10 PECTINICOENIA. 



ordinary size, considerably wider than the elytra. The following are its measurements : 

 long. corp. 47 millim. ; thorax long. 12J, lat. 18 millim. ; elytra long. 24, lat. basi 15 

 millim. The difference between this and the originally described specimen is probably 

 sexual. 



Section II. Elytra relatively long, the base broadly emarginate. 

 A. Antennal leaflets moderately elongated. 



RIMOR. 



Oileus (partim), Kaup, Monogr. der Passal. p. 60. 

 Rimor, Kaup, ibid. p. 119. 



Two species are known, both from Central America. 



1. Rimor Sagittarius. 



Passalus Sagittarius, Smith, Cat. Brit. Mus. Passal. p. 14,, t. 1. fig. 3 \ 

 Passalus rimator, Truqui, Rev. et Mag. Zool. 1857, p. 266 2 . 

 Rimor Sagittarius, Kaup, Monogr. der Passal. p. 120 3 . 



Hab. Mexico 1 23 , Orizaba (Salle, spec. typ.). 



2. Bimor sargi. 



Rimor sargii, Kaup, Monogr. der Passal. p. 119 \ 



Hab. Guatemala (Sarg 1 ), San Joaquin, Cerro Zunil, Duenas (Champion); Costa 

 Rica, Volcan de Irazu (Rogers). 



TRUQUIUS. 



Elongatus sat depresses. Clypeus quadridentatus, postice sulcato-marginatus ; cornu verticis postice lato, antice 

 longe et libero, tuberculis basalibus utrinque validis obliquis ; carinis frontalibus brevibus, extus cum rugulis 

 versus oculi carinam confusis. Thorax relative parvus, angulis anticis baud prominentibus, sulculo 

 marginali antice dilatato et punctato. Elytra glabra, interstitiis lateralibus vix convexioribus. Tibiae 

 intermediaa extus dense birte nee spinosse. Metasternum disco haud planatum, lateribus anticis punctu- 

 lato-pubescentibus, apice utrinque plaga punctata. 



A genus rendered necessary for the reception of Passalus (Pseudacanthus) astecus, 

 Truqui, which differs from the other species in the relatively great difference in length 

 between the thorax and the elytra. 



1. Traquins aztecus. 



Passalus astecus, Truqui, Rev. & Mag. Zool. 1857, p. 314 \ 

 Pseudacanthus aztecus, Kaup, Monogr. der Passal. p. 74 2 . 



Hab. Mexico 1 2 , Toxpam (Salle, specimen typ.), Orizaba (Salle), Jalapa (Edge). 



