METOPONCUS. 505 
species at Totonicapam under pine-bark, and five specimens on the Quiche Mountains ; 
but the other localities have only yielded unique examples, some of which differ a good 
deal from the type. 
The specimen represented on our Plate was found at Cerro Zunil. 
6. Metoponcus sinuatus. 
Elongatus, subdepressus, nitidus, piceus; capite, thorace elytrisque nigricantibus ; sublevigatus, capite minute 
sparsim punctato, punctis majoribus impressis paucis ; prothorace ad latera fortius sinuato. 
Long. 10 millim. 
Hab. Mexico, Patzcuaro (Flohr). 
This species is allied to M. varians, but is distinguished by numerous minor details. 
The head and thorax are not strigose, but have a distinct distant minute punctuation ; 
the former has also a few larger punctures, the eyes being small. The thorax is narrowed 
behind, and on each side about the middle has a sinuation or impression deeper than in 
the other species ; two or three small punctures on each side of the middle represent 
the dorsal series. The elytra are shining, about as long as the thorax, finely punctulate. 
The front tibiee are much dilated at the extremity. 
7. Metoponcus holisoides. (Tab. XIII. fig. 11.) 
Metoponcus holisoides, Sharp, Trans. Ent. Soc. Lond. 1876, p. 206°. 
Hab. Guatemata, Zapote, Torola, Chacoj (Champion).—SovuTH AMERICA, Amazons 
valley 1. 
One example only was found in each locality. The figure on our Plate is taken from 
the specimen brought from Torola. 
8. Metoponcus minutus. 
Testaceus, nitidus; capite fuscescente ; hoc oblongo, cumque thorace parce subtiliter punctato. 
Long. 23 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne clear yellow; scape short, second joint somewhat elongate, twice or three 
times as long as the minute third joint ; penultimate joints very short, strongly trans- 
verse. Head abruptly truncated behind, only very slightly narrowed in front, very 
shining, with a few fine distant punctures. Thorax straight at the sides, scarcely 
narrowed behind, at the sides very sparingly and finely punctate. Elytra as long as 
the thorax, shining, very minutely punctulate and pubescent. Hind body with the 
apex yellow, the base slightly infuscate. : 
Only one example has been found. It is somewhat doubtful whether the species will 
prove to be really a Metoponcus; but I can see no reason for excluding it at present. 
It is the smallest member of the Xantholinide I am acquainted with. 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, August 1880. 3 TT 
