OF PHILADELPHIA. 287 



;iny appearance' of spots, lines, or striae, but on the sutural sub- 

 margin is a longitudinal hardly elevated undulation; tip not 

 reaching the tip of the terguiu, truncated, or very obtusely 

 rounded : feet and terminal segment of the venter, paler. [ 181 ] 



Length less than throe-twentieths of an inch. 



[A .species of Ei)uriva Er. — Lec] 



5. N. OEMINATA. — Reddish-brown : elytra, each with four 

 ochreous spots, placed 2, 2. 



Body obscure reddish-brown, a little hairy : thurax widest at 

 the basal angles; lateral margin rufous: elytra striate with ele- 

 vated, acute lines, and with intervening regularly concave 

 grooves ; tip rounded, concealing the extremity of the abdomen ; 

 on each clytrum are four ochreous spots, of which one ia on the 

 humerus: another near the scutel, elongated, approaching the 

 suture, near the tip, and sometimes common ; and two other 

 rounded ones beyond the middle, placed transversely, equal ; ex- 

 terior margin obscure ochreous. 



Length more than one-tenth of an ine h. 



The general color of the elytra is sometimes so similar to that 

 of the spots, that the latter are hardly ob.servablc. 



[Belongs to StcUdota Er. — Lec] 



6. N. 8-MACULATA. — Dark reddi.sh-brown : elytra with four 

 rufous spots placed 1, 2, 1. 



Body very obscure reddish-brown : front with two indentations; : 

 thorax rather large ; lateral margin paler ; elytra striate with 

 slightly elevated lines ; a rufous oblong spot at the middle of the 

 base, a rounded one behind the humerus, another on the sutural 

 margin near the middle, and a fourth a little behind the mid- 

 dle, oval, oblique; tip rounded, concealing the tip of the abdo- 

 men, and rufous. 



Length more than onc-tcnth of an inch. 



The lines of the elytra are more obtuse than those [ 182 ] of the 

 preceding species, the interstitial spaces are not so regularly 

 grooved, and the spots are located differently. I found it in 

 plenty, when on the Arkansa river with Major Long's party. 



[Also a StcUdota. — Lec] 



7. N. UNILINEATA. — Rcddish-brown ; thorax with a line and 

 elytra, each with about five spots, rufous. 



1825.] 



