362 NITIDULIDZ. 
The punctures of the series on the elytra are in this species moderately close, but 
little impressed; the interstices are not in the least convex, and have an extremely 
fine punctuation. ‘The scutellum is rather elongate, as well as broad. 
Only one specimen was found of this remarkably broad little Nitidulid. 
3. Cyclocaccus leticulus, sp. n. 
Brevis, sat convexus, flavus; capite, antennarum clava, prothoracis medio elytrisque nigerrimis ; his subtiliter 
seriatim punctatis. 
Long. vix 3 millim. 
Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion). 
Head quite impunctate, deeply transversely impressed. Thorax very short, impunc- 
tate, broadly yellow on each side, and with a black patch, of about the same width as 
the yellow lateral part, along the middle. Scutellum large, impunctate, scarcely 
sinuate at the sides, rounded behind. -Elytra with regular series of distant punctures, 
each puncture only slightly impressed, but rather large; the interstices not in the least 
convex, and without sculpture. Pygidium and under surface bright yellow. 
Only one specimen has been received. 
OXYCNEMUS. 
Oxycnemus, Erichson, in Germar’s Zeitschr. iv. p. 351 (1843). 
This genus consists of four or five species, and is confined to Tropical America. 
Psilopyga, Leconte, has been referred to it as a synonym, but this is incorrect. 
The genus is one of the very few genera of Nitidulide that possess a spinose pro- 
duction of the outer angle of each tibia. 
1. Oxycnemus rostrosus. (Tab. XI. fig. 22, ¢.) 
Oxycnemus rostrosus, Reitter, Verh. Ver. Brinn, xii. 1, p. 137°. 
Hab. Mexico, Cordova (Sallé); Guatnmata, San Juan and San Gerénimo in Vera 
Paz, Zapote (Champion); Nicaragua, Chontales (Janson); Panama, Bugaba (Cham- 
pion). | 
The specimens I refer to this species are fourteen in number, and if all really belong 
to one species it is a variable one in size and punctuation. As the form of the male 
mandibles is the same in all the individuals of that sex, I treat them as of one species, 
though they exhibit a good deal of variation in size and punctuation. If there be 
more than one species amongst these specimens it will no doubt prove a difficult 
matter to distinguish them by any conspicuous characters common to the two sexes. 
In the males there appear to be some slight differences as to the extent of the dila- 
tation of the intermediate feet. 
