ON THE LAMELLICORNES. 537 



the eyes white, the thorax channeled, the elytra with nume- 

 rous longitudinal punctated striae. 



The Passali are removed from the lucani by many cha- 

 racters. Their antennas are not elbow-formed. The labium 

 is very different from that of the lucani. The mandibles, 

 though salient and corneous, like those of the lucani, are 

 thicker, always very much denticulated, and almost similar 

 in the two sexes. The palpi are almost equal, with the last 

 articulation cylindrical. The upper part of the head is un- 

 equal, and that of the male presents more decided eminences, 

 or even a species of horn. The corslet is square, and sepa- 

 rated from the abdomen by a very apparent pedicle. The 

 elytra fall abruptly on the sides, to envelope those of the 

 abdomen. The feet are nearly similar to those of the lucani, 

 but shorter. 



The passali are pretty large coleoptera, of a uniform and 

 shining black, or sometimes of a marron brown. They in- 

 habit the hot countries of both continents. Some are even 

 found in New Holland. But they are more abundant in 

 America, and particularly in Cayenne and Surinam. 



Madame de Merian, who has given a figure of the passalus 

 interruptus, tells us that she found its larva in the roots of 

 the hattata, a plant which grows in Surinam. She has also 

 given the figure of this larva, which resembles a thick worm 

 in its form. The body is very thick, the head small, the ex- 

 tremity of the body slender, and there are six scaly feet. As 

 the passali have several relations with the lucani, we may be- 

 lieve that their larvae live in the same manner, undergo the 

 same metamorphoses, and are equally several years in arriv- 

 ing to their perfect state. 



