14 MANDIBULATA. COLEOPTERA. 



come under my observation : one in the collection of my friend A. 

 H. Haworth, Esq. F. L. S., &c., taken by the Rev. S. Bale, near 



;• another in that of the Rev. F. W. Hope, captured by that 



gentleman near Southend, in the spring of the year 1823 ; a third in 

 the collection at the British Museum, and the fourth in my own : the 

 two latter specimens were procured from Cley on the northern coast 

 of Norfolk (beneath marine rejectamenta) by my friend Dr. Leach, 

 who, after depositing one in the British Museum, kindly supplied 

 my cabinet with the other, which has enabled me to introduce the 

 accompanying figure, for the first time as an indigenous insect. 



Genus IV. — Odacantha, Paykul. 



Palpi short, filiform, the last joint of the external maxillary and labial ovate, 

 slightly truncate: mandibles dentate at the base: tarsi with entire joints. 

 Jintennw with the first joint shorter than the head, the second somewhat ab- 

 breviated, the remainder nearly of equal length : head ovate, produced pos- 

 teriorly : thorax subcylindric, narrower than the head. 



Sp. 1. melanura. Cyanea, elytris testaceis apice nigro-cyaneo, 

 antennarum hasi, pectore pedibusque testaceis. (Long. c. 3 lin.) 



Od. melanura. Payhul. — Steph. Catal. No. 9. — Carabus angustatus. 

 Sowerby. i. pi. 36. 



Green-blue, with the base of the antennae, breast and legs reddish-testaceous, 

 the tarsi dusky, and the tips of the antennae and of the thighs black : the 

 elytra with smooth impressed dots, rufo-testaceous, with a blue-black com- 

 mon spot at the tip. 



Od. melanura principally inhabits the counties of Norfolk and 

 Huntingdon ; in the former county, I believe, it chiefly occurs 

 in the vicinity of Norwich, on the banks of the river Yare — where 

 it has been frequently captured by the entomologists of that city — 

 and in the marshes at Horning and near Fakenham. In the latter 

 county it was found abundantly in the summer of 1825, on the 

 borders of Whittlesea-Mere, by Messrs. Chant and Bentley. My 

 friend Mr. Donovan observes, that it is found in profusion in 

 Cromllyn bog, in Glamorganshire, near Swansea, whence Dr. 

 Leach procured many specimens. 



Although few of the metropolitan collections were supplied with 

 this species, till within these few years, it cannot be reputed a rare, 

 but a local species, notwithstanding the opinions of several ento- 

 mologists to the contrary ; but for my sentiments upon the actual 

 rarity of insects, the reader is referred to the observations imder 

 Dromius meridionalis. 



