272 ACADEMY OF NATURAL SCIENCES 



ous, varied with dusky : scutel piceous : elytra dull testaceous, 

 but having a fuscous appearance in consequence of very numer- 

 ous, minute, blackish, confluent points; a narrow dull testaceous 

 exterior margin, in which the blackish points are less numerous ; 

 three series of distant obsolete punctures : beneath piceous : ven- 

 ter varied with dull testaceous, and with about four spots of the 

 same color on each lateral margin. 



Length less than one-half an inch. 



I have never found this insect in Pennsylvania. I purchased 

 several specimens, with a collection of insects, several years ago 

 in New York, of which State it is therefore probably a native. 

 The elytra of the female are not sulcated, but are precisely simi- 

 lar to those of the male. 



I have recently received specimens from Pr. Harris, of Massa- 

 chusetts, who obtained them in that State. 



[A species of Hydaticas, subsequently described as ; D. thora- 

 cicus Harris, Colymhetes ntgricollis Kirby; H. hrunnipennis 

 Aube.— Lec] [161] 



CYPHON Fabr. Dej. 



1. C discoid[e]us. — Testaceoiis; elytra with a common black 

 disk. 



Inhabits Arkansa. 



Body oval, pale testaceous, with short yellowish hair : head 

 and thorax impunctured : eyes fuscous : scutel triangular, with a 

 slightly depressed margin : elytra with a large common black 

 disk ; numerous small punctures furnishing hairs : wings black. 



Length one-fifth of an inch. 



Taken on the banks of the river Arkansa by Mr. Thomas 

 Nuttall. 



2. C. ovALis. — Blackish, or yellowish-brown, pubescent ; tho- 

 rax narrow, transverse. 



Body rather short, oval, considerably depressed, blackish or 

 yellowish-brown ; with short, numerous hairs ; antennae and palpi 

 pale yellowish-brown : thorax transverse, narrow, not rounded on 

 the anterior edge ; punctures more distinct each side : elytra with 

 numerous impressed punctures gradually becoming obsolete be- 

 hind : feet pale yellowish-brown. 



Length one-tenth of an inch. 



[Vol. V. 



