482 STAPHYLINIDA. 
This species is extremely similar to X. humilis, but is readily distinguished by the 
greater number of punctures in the dorsal series ; also the second and third joints of the 
antenne are a little longer, and the carination of the prosternum can scarcely be said 
to extend at all on to the anterior part. 
Only one example was met with in each locality. 
19. Xantholinus championi. 
Minor, depressus, angustus, nitidus, niger ; elytris stramineis ; antennis piceis, pedibus rufis ; prothorace seriebus 
dorsalibus 5-punctatis. | 
Long. 5 millim. 
Hab. Guatemata, Capetillo (Champion). 
This species is very closely allied to X. humilis, but is considerably smaller, and is 
readily distinguished by the pallid elytra forming an abrupt contrast to the colour 
of the anterior parts; the smaller number of punctures in the thoracic series will 
distinguish it from any of the varieties of X. vilis. The antenne are rather stout, the 
second and third joints quite short; the elytra are only sparingly punctate, but there 
isa series of punctures along the middle quite distinct from the punctuation about the 
suture; the head is shorter and broader than in the immediate allies, and only sparingly 
punctate on the sides; the prosternum is indistinctly carinate along the middle. 
Three examples. 
20. Xantholinus difficilis. 
Minor, nitidus, angustus, piceus ; palpis pedibusque testaceis; prothorace seriebus dorsalibus 5-punctatis sat 
crebre fortiter punctato. 
Long. 5 millim. 
Hab. GuatemaLa, El] Tumbador 2500 feet (Champion). 
This little insect is narrower than X. daxus, and has a smaller number of punctures 
in the thoracic series; it differs from X. championi in being rather smaller, with a 
shorter thorax and concolorous elytra, these latter being also shorter and having very 
little punctuation. The head is rather narrower towards the front than in the 
species mentioned ; the punctures about its sides are not numerous, and there are 
only six punctures at each side of the thorax, forming a curved series. 
Only a single example has been obtained. 
21. Xantholinus laxus. 
Minor, nitidus, piceus ; capite nigro; palpis pedibusque testaceis; prothorace seriebus dorsalibus 7-11 punc- 
tatis; capite utrinque sat crebre fortiter punctato. 
Long. 5 millim, 
Hab. GuatTEMALA, Aceituno (Champion); Panama, Volcan de Chiriqui up to 6000 
feet, Pea Blanca 3000 to 4000 feet (Champion). 
