of minute projections on the anterior 

 part of the head, if viewed from below, appear separated from the lower 

 cephalic plate by a stout, bisinuated suture and may, perhaps, be taken 

 for the underlip. In the interval between the first and second lateral 

 teeth a very minute, 2-jointed, palpiform organ, with a similar, 1-jointed 

 organ close by it, on the inner side, are perceptible. They project from 

 a perforation in the horny substance of the head and seem to be retractile, 

 as they are not visible in some specimens. I incline to take the one for 

 the maxillary palpus and the other for the inner lobe of the maxilla. The 

 lateral teeth 2 — 4. seen from below, appear separated by a suture. This 



