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this genus in caves in mainland North America, althoughit is common in Antillean caves. Peck (1973a,1977a) has summarized the catopine beetle fauna ofthe caves of Mexico, Belize, and Guatemala. Threespecies of Dissochaetus have been identified fromcaves in southem and eastern Mexico and from Belize.Dissochaetus aztecus Szymcakowski has been reportedfrom caves in Nuevo Leon, San Luis Potosi,and Tamaulipas; D. curtus Portevin has been collectedin Cueva Cerro Hueco, Chiapas; D. hetschkoiReitter, a widespread species ranging north fromBrazil into Nuevo Leon, Mexico, has been reportedfrom caves in Campeche, Oaxaca, San Luis Potosi,Veracruz, and Yucatan, Mexico, and from Rio FrioCave B, Belize. A species with reduced eyes, Proptomaphaginusmicrops Peck, is known from caves inthe Xilitla and Aquismon regions of San Luis Potosi;Peck (1973a) considers this to be an endogean form.An undescribed species of Proptomaphaginus has recentlybeen collected in Cueva de la Finca, Oaxaca.See Fig. 80 for the distribution of cavemicole Dissochaetusand Proptomaphaginus in Mexico and Belize.MEXICOGUATEMALA/.//r\r"r- 0o~Fig. BO.-Distribution of troglophilic leiodid beetles of the genera Dissochaetus and Proptomaphaginus: 1, Dissochaetusaztecus; 2, D. aztecus and D. hetschkoi; 3, Proptomaphaginus microps; 4, P. microps and D. aztecus; 5, D. hetschkoi; 6, Proptomaphaginusn. sp.; 7, D. curtus.227