144 [August, 



Sacium Lee. 



Antenna W-articulataf clavatce, clava elongata^ 5-artteulata, articulo 2ndo 

 minore ; thorax caput obtegens ; tarsi angusti ; corpus dlipticumj subtiliter 

 pubescens . 



This genus is precisely equivalent to Clypeaster, as limited by Redtenbacher, 

 (Faun. Austr. ^12.) The name Clypeaster can, however, never be retained for it, 

 as a genus of Echini has long before been know^n under the same name. I have 

 therefore felt myself compelled to propose a new name, which however I will 

 apply only to our native species, leaving to any European Entomologist, who 

 desires it, the task of transferring the species found in his country. I do this the 

 more willingly, as I have no desire to attach my name to species, which I would 

 not recognise if they were placed before me. 



1. S. lugubre, elongato-ellipticum, nigrum, subtiliter parce pubescens, 

 thorace antice utrinque testaceo, elytris minus dense punctatis. Long, 'OS. 



Two specimens ; north shore of Lake Superior. Elongate elliptical, slightly 

 convex, shining black. Thorax semi-elliptical, a little longer than wide, broadly 

 margined, except at the apex ; finely, not densely punctulate, and finely 

 pubescent, marked with a small testaceous diaphanous spot each side of the 

 apex; base very slightly sinuated. Elytra a little wider than the thorax, 

 broadly rounded behind, and a little shorter than the abdomen, distinctly and 

 not densely punctured, and sparsely pubescent : disc slightly impressed at the 

 middle of the suture, which is a little elevated behind. 



2. S. obscurum, elongato-ellipticum, dense subtiliter pubescens, atrum, 

 thorace antice utrinque testaceo, elytris dense subtiliter punctatis. Long. -08. 



North shore of Lake Superior, two specimens. This is very similar to S. 

 lugubre, but the elytra are much more finely punctured. The feet are piceous. 



3. S. amabile, elongato-ellipticum, thorace testaceo medio nigro, elytris 

 subtiliter punctulatis piceis, macula basali, altera ad medium apiceque testaceis, 

 pedibus flavis. Long. '07 "06. 



Junction of the Colorado and Gila rivers. Similar in form to the preceding, 

 clothed with fine prostrate hair. Head yellow. Thorax semi-elliptical, a little 

 longer than wide, sinuate at base, moderately margined on the sides, testaceous 

 with a black vitta reaching from the apex almost to the base. Elytra scarcely 

 wider than the thorax, broadly subtruncate at the apex, finely punctulate, black, 

 with a spot at the base, another transverse one just i ehind the middle and the 

 apex testaceous ; suture not elevated. Beneath black, feet yellow. 



4. S, fasciatum, ellipticum, subtiliter pubescens, thorace testaceo, medio 

 nigro, elytris subtiliter punctatis nigris, fascia pone medium, apiceque flavis, 

 sterno pedibusque flavo-testaceis. Long. '06. ^ 



Clypeaster fasriatiis Say, Journ. Ac. Nat. Sci. 5, 259. 



Middle States, rare. Elliptical, a little broader than the preceding species, 

 finely pubescent. Head yellow. Thorax semicircular, testaceous, dusky in the 

 middle, sides finely margined, base subsinuate. IClytra finely, not densely 

 punctured, shining black, with a fascia behind the middle, posterior lateral mar- 

 gin and the apex yellow, apex almost truncate; pygidium piceous. Beneath 

 dark piceous, metasternum and first joint of the abdomen diagonally testaceous; 

 raesosternum, prosternum and feet yellow-testaceous. 



5. S. lepidum, ellipticum, nigro-piceum, subtiliter pubescens, thorace 

 medio nigro, antice utrinque testaceo, elytris densius punctulatis, fascia angusta 

 pone medium, apiceque testaceis, pedibus obscure rufis. Long. '05. 



One specimen, Habersham county, Georgia. Very similar to the preceding, 

 but the thorax is much darker, being testaceous only each side of the apex. The 

 elytra are more finely and densely punctulate, the testaceous fascia is dark 

 colored and loss distinct; the under surface of the body is uniform black, and 

 the feet are not yellow, but dark rufous. 



6. S. 1 u n a t u m , latius ellipticum, pubescens, nigro-piceum, thorace medio 

 nigro, margine testaceo, elytris subtilissime punctulatis, macula utrinque pone 

 medium lunata, margineque postico flavis ; pedibus piceis. Long. '04. 



