MR. A. MURRAY'S MONOGRAPH OF THE FAMILY OF NITIDULARLE. - 335 
2. CONOTELUS OBSCURUS. 
Erichs. in Germ. Zeitschr. iv. 252 (1843). 
, Stenus spissicornis, Fab. Syst. El. ii. 603 (1792). 
Niger, capite, thorace elytrisque opacis, his subtilissime seriatim aciculariter punctatis, 
nigro-fuscis; abdomine nitido; pedibus testaceis. Long. 15-3 lin., lat. 3 lin. 
Habitat in partibus meridionalibus Americae borealis. 
Black. Antenne testaceous, with the club ferruginous. Head opaque, very thickly 
and faintly variolosely punctate, bifoveolate in front. Thorax very slightly narrower in 
front than behind, very thickly and faintly rugulose, opaque, most obsoletely subvario- 
losely punctate. Scutellum closely and faintly rugulosely punctate, opaque, with the apex 
rounded. Elytra very closely and faintly rugulose, densely and very faintly and obso- 
letely punctate-striate (punctures shallow pits), opaque, obscure fuscous, becoming black 
on all the margins. Abdomen sparingly and faintly punctate, shining, the segments 
margined with piceous, the last wholly piceous below. Legs testaceous. 
Under the microscope the punctuation of the thorax is a mixture of larger and smaller, 
flat, variolose, pitted depressions. The serial punctures on the elytra are likewise flat, 
variolose, reminding one of rain-drops on sand. 
Found in the south of North America. 
9. CONOTELUS NIGER. 
Erichs. in Germ, Zeitschr. iv. 253 (1843). 
Brachychlamys nigra (Germ.). 
Niger, capite, thorace elytrisque opacis; pedibus testaceis, basi piceis. Long. 12 lin., 
lat. 2 lin. 
Habitat in Brasilia. 
Of the form and size of, and very closely allied to, C. obscurus. Black. Antenne tes- 
taceous, the first two articles and the club piceous. Head opaque, with the forehead 
punctate-rugose, bifoveolate in front. Thorax very closely rugulose, very much obso- 
letely punctate, opaque. Scutellum closely and faintly rugulosely punctate, opaque, 
truncate at the apex. Elytra very closely and faintly rugulose, very faintly and most 
obsoletely punctate in rows, opaque, black. Abdomen sparingly and obsoletely punctate. 
Legs testaceous, with the thighs piceous at the base. 
Distinguished from all the other species by its much more deeply punctate-rugose 
thorax. 
From Brazil and other parts of South America. 
4. CONOTELUS VICINUS. 
Erichs. in Germ. Zeitschr. iv. 253 (1843). 
Niger, subnitidus, capite, thorace elytrisque opacis, pedibus piceis. Long. 13-1} lin., 
lat. 2 lin. 
Habitat in Columbia. 
Black, somewhat shining. Antenne piceous, club black. Head opaque, with the 
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