166 Coleopterological Notices. 



beneath by mncb less than their own width. Antennae nine-jointed ; basal 

 joint as long as the next three together, slender at base, strongly inflated 

 toward apex, the apical margin fringed with a single row of long erect setse ; 

 second wider than long, narrower than tlie first, strongly narrowed at base ; 

 third to fifth subeqiial in length, longer than wide, subcylindrical and sub- 

 anchylosed ; sixth very short, strongly transverse, slightly wider ; seventh to 

 ninth forming a very large club, twice as long as the stem — measured in a 

 direction perpendicular thereto — strongly arcuate toward apex, and, in shape 

 and relationship with the stem, exactly as in Polyphylla. Vertex with a fine 

 longitudinal ridge over each eye ; clypeal suture obsolete except near the sides 

 where it is fine and transverse. Anterior margin of the pronotum with a broad 

 flat bead throughout ; posterior margin witli a very much finer one, which 

 becomes abruptly very fine in the middle and also laterally. Scutellum rather 

 large, ogival. Elytra projecting well behind and partially concealing the 

 pygidium. Anterior coxae large, transverse, strongly conical and prominent 

 internally ; presternum very short before them, the anterior margin broadly 

 bisinuate between the strongly advanced and acute anterior angles of the 

 pronotum ; hypomera rather wide, nearly flat and almost horizontal ; femora 

 large, broad, flattened, posterior very large ; anterior tibiae with a small acute 

 internal spur near the apex, two external obtuse teeth, and a prolonged apical 

 process wliich is slightly dilated toward apex ; middle and posterior tibiae 

 robust, festooned in the middle with an oblique girdle of spinules, obliquely 

 truncate and dilated at apex, with a fringe of short robust spinules, and two 

 long terminal spurs ; tarsi very long and slender, twice as long as the tibiae ; 

 joints very long, slender and cylindrical; basal joint longest; claws very 

 slender, long, finely acuminate, very feebly arcuate, equal and very minutely 

 carinate internally at base. Metasternum very obliquely truncate at the sides 

 behind, in the middle longer than the abdomen ; episterna short and broad. 

 Abdomen extremely short in the middle, broad, consisting of five segments ; 

 sutures distinct throughout the width ; first segment almost completely covered 

 by the very large posterior coxae. Pygidium moderate, about as long as wide, 

 feebly convex, rounded at apex, very feebly and inwardly oblique. 



The very long slender tarsi and nine-jointed antenna seem to 

 point at first to a relationship with Macrodactylus, but the very 

 large mentum, feebly inflexed clypeus and abdominal structure of 

 the latter prohibitVny such association. From the Sericini it differs 

 in its very minute elongate mentum, this organ in that group being 

 large and transverse. From the Dichelonychini it differs in its 

 minute mentum and obsolete labrum, and from all these in the form 

 of the labial palpi. The latter are extremely minute, scarcely visi- 

 ble, and closely approximate, the two basal joints very small, sub- 

 globular, the third longer than the first two together, elongate-oval. 



In the genus Podolasia the clypeus is formed nearly as in Acoma, 

 but is slightly more developed above, and inflexed for a much shorter 



