120 
Psyche 
[June 
2 — 3,000 ft, July 1938, P. J. Darlington, 1 specimen (MCZ) ; 
Villa Altagracia [Province of San Cristobal, low elevation], July 
1938, P. J. Darlington, 1 specimen (MCZ). 
Canthochilum ciboney, new species. 
Description.- Oval, feebly convex, piceous, shiny, antennae and 
legs rufous. Head.- Clypeal margin with six small teeth and an ad- 
ditional tooth at clypeo-genal suture (the so-called “octodentate” 
condition). Dorsal ocular areas large, separated by a distance equal 
to 3 times their width (fig. 5). Head surface entirely smooth, shiny, 
uniformly moderately punctate. Thorax.- Pronotum entirely smooth, 
shiny, uniformly very finely punctate. Elytra moderately convex, 
intervals flat and finely shagreened, impunctate. Striae distinctly 
impressed and remotely punctate. Lateral carina alongside 7th stria 
extending for about % of elytral length, not continued as a ridge 
posteriorly. Fully winged. Underside impunctate, slightly sha- 
greened. Meso-metasternal suture obtusely angulate in the middle. 
Inner mid-coxal margin on median lobe of metasternum broadening 
anteriorly, meeting meso-metasternal suture at a moderately obtuse 
angle. Outer mid-coxal margin uniformly narrow, paralleling edge 
of coxal cavity. Fore tibiae with distal edge angulate, bending out- 
ward at insertion of first tooth (fig. 6). Fore spur blunt. Abdomen. - 
Last sternite longer than others along mid-line, as long as previous 
two combined. Pygidium entirely margined, the disc flat, smooth and 
finely punctate. Aedeagus with parameres unequally sclerotized, 
basal piece distally excavated with posteriorly directed projection 
(fig. 7). Total length.- 4.0 mm. 
Sexual dimorphism.- Probably confined to the fore spur, which 
is blunt in the unique male, and perhaps the prothorax, which is 
nearly always slightly widened anteriorly in the males of this genus. 
The legs show no dimorphic modifications. 
Type.- Mt. Trou d’-Eau, Haiti, 19 November 1934, P. J. Dar- 
lington, unique male, MCZ. 
This species is most closely related to the Cuban C. pijirigua Zayas 
and Matthews, especially the latter’s “form 1” (Matthews, 
1966:71), from which it scarcely differs externally, being only a 
little more finely punctate and more pronouncedly octodentate. How- 
ever, the aedeagus is entirely different (compare fig. 7 here with fig. 
73 in Matthews, 1966:68) and unlike that of any other species ex- 
amined. 
The single known specimen was determined as Antillacanthon 
gundlachi (Harold), a Cuban species, by Vulcano and Pereira 
