334 MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARIÆ. 
conical; a small anal segment added in the males. The last segment appears to vary 
much in different individuals, being sometimes very long and narrow, but this seems to 
depend on the size of the insect. I have only found the long, produced tail or apical 
segment in large individuals in which the other segments are also larger and longer. 
Metathorax with the epimera and parapleura narrow, and without axillary pieces. 
Fimbriæ usually* very narrow and parallel to the sides. Legs short; thighs feebly 
canaliculated below; tibiæ without any channel for the reception of the tarsi; the first 
three articles of the tarsi dilated and hairy beneath; claws simple. 
All the species of this genus are confined to the tropical regions of the American 
continent. 
HALEPOPEPLUS. 
Position and Affinities.—M.zAcnosronLa. | CONOTELUS. CARPOPHILUS. 
1. CONOTELUS CONICUS. 
Erichs. in Germ. Zeitschr. iv. 251 (1843). 
Stenus conicus, Fabr. Syst. El. ii. 603 (1792). 
Var. C. FUSCIPENNIS. 
Erichs. in Germ. Zeitschr. iv. 251 (1843). 
Ips gracilis (Dej. Coll.). 
Niger, nitidus; thorace crebre punctato; elytris subseriatim punctatis, fuscis; pedibus 
testaceis. Long. 1$ lin. 
Habitat in insulis Indicis occidentalibus. 
Black, somewhat shining. Antennz and labrum rufo-piceous. Head subrugulosely 
punctate, bifoveolate in front. Thorax a little shorter than broad, thickly punctate, with 
the interstices leathery in appearance. Scutellum sparingly punctulate, rounded at the 
apex. Elytra punctate in rows, the punctures distinct, tolerably deep and well defined, 
and pretty far apart; fuscous, becoming black at the apex. Abdomen shining, more 
sparingly and faintly punctate, with the segments margined with piceous ; below piceous, 
the anterior segments black at the base. Legs testaceous. 
Under the microscope the thorax appears very distinctly (almost deeply) and sparsely 
punctate, without being mixed with pittings or variolose flat punctuation. The punc- 
tures on the elytra are also distinct, oblong in shape, and in rows, but not in strive. It 
is easily distinguished by the widely punctate-striate elytra. 
From the West Indies. 
The variety C. fuscipennis (which is from Cuba) differs from the type in being nearly a 
half smaller, the mouth and antennz paler, and the punctuation more sparing and more 
widely scattered. Erichson himself points out the affinity of these varieties. I have 
examined the typical specimen, which is founded upon a unicate, and it appears to me 
to be merely a variety, smaller in size, and, as is usually the case in such instances, more 
faintly punctate. 
* The exceptions are C. rufipes, C. Mezicanus, and C. Stenoides ; and in these the fimbriz are raised, prominent, 
and not so narrow as in the other species. 
