OF NATURAL HISTORY. 6i5 



nob., strictly belongs to this genus, as well as the JVituhda/asci- 

 ata and sanyuinolenta of Olivier. 



3. I. 4-MACULATA. — Bkck ; elytra with a basal and terminal 

 ferruginous spot. 



/. ■^-macuJata Melsh. Catal. ^ 



Body black, polished, oblong-oval, punctured : clypeus, at tip, 

 tinged with piceous ; antennae piceous : elytra [170] with a large 

 ferruginous spot at the middle of the base, and another some- 

 what longer one at tip of each : feet and tip of the venter rufous. 



Lenffth more than one-tenth of an inch. 



[Belongs to Engis. — Leg.] 



4. I. viTTATA. — Blackish-brown ; elytra with whitish, abbre- 

 viated vittae. 



Inhabits Arkansaw. 



Body dark brownish ; elytra with a whitish vitta abbreviated 

 beyond the middle and abruptly curved at base towards the scu- 

 tel : another much abbreviated, somewhat oblique one, hardly 

 reaching the middle of the humerus, and an intermediate one 

 hardly more than one-fourth of the length of the elytra ; tip 

 obliquely truncated. 



Length less than three-twentieths of an inch. 



This species was presented to me by 31r. Nuttall, who obtained 

 it during his expedition to Arkansaw. 



[Unknown to me. — Leg.] 



HYDROPHILUS Fabr. 



H. CASTUS.— Oblong-oval, black; palpi rufous; thorax with 

 an oblique line each side. 



Inhabits Louisiana. 



Body black, polished : head with a dilated, hardly impressed 

 oblique line each side before, in which are scattered punctures 

 with short hairs, another narrower impressed line nearer the eye: 

 antenna, first joint of the club with an acute ciliated process: 

 second joint triangular, small, the anterior angle prominent, 

 acute; terminal joint subovate, rounded at tip: palpi rufous, 

 last joint hardly as long as the preceding one : labrum slightly 

 and very widely emarginate, the anterior edge piceous, and about 

 two small punctures on the middle : thorax with a rather slender 

 1835.] 



