Mandibulata.] natural HISTORY. 
449 
Caput porrectum oculis prominentibus thoracc baud ang’ustius. 
Thorax convexus antice posticcque marginatus lateribus rotundatis 
baud marginatis. Scutellum triangulare subacutum. Abdomen 
thorace fere duplo latius. Elytra bumeris eminentibus marginatis, 
lateribus parallelis. Pedes pentameri articulis tribus tarsorum 
primis ciliatis pulvillatis dilatatis, penultimo bilobo, ultimo tenui 
biunguiculato. Femora postica valde incrassata intus unidentata. 
Tihice posticse compressae apice dilatatae angulo externo acuto. 
Ohs. Tbe structure of the tarsus in this genus, so near in affinity 
to Carpophagus and Sagra, bas led me to investigate more mi- 
nutely tbe tarsus in tbe tetramerous and trimerous insects of the 
French entomologists, and the result has been that tbe arrange- 
ment given in the third volume of M. Cuvier’s Regne Animal, is 
discovered to be as erroneous in point of description, as it is in- 
consistent with natural affinities. 
74. Prionus bidentatus. Don. Ins* of New Holland, tab. 6. 
75. Prionus fasciatus. Don. Ins. of New Holland, tab. 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 spinulosis, in 
medio postice carina Isevi tuberculoque utrinque magno com- 
presso scabro ; scutello piceo nigro-marginato, elytris testaceis 
punctulatis substriatis apice unidentatis, pectoris lateribus rufo- 
tomentosis. 
77. Distichocera maculicollis. Kirby, in Lin. Trans, xii. 
78. Distichocera ? rueripennis, (n. s.) D. rufo-testacea sub- 
tomentosa, capitis lateribus oreque nigris, vertice canaliculate, 
antennis nigris articulis vix biramosis ramis sinistris brevis- 
simis, thorace atro vitta utrinque rufotestacea, scutello nigro, 
elytris rufo-testaceis tomentosis apice obtusis dehiscentibus, 
corpore cuneiformi subtus villo argenteo micante, abdomine 
utrinque nigro raaculato, pedibus nigris. 
Ohs. This insect may be considered a Molorchus with elytra as 
VoL. II. 2 G 
