Psyche 
[June 
I T 6 
11:389); Paulian, 1939, Psyche 46:141; Paulian, 1947, Coleopteres des 
Antilles 1:32; Matthews, 1966, Mem. Am. Entomol. Soc., no. 21, p. 54. 
Genus Canthochilum Chapin, 1934. 
Simultaneously with the appearance of the author’s revision (Mat- 
thews, 1966) there appeared another revision of the Autillean 
Canthonina by Vulcano and Pereira (1966), based largely on the 
MCZ material. In the latter work, the authors restrict the name 
Canthochilum to its type species from Puerto Rico ( oakleyi Chapin), 
erect another monotypic genus Chapincanthon for the Puerto Rican 
hispidum Chapin, and place the three remaining species they recognize, 
from Puerto Rico, Cuba, and Hispaniola, in the new genus Antilla- 
canthon. 
The separation of Canthochilum sensu stricto is based on a sup- 
posed sclerite (or “piece”) separating the lateral lobe of the meta- 
sternum from the mid coxa (Vulcano and Pereira, 1966:136, fig. 
57). This piece is in fact not a sclerite but the widened margin of 
the mid-coxal cavity and therefore part of the metasternum itself, 
from which it cannot be separated (compare Matthews, 1965:460, 
fig. 15, msc). Some species of Uroxys have a similar widened mid- 
coxal margin. 
The separation of Chapincanthon is based on the covering of 
clavate hairs which hold a layer of soil on C. hispidum, its posterior 
elytral tubercles, its reduced hind wings, and a number of additional 
features which are actually shared with other species. 
The features mentioned, while unusual, are considered by the 
present author to be superficial modifications superimposed on a 
basic plan which is common to all of the species of Canthochilum. 
This basic plan, or generic conception, has been presented before as 
the description of the genus (Matthews, 1966:60; Zayas and Mat- 
thews, 1966:2) and need not be repeated here. 
Therefore, the present author considers Antillacanthon Vulcano 
and Pereira and Chapincanthon Vulcano and Pereira to be subjective 
synonyms of Canthochilum Chapin. 
Among the Cuban and Hispaniolan Canthochilum examined by 
Vulcano and Pereira (1966) were a number of then undescribed 
species to which they assigned the names histeroides Harold, 1868, 
and gundlachi Harold, 1868. In fact, these two species were not 
represented in the MCZ material subsequently examined by the 
author. This material contains some Cuban species recently described 
by Zayas and Matthews (1966) and the three undescribed 
Hispaniolan species discussed below. 
