1852.] 67 



Creek Boundarj^. This species is allied to C. tricolor, nemoralis, vicinus, &c., 

 but the punctures on the thorax are very small and alnnost obliterated. The 

 labrum is wide, scarcely emarginate ; the head is bright blue, very finely punc- 

 tulate and wrinkled; the thorax is blueish, wider than long, at the apex nar- 

 rower than at the base; very much rounded on the sides anteriorly ; the base 

 is truncate ; the angles obtuse, not rounded ; the disc scarcely convex, finely 

 and very obsoletely punctured; the basal impressions long and shallow. The 

 elytra are wider than the thorax, dull black; the striae are deeply punctured 

 nearly to the tip ; the interstices are slightly convex, and very finely punc- 

 tured. The first three joints of the antennae, the palpi and the legs are ferru- 

 ginous. 



6. Euryderus zabroides Lee. An. Lye. 4, 152, tab. 8, fig. 5. 

 The genus Eurydera Lap. seems to be founded upon good characters, although 



it was for a long time refused by entomologists. Its adoption requires a change 

 of name for my genus, and in allusion to the singular form of .the anterior tibiae, 

 I give Nothopus as the new generic name. 



7. Calosoma externum. Carabus externns Say. J. Ac. Nat. Sc. 3, 

 150: Lee. An. Lye. 4, 445. Calosoma longipemie Dej. Sp. Gen. 5, 568. This 

 insect after all, seems to be a genuine Calosoma, by the structure of the antennae 

 and palpi. I have seen specimens without wings, but extensive observation has 

 convinced me this is to be considered as accidental. Its form is more similar 

 to Carabus than any other species of Calosoma. 



8. Euphoria melancholica Schaum. An. Ent- Soc. Fr. 2d ser. 2, 

 374. A specimen from New Mexico has the thorax and elytra much less punc- 

 tured than the Louisiana specimens, but I can find nothing worthy of being con- 

 sidered as a specific difference. 



9. Eleodes s u 1 c ata, nigra, thorace parvo, ovato, parce punctulato, 

 basi truncato, elytris ovalibus apice acutis,dorso depressis, postice valde declivi- 

 bus, profunde sulcato-striatis, sulcis granulatis, femoribus anticis breviter ar- 

 matis. Long. '75 -97. 



A fine species, abundant in every part of Missouri Territory and easily dis- 

 tinguished by its sulcate elytra. Head punctured. Thorax a little wider than 

 long, rounded on the sides, narrowed behind ; moderately convex, sparsely 

 punctured, anterior angles prominent acute, base truncate. Elytra more 

 than twice as wide as the thorax, elongate oval, depressed on the disc, 

 deflexed at the apex, which is acute ; the lateral margin obtuse ; striag broad, 

 deep and obtuse, rough with elevated points ; interstices not wider than the 

 striae, convex, marked each with a single series of distant punctures; epipleurae 

 less deeply striate than the disc. Anterior thighs armed with a short, sharp 

 tooth. The female differs by having the elytra broader and less acute at 

 the tip. 



10. Myodes scaber, ater confertim punctatus, vertice elevato, tho- 

 race antrorsum angustato, utrinque truncato, medio obsolete carinato, elytris 

 parce punctatis, abdomineque flavis. Long. '35. 



A very imperfect specimen from the Creek boundary, which is distinguished 

 from another Southern species having a yellow abdomen, by its much larger 

 size, more punctured head and thorax, and immaculate black feet. I am in- 

 clined to believe that the color of the abdomen is a sexual character as in the 

 European M. subdipterus. 



11. AcmcEodera variegata, cupreo-aenea, pilosa, thorace brevi 

 confertissime punctato, macula laterali lutea, elytris basi minus convexis, fasciis 

 irregularibus luteis anterioribus confluentibus. Long. '35. 



The specimen of Dr. Woodhouse being imperfect, ni)'" description is taken from 

 some collected by Mr. Fendler near Santa Fe. 



Body coppery-bronzed, with erect brown hair. Thorax very densely and 

 coarsely punctured, three times as wide as long, sides rounded anteriorly, al- 



10 



