276 APPENDIX. 



the whole surface, and three series of fasciculated, more fer- 

 ruginous hairs on the sutural half; on this half the punc- 

 tures are larger and the striae more deeply impressed than 

 on the exterior half where the surface has a minutely gra- 

 nulated appearance ; tip acute ; feet blackish-piceous ; 

 tarsi piceous ; anterior tibia with a line of dense yellow- 

 ish hairs before. 



Length one-fourth of an inch. 



HYDROPHILUS, Fahr. 



1. H. cinctus. Black, surrounded with a yellowish 

 margin. 



Inhabits United States. 



H. cinctus, Knock, in Melsh. Catal. 



Body black, polished ; with very numerous, minute, re- 

 gular punctures; head with a large, triangular, yellowish 

 spot before the eye ; palpi yellowish ; antennse fuscous ; 

 thorax margined with yellowish ; this colour is sometimes 

 obsolete on the anterior margin, and generally obsolete on 

 the posterior margin ; elytra without any appearance of 

 striae ; the exterior margin from the humerus to the suture, 

 yellowish ; beneath blackish-piceous ; tarsi dull yellowish. 



Length more than one-fifth of an inch. 



We obtained specimens on Red river of Lake Winne- 

 peek; it is also found in Pennsylvania. 



2. H. globosus. Very convex, oval ; elytra with striae of 

 punctures. 



Inhabits United States. 



H. globosus. Knoch. in Melsh. Catal. 



Body very convex, black, immaculate, punctured ; head 

 with very regular minute punctures, and three or four 

 somewhat larger ones before the eye ; palpi yellowish ; 



