61 



way ; the first three joints are distinct, the fourth minute, 

 nearly globular or nodose, and concealed in a lobed depression 

 of the upper surface of the third joint ; the fifth, or claw joint, 

 is very apparent. 



If my specimen, which I name Opilus ? coccinens, be truly an 

 Opilus, the tarsi are heteromerous, after the conformation of 

 Clerus^ but the first joint is still less discernible. 



I am by no means prepared to reject the admirable eclectic 

 system of Geoffroy and Latreille, and the above observations 

 go to confirm it. The CucujidcB may follow Passalus in the 

 pentamerous group, having some external resemblance to the 

 Lucanidce, and all of tliem ao-reeino- in habit with these and the 

 Tenebrionidce. The larva of Cucvjus clavipes so closely resem- 

 bles that of Dendroides as hardly to be distinguished from it. 



HENTZ TO HARRIS. 



Chapel Hill, March, 1829. 



I have at last discovered Morio Creorgice Say. This Avill j)ut 

 an end to our doubt respecting 740, which, notwithstanding the 

 tarsi, is related to Harpalus. The Morio I have found, though 

 certainly Mr. Say's insect, may be difl:erent from 31. monilicor- 

 nis,- which he quotes, since the latter is said to be an inhabitant 

 of Cayenne, and the description does not fully agree with my in- 

 sect. The body of 3Iorio is somewhat elongated, its habitus 

 being analogous to that of CUvi7ia. The eyes are prominent, and 

 suddenly swollen, the head being strangled behind so as to form a 

 neck narrower than the head. The labrum is deeply bifid, and 

 the labium in its concavity has a small, obtuse tooth, which 

 appears nearly bifid. In 740, the labrum (when dissected) 

 appears scarcely emarginate, and the labium has a long acute 

 tooth. This is sufficient to distinguish it from Morio. The 

 characters given above agree so well with the description given 



