62 MATERIALS TOWARDS A HISTORY 



235. S. UNICOLOR. 



Slender, black, punctured; a fovea near the posterior extremity of the dorsal line; beneath, olivaceo-sericeous. 

 5'" long; 1 wide. Pennsylvania. 



STENURA, Dejecm. 

 23G. S. emarginata, F., ii. 356. Oliv., pi. 3, fig. 6. 



Black; elytra rufous, golden sericeous, apex black, separately emarginate. 14'" long; 4 wide. Bost. Coll., No. 723. 



Inhabits Carolina, appearing in July — August. The Reverend D. Ziegler has a speci- 

 men taken in Pennsylvania. According to Fabricius, it is a native of Cayenne. 



237. S. OBLITERATA, Klllg. 



Obscure brown ; thorax olivaceous hairy; elytra separately emarginate, obscure yellow, with a small, indistinct, 

 black line near the base above, and another on the margin ; a wide, transverse band at the middle, interrupted at 

 the suture, and another posterioi one uniting with the dull testaceous of the apex ; feet yellow, posterior femora 

 and tibia; tipped with black. 7" long; 2i wide. Oregon. Cab. Le Conte. 



238. S. zebrata, Fabr., ii. 364 — nitens? Forster, Cent. Ins., 45 — quagga, Germar. 



Black, golden sericeous, with four bright-yellow, elytral fasciae; feet yellowish, antennae yellowish-brown; 

 palpi and head, in front of the antenna 1 , yellow. 0'" long. Inhabits from Massachusetts to Pennsylvania, in May 

 and June. Boston Collection, 597. 



239. S. zebra, Oliv., pi. 3, fig. 33. 



Closely allied to the preceding, but the region of the mouth and antennae are black, 

 the latter dentate, (as required by Olivier's description;) the pronotum is more roughly 

 punctured, the elytra visibly scabrous, with the basal fascia more acutely curved, and the 

 apex very obliquely reduced from the suture to the external angle. 



5'" long. Inhabits Carolina in April — July. Boston Coll., 595. 



240. S. 8-NOTATA. 



Black ; elytra yellow, with four black macular, the third common ; shoulder, feet, and apex of the abdomen 

 brownish-yellow. 5'" long ; lj wide. Alabama. 



Head and pronotum olivaceous hairy; palpi yellowish, terminal articulations of the maxillaries black; (antenmr 

 dentate :) prothorax transverse, suddenly narrowed anteriorly : elytra slightly obliquely truncate, tipped with 

 black ; a basal and medial macula exteriorly, and another post-medial one narrowing forwards to the suture, along 

 which it extends in a narrow line to near the base. 



241. S. vei.utina, Oliv., pi. 3, fig. 32. Mcls. Cat., S34. S. aurigera, Newman. 



Black, olivaceo-sericeous ; elytra dull rufous, with four yellowish spots or bands, tip separately emarginate : 

 feet yellowish rufous, venter reddish, either entirely or at the tip. 6'" long. 



242. S. fugax, Fabr., ii. 359. 



General characters of the preceding. Elytra with the basal macula reduced in size, 

 the second and third wanting, and the apical one evanescent; apex more obliquely nar- 

 rowed from the suture; antenna' dentate. 4 — 5"' long. Inhabits Pennsylvania. 



This species bears nearly the same relation to velutina that zebra does to zebrata, and 

 it is possible that the denticulation of the antenna; is a sexual distinction. 



