166 [SEPTEMBER, 
thorace transverso, lateribus et angulis valde rotundatis subtiliter punctulato, 
rufo, vitta lata nigra notato, elytris vix rugosis. Long. +10 
Pennsylvania. Very similar to A. otiosus, but the thorax, besides being 
finely punctulate, has the posterior angles more broadly margined. 
5. A. flavilabris. Malachius flavilabris Say, Journ. Ac. Nat. Se. 5, 
169. Mal. cerulews Randall, Bost. Journ. Nat. Hist. 2, 16. 
One specimen, Vermont. Prof. C. B. Adams. 
6. A.circumscriptus Er. Entom. 107. Malachius cireumsecriptus Say, 
Journ. Ac. Nat. Se. 3, 185. 
Southern States, not rare. 
7. A. cinctus, testaceus, supra niger, subtiliter cinereo-pubescens, parce 
nigro-pilosellus, ore thoracis margine tenui, elytrorum basi margineque omni 
flavis, postpectore nigro. Long. :12. 
Colorado River, California. “Che antenne are piceous, with the base pale; 
the thorax is transverse and rounded on the sides as in the other species. ‘The 
pygidium is black, margined with testaceous; the abdomen has two rows of 
Piceous spots, the posterior tibiw are piceous. 
8. A. difficilis, niger, ore flavyo, thorace lateribus tenuiter flavis, elytris 
margine suturali et externo usque ad medium, apiceque flavis, pedibus basi 
flavis. Long. -138 
Cvulorado River. This species is so similar to the last, in every respect, 
except color, that I hesitate to consider it distinct; the pubescence if it ever 
had any has been entirely removed. Only a single specimen was found. 
9. A. lobatus, flavus, parce cinereo-pubescens, capite postice piceo? 
thorace maculis 3 nigris confiuentibus notato, scutello nigro, elytris nigris 
margine omni, basi suturaque late flavis, subtus niger*pedibus abdominisque 
apice flavis. Long, +07. 
A very pretty little species from the Colorado River, California. ‘The 
antenne are piceous, with the under part of the basal joints pale. A variety 
has the head black, with only the clypeus pale;. the spots of the thorax so large 
as to leave only a narrow yellow margin; the sutural yellow margin of the 
elytra not reaching the scutel, and the posterior feet dusky. It was found at 
Vallecitas, on the ‘western edge of the desert of the Colorado. 
10. A. terminalis Er. Entom. 108. Malachius terminalis Say, Journ. 
Ac» Nat. Se. 5,71. 
Middle and Southern States, 
11. A. secincetus Er. Entom. 109.  Mualachius scineetus Say, Journ. 
Arc. Nat. Se. 5, 170. 
Southern States. Inasmuch as Erichson has adopted this specific name, I 
do not venture to change it. I fear, however, that the German philosopher has 
been as much at a loss as myself to give any meaning to it. It certainly can- 
not be considered as a‘ vox euphonia,’ such as are frequently invented by those 
who rejoice in a limited amount of classic lore. The name given by Dejean 
( Malachius lividus) is certainly infinitely better. 
This species varies in the color of the thorax, cabvidy is sometimes entirely 
black; usually it is yellow with a broad black vitta. 
12. A. granularis Er. Entom. 112. 
‘South Carolina, Dr. Zimmerman. 
13. A. basalis, niger, glaber, nitidus, clypeo pedibusque flavis,. thorace 
subtilissime punctulato, basi flavo-marginato, elytris postice latioribus, vix 
rugosis. Long. 06. 
One specimen, Colorado River, California. 
14. A. melanopterus Er. Entom. 110. 
This species is unknown to me. 
