144 [Auaust, 
Sacrum Lee. 
Antenne 11-articulate, clavate, clava elongata, 5-articulata, articulo 2ndo 
minore; thorax caput obtegens; tarst angusti ; corpus ellipticum, subtiliter 
pubescens. 
This genus is precisely equivalent to Clypeaster, as limited by Redtenbacher, 
(Faun. Austr. 572.) The name Clypeaster can, however, never be retained for it, 
as a genus of Echini has long before been known 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. -08. 
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. 
2.8. 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 8S. 
lugubre, but the elytra are much more finely punctured. The feet are piceous. 
3. 8S. 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 behind the middle and the 
apex testaceous; suture not elevated. Beneath black, feet yellow. 
4. S. fasciatum, ellipticum, subtiliter pubescens, thorace testaceo, medio 
nigto, elytris subtiliter punctatis nigris, fascia pone medium, apiceque flavis, 
sterno pedibusque flavo-testaceis. Long. -06. 
Clypeaster fasciatus 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. Elytra 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; 
mesosternum, prosternum and feet yellow-testaceous. 
5. 8S. 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 less distinct; the under surface of the body is uniform black, and 
the feet are not yellow, but dark rufous. 
6. S. lunatum, 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. 
