Coleopterological Notices, V. 3i5 



liowever congeneric without doubt. A single specimen of undeter- 

 mined sex. 



PLATA\DKI.4 n. gen. 



Body rather broad, fusiform. Head well inserted, not constricted 

 at base, the eyes large, oval ; infralateral carina strong, entire. 

 Antennae rather short, slender, becoming gradually strongly incras- 

 sate in apical half. Mentum rather large, transversely trapezoidal, 

 broadly sinuato-truncate at apex. Ligula with a slender process 

 which is deeply forked at apex, each lobe bearing at its apex a 

 slender flexible and attenuate appendage. Labial palpi three-jointed, 

 the basal joint thick, long, cylindrical, obliquely truncate at apex ; 

 third slender, with a terminal appendage. Maxillary palpi well 

 developed, the third joint slightly longer than the second, the fourth 

 long and distinct, with a slender supplementary appendage. Pro- 

 thorax nearly as in Hoplandria, the h^^poraera strongly inflexed and 

 invisible from the side. Elytra well developed. Abdomen gradu- 

 ally narrowed from the base; border strong, the two basal tergites 

 strongly but rather narrowly impressed at base, the third finely and 

 very feebly so ; fifth much longer than the fourth ; sixth distinct 

 and wide. Middle coxte large, oblique, deeply inserted, narrowly 

 separated, the mesosterual process very long and acutely attenuate, 

 extending very nearly to the tips of the coxae, with its apex free 

 and overlapping the apex of the rather short but acute raetasternal 

 process. Metasternum large, the parapleurae moderately wide, per- 

 fectly parallel, the epimera extending scarcely at all behind the 

 elytra. Legs moderate in length, the tibiae slender; tarsi long, 

 slender, 4-5-5-joiuted, the posterior very nearly as long as the tibiae, 

 with the basal joint elongate, the first four decreasing rapidly in 

 length, the fifth somewhat longer and much more slender than the 

 first; ungues moderately long, slender, rather strongly arcuate and 

 divaricate. . 



The paraglossae are not distinct in the type and appear to be 

 much less developed than in Hoplandria and Platonica, with which 

 this genus is to be associated. It differs from the first in the form of 

 the ligula and structure of the tarsi, and from the latter altogether 

 in the structure of the mesocoxal sclerites. In Hoiolandria ochracea 

 the process of the ligula is long and slender, perfectly cylindrical, 

 but bearing at its extreme tip two very minute subparallel and 

 apparently setiform appendages, almost exactly as in the Americaa 

 species of Echidnoglossa. 



Aknals N. Y. Acad. Sci., VII, Oct. 1893.— 23 



