16 PECTINICOENIA. 



Hab. Guatemala, Cubilguitz (Champion) ; Nicaeagua, Chontales (Janson) ; Panama 

 Volcan de Chiriqui (Champion). 



Very closely allied to, and probably, only a well-marked local variety of, B. maillei, 

 which variety, however, does not embrace all the individuals of the localities in which 

 it occurs. B. maillei in its normal form (clypeus obtusely indented in the middle) 

 co-exists with it, and some Chiriqui examples show a tendency to bridge over the 

 difference between the two forms. B. maillei and B. cwlatus are related to each other 

 in a similar way. 



3. Rhodocanthopus caelatus. 



Passalus cadatus, Erichs. Consp. Col. Faun. Peruan., in Wiegmann's Archiv, 1847, p. 112 1 . 

 Rhodocanthopus calatus, Kaup, Monogr. der Passal. p. 91. 



Hab. Beitish Hondueas, E. Sarstoon (Blancaneaux) ; Guatemala, El Tumbador, Cerro 

 Zunil, Capetillo, Calderas, Coban, Panima, Sinanja (Champion); Nicaeagua, Chontales 

 (Janson) ; Costa Rica, Volcan de Irazu (Bogers) ; Panama, Volcan de Chiriqui (Cham- 

 pion). — South Ameeica, Peru 1 . 



4. Rhodocanthopus inops. 



Passalus inops, Truqui, Rev. & Mag. Zool. 1857, p. 268 \ 



Rhodocanthopus morio, Kaup, Monogr. der Passal. p. 91 ( = P. morio, Perch. ?) . 



Hab. Mexico 1 , Cordova, Orizaba (Salle). 



Kaup refers this species to Passalus morio and P. longulus of Percheron. It does 

 not at all agree with Percheron's description of either of those species, the former of 

 which is said to be common in Brazil and the latter to be from an unknown locality. 



5. Rhodocanthopus guatemalensis. 



Oileus guatemalensis, Kaup, Harold's Col. Hefte, v. p. 6 \ 

 Rhodocanthopus guatemalensis, Kaup, Monogr. der Passal. p. 92. 



Hab. Guatemala \ Tactic, San Geronimo (Champion). 



Found by Mr. Champion in decaying liquidambar and other trees at Tactic ; and in 

 the forest on the summit of the Chuacus range of mountains, above San Geronimo ; in 

 both places at an elevation of about 5000 feet. 



6. Rhodocanthopus punctatostriatus. 



Passalus punctatostriatus, Percheron, Monogr. des Passales, p. 78, t. 6. fig. 1. 

 Passalus contractus, Percheron, in Guerin's Mag. Zool. t. 79. f. 2. 

 Rhodocanthopus punctatostriatus, Kaup, Monogr. der Passal. p. 92. 



Hab. Mexico, Orizaba, Vera Cruz, Juquila, Chiquihuite (Salle), Jalapa (Morrison, 

 Hoge); Beitish Hondueas, E. Sarstoon (Blancaneaux); Guatemala, Yzabal (Salle), 

 near the city (Salvin), Aceituno, Capetillo, Pantaleon, San Isidro, Cerro Zunil, San 



