new Species of the Coleopterous Family Paussidce. 93 
table. If is very^closely allied to the species which Mr. Saunders 
has done me ftlie honour to name after me, which is also from 
India, and which is distinguished from the present species by its 
larger size, its much broader outline, and particularly by the 
black colour of the base and apex of the elytra, which colour is 
indeed so extended over these organs as to leave the castaneous 
colour almost in the shape of a narrow St. Andrew’s X. The 
parts of the mouth are similar to those of Platyrhopalus JVest- 
woodii. 
Plate 10, fig. 6 a, represents the antenna seen from the front, and 6 l>, the under- 
side of the abdomen. 
Genus. Lebioderus, Westw. Plate IX. fig. 8. 
Corpus depression, latiusculum. Caput thorace multo angustius, 
postice in collum breve contractum, subtriangulare ; antice 
emarginatum, angulis posticis pone oculos subacute productis, 
vertice linea depressa ; oculis mediocribus lateralibus. Palpi 
maxillares maximi, 4-articulati, articulo lmo brevissimo, 
2ndo maximo, interne sensim ad apicem in lobum magnum 
acutum producto, articulis duobus apicalibus multo minoribus, 
subsequalibus, ultimo obovali apice in vesiculam parvam 
terminato. Mention cum capite baud articulatum, trans- 
versum, angulis anticis lateralibus acute productis, denteque 
parvo breviori centrali instructum ; palpi labiales 4-articulati, 
articulo primo parvo, crasso, 2do minuto, annuliformi, 8tio 
longiori, ultimo prsecedentis longitudine, graciliori, oblongo- 
ovato. Antennae maximae ut videtur 7 ?-articulatse ; articulo 
lmo ovali, 2do ? minutissimo, reliquis 5 latissimis, massam 
ovatam depressam et irregularem formantibus. Thorax 
(scil. pronotum) latus, elytrorum fere latitudine, depressus, 
lateribus anticis rotundatis et in lobum productis, posticfe 
truncatis, portione postica thoracis multo angustiori. Elytra 
lata, oblongo-quadrata ; humeris antice et oblique productis ; 
angulis posticis tuberculo ordinario munitis. Alee 2. Pedes 
sat graciles, paullo compressi ; tarsis evidenter 4-articulatis, 
articulis basalibus subaequalibus. Abdomen elytris paullo 
longius, apiefe acuminato, 4-annulatum. 
This very curious genus appears to be intermediate between 
Platyrhopalus (with which it agrees in the comparative shortness 
of the terminal joint of the labial palpi, and in the structure of 
the maxillary palpi) and Pentaplatarthrus, with which it might be 
associated from the remarkable construction of the antennae. It 
