IXHABITING NOnrn AMERICA. iDt 



Length one-fourth of an inch. 



Dytiacusmandostts. Mthh. Catal. 



Body yellowish-testaceous, u;lat)rous. 



Elytra blackish, three spots or dilated lines at base, of whicli 

 one is humeral and one subsutural, each einare;itiato at 

 tip and profoundly so on the inner side, and the tliiid ratlier 

 shoitcr, arisinc; from the middle of tiie liasc, two marniiial 

 spots of which the anterior one is much the largest, a 

 common irrej2;ular spot l)chind the middle, and an apicial 

 common band, white, tip obliquely truncate. 



Var. a. Trunk beneath black. 



Var, n. Yellowish-testaceous ; elytra with a common black 

 band behind the middle. 

 Rather a common insect. — The last variety is a rcmar- 



kai)lc one ; but, when closely examined, traces of some of 



the spots are perceptible upon it. 



S. L. ^proximus yellowish-testaceous ; elytra blackish obso- 



letely spotted with dull whitish. 

 length three-twentieths of an inch. 

 Body yellowish-testaceous, paler beneath. 

 Elytra with spots as in the preceding species, but obsolete. 



the larger marginal one distinct. 



This species 1 found very numerous in the fresh water 

 marshes of South Carolina. I do not hesitate to give it as 

 distinct from the preceding, although so closely allied to it 

 by the elytral macuht. It is readily distinguishable by its in- 

 ferior size. 



Genus Hvdroporus. ClairrUle. 



The four anterior tarsi apparently four-jointed, the fourth 

 joint minute, and with the base of the fifth concealed in 

 a profound fissure of the third Joint; body oval, the 

 breadth greater tlian tlic heiglit; scutcl none 



