PARNUS.—BYRRHOMORPHUS. | 125 
ever, have a quite distinct though distant punctuation on their basal portion, while 
beyond the middle they are nearly free from sculpture. The auricular joint of the 
antenna is small, and is but slightly produced outwardly, as in P. punctipennis; the 
first and second joints are of obscure red colour, the club being yellow. 
I see no sexual character in the two individuals before me. 
ELMOPARNUS. 
Antenne brevissime, late, in fronte perapproximate, 9-articulate, articulo basali fere occulto, secundo valde 
transverso, simplici. Palpi maxillares breves, articulo penultimo brevissimo, ultimo acuminato quam 
penultimus sexies longiore. Caput receptum. Corpus supra nudum nitidum ; caput corpusque subtus 
utrinque pube brevissima vestita ; prothorax basi utrinque stria sat elongata. 
This genus is established for a minute insect having the appearance of an Kimis, 
but allied rather to Parnus, with which genus, indeed, it agrees in most particulars 
except those above detailed. The head at rest is quite received into the thorax, which 
is furnished with a chin-piece separated in front from the sides by a deep and broad 
fissure. The front and middle coxe are very widely separated, while the hind coxe 
are but little distant from one another. The peculiar antenne are very broad and 
short, and the number of their joints difficult to decide on. The rather long and 
slender legs are similar to those of Parnus. 
1. Elmoparnus brevicornis. 
Oblongo-ovalis, parum elongatus, piceus, nitidus ; antennis pedibusque rufo-testaceis; prothorace leviter trans- 
verso, antrorsum parum angustato, angulis anticis valde prolongatis, peracutis, basi utrinque striola 
impressa sat elongata; elytris cum prothorace irregulariter sparsim sat fortiter punctatis. 
Long. 14, lat. 3 lin. 
Hab. Panama, Bugaba 3800 to 1500 feet (Champion). 
Head clothed with dense fine tomentum as in the genus Parnus, the rest of the 
upper surface shining and quite free from clothing. ‘The extreme base of the thorax 
is free from punctuation ; but the rest of the surface is sparingly and coarsely punctate. 
The punctuation of the elytra is rather less scanty than that of the thorax. 
The species is readily distinguished from all the others of the subfamily by the fact 
that the head, densely covered with tomentum, forms a remarkable contrast to the 
bare and shining prothorax and elytra. Only a single individual has been found: it 
has the apical ventral segment very large and shining; and its peculiarity in these 
respects induces me to think it is a male. 
BYRRHOMORPHUS. 
Corpus ovale, sat convexum, pube haud omnino brevi dense vestitum. Antenne parum elongate, 11-articulate, 
articulo basali elongato, secundo subquadrato, simplici, ceteris versus apicem gradatim latioribus, brevibus. 
Palpi articulo ultimo valde dilatato. Pedes anteriores et intermedii perdistantes; coxe anteriores trans- 
verse, longissime ; femora haud elongata. 
