cutissimae.

Maxillae basi corneae processubus duobus submembranaceis apicem versus
instructae, lobo externo vel apicali ovali extus ciliato, interno
tenuiori apice subacuto margineque interno vix unidentato.

Palpi maxillares quadriarticulati, articulo stipitali minimo inconspicuo,
secundo obconico longo duobus ultimis simul sumptis longitudine fere
aequali, tertio obconico crassiori, ultimo securiformi compressa.

Palpi labiales triarticulati articulo stipitali minimo inconspicuo,
secundo longo obconico setis quibusdam ad apicem instructo, tertio
triangulari compresso vel securiformi.

Labium membranaceum cordatam antice bilobum, lobis elongatis ciliatis
interno latere rectilineari extus ad apicem rotundatis.

Mentum semicirculare antice rotundatum margine antico emarginato.

Caput porrectum oculis prominentibus thorace haud angustius. Thorax
convexus antice posticeque marginatus lateribus rotundatis haud
marginatis. Scutellum triangulare subacutum. Abdomen thorace fere duplo
latius. Elytra humeris eminentibus marginatis, lateribus parallelis.
Pedes pentameri articulis tribus tarsorom primis ciliatis pulvillatis
dilatatis, penultimo bilobo, ultimo tenui biunguiculato. Femora postica
valde incrassata intus unidentata. Tibiae posticae compressae apice
dilatatae angulo externo acuto.

Obs. The structure of the tarsus in this genus, so near in affinity to
Carpophagus and Sagra, has led me to investigate more minutely the tarsus
in the tetramerous and trimerous insects of the French entomologists, and
the result has been that the arrangement given in the third volume of M.
Cuvier's Regne Animal, is discovered to be as erroneous in point of
description, as it is inconsistent with natural affinities.

74. Prionus bidentatus. Don. Ins. of New Holland, table 6.

75. Prionus fasciatus. Don. Ins. of New Holland, table 6.

76. Prionus spinicollis (n.s.) P. piceus antennis filiformibus basi
nigris articulo ultimo vix crassiore, capite fusco tomentoso, thorace
nigro-fusco punctis scabroso, lateribus spinulosus, in medio postice
carina laevi tuberculoque utrinque magno compressa scabro; scutello piceo
nigro-marginato, elytris testaceis punctulatis substriatis apice
unidentatis, pectoris lateribus rufo-tomentosis.

77. Distichocera maculicollis. Kirby, in Linnean Transactions 12.

78. Distichocera ? rubripennis (n.s.) D. rufo-testacea subtomentosa,
capitis lateribus oreque nigris, vertice canaliculato, antennis nigris
ar