100 DESCRIPTION OF INSECTS 



impressed, abbreviated, frontal line each side; aMennw 

 and palpi piceous. 

 Elytra with two or three distinct series of punctures, some- 

 what irregular, scattered behind, eacii elytron with a pale, 

 fenestrate, elongated, submarginal spot behind the middle, 

 and a subtriangular one near the tip. 

 Feet piceous. 

 Far. a. Body beneath testaceous ; frontal spots obsolete. 



This species approaclies very near to fenestralis, l)ut dif- 

 fers in having the series of large distinct punctures, in being 

 not more than half the size of that insect and more obtuse 

 before. Found on Mr. R. Haines's farm, Germantown, 



10. C. *stagni?ius oval, black, beneath rufous; vertex with 

 two piceous spots ; elytra with a submarginal whitish line 

 behind. 



Length less than seven-twentieths of an inch. 



Dytiscus stagninus. Melsh. Catal. 



Body oval, obtuse behind, black, beneath rufous. 



Head with two obscure piceous spots on the vertex, a single, 



impressed, transverse, abbreviated line and point each 



side before ; nasiis and labrum piceous. 

 Elytra with three dilated lines of irregular, profound, rather 



large punctures, becoming confused at tip, an abbreviated, 



submarginal, whitish hne on each elytron, originating near 



the middle of the tip. 

 Tergum with a few hairs each side behind. 



Genus Laccophilus. Leach. 



Antennae setaceous, longer tlian the head ; scutel none ; an- 

 terior tarsal joints of the male not patelliform; palpi fili- 

 form. 



Species. 



1. L. *maciilosus yellowish-testaceous; elytra blackish, li- 

 neated and spotted with white. 



