ENTOMOLOGY. 



671 



Genus XXXVII. Odacantha. Payk. Fabr. Latr. 



Attelabus. Linn. 



Carabus. Oliv. 



Thorax cylindric. Head not lengthened or narrowed 

 behind in any great degree. Mandibles not remarkably 

 long or prominent. Palpi filiform. 



Observation. The structure of the mouth and the 

 general appearance of this genus is that of Labia. 



Sfi. 1. Melanura^ Green-blue ; first joints of the an- 

 tennx, elytra (apex excepted), breast, and feet, pale-rus- 

 ty-red ; thorax distinctly punctured; elytra slightly and 

 widely punctured, the punctures arranged into obscure 

 striae ; knees, tarsi, and antennae (base excepted), black- 

 ish. 



Attelabus melanurus. Linn. 



Odacantha melanura. Payk. Fabr. 



Inhabits Europe. In Britain it occurs near Swansea, 

 and near Norwich in considerable abundance. 



Genus XXXVIII. Agha. Fabr. Latr. 



• Thorax nearly conic. Head much narrowed behind 

 and lengthened. Palpi filiform, the labial ones with the 

 last joint oval-round. 



Observation. In the structure of the mouth, this ge- 

 nus makes a near approach to Lebia, from which it dif- 

 fers in having the last joint of the labial palpi more 

 elongate. Latreille makes two divisions, which wc sup- 

 pose should constitute genera. 



* Fourth joint of the tarsi bifid. 



Sfi. 1. Mnea. Thorax punctate; elytra bidentate. 



Agra xnea. Fabr. 



Agra cajennensis. Latr. 



Inhabits South America. 



** All the joints of the tarsi entire. 



Sfi. 2. Surinamensis. Brunneous; head and thorax 

 black ; antennae intersected with white and black ; elytra 

 striated, with their apex bidentate ; feet red. 



Agra surinamensis. Latr. 



Inhabits Surinam. 



Sfi. 3. Pennsylvanica. Black; elytra red, with punc- 

 tured striae at the base ; marginal spot, another on the 

 suture, and the tip, black ; feet red ; knees black. 



Inhabits Pennsylvania. 



** Lip not prominent ; mandibles small, their internal 

 edge neither toothed or prominent. 



Genus XXXIX. Panag^us. Latr. 



Carabus. Linn. Fabr. Marsh. 



Thorax orbicular. Head narrower than the abdomen, 

 with very prominent globular eyes. Neck distinct. Ab- 

 domen large, nearly quadrate. 



Sfi. 1. Crux-major. Black, deeply punctured; elytra 

 red, with punctured striae, and a cross, and tips black. 



Carabus crux-major. Linn. Fabr. Marsh. Panz. 

 ■'• Panageus crux-major. Latr. 



Inhabits Europe. 



c. Labial and external maxillary palpi with the last 

 joint cylindric-oval. Antennae crooked.- Mandibles short. 



Genus XL. Loricera. Latr. 



Carabus. Fab. Marsh. 



Antennae incurved, the first joints differing in size and 

 in proportion from the others. Mandibles with the back 

 notched and unidentate. Thorax nearly orbicular. Neck 

 distinct. 



Sfi. 1. JEnea. Elytra with punctured striae; the 

 fourth stria from the suture with three foreae. 



Carabus fiilicornis. Fab. Oliv. Marsh. 



Loricera &nea. Lat. Gen. Crust, et Ins. 1. Tab. 7, 

 fig. 6. 



Inhabits France, Germany, and England. 



B. anterior tibiae not notched on their internal edge. 



a. Lip very short, not projecting beyond the first 

 joint of the palpi. External base of the maxillae not 

 remarkably ciliated. Abdomen more or less thick. 



Genus XLI. Cychrls. Fab. Payk. Latr. 



Carabus. De Gecr, Oliv. Marsh. 



Tenebrio. Linn. 



Mandibles narrow, very long, bidentate at their extre- 

 mities. Elytra embracing the abdomen. Labial and 

 external maxillary palpi with the last joint much com- 

 pressed, concave and securiform, or rather spoon-shaped. 

 Thorax somewhat cordate. 



Sfi. 1. Rostratus. Black, elytra sharply punctate-ru- 

 gose. 



Cychrus rostratus. Fabr. Latr. 



Tenebrio rostratus. Linn. 



Carabus rostratus. Marsli. Oliv. 



Inhabits Europe. In England it is rather uncom- 

 mon, but in Scotland it occurs very frequently under 

 stones. 

 ■ Genus XLII. Calosoma. Web. Fabr. Latr. 



Carabus. Linn. De Geer, Oliv. 



Mandibles neither very narrow or long. Thorax 

 nearly orbicular. Abdomen nearly quadrate. Labial 

 and external maxillary palpi with the last joint some- 

 what conic or triangular. 



Sfi. 1. Sycofihanta. Violet-black; elytra gold or cop- 

 pery green, with about sixteen punctured striae on each, 

 the intervals obsoletely intersected transversely, the 

 fourth, eighth, and twelfth from the suture, with some 

 impressed spots. 



Carabus Sycofihanta. Linn. 



Calosoma Sycofihanta. Fabr. Latr. 



Inhabits the European woods. There are but few in- 

 stances of its having occurred in this country, six spe- 

 cimens only being known to us that have been clearly 

 ascertained to be British. Two of these from Ireland 

 are preserved in the collection of Mr Sowerby ; one iir 

 the collection of W. J. Hooker, Esq. of Halesworth ; 

 another in the museum of S. Wilkin, Esq. which was 

 taken in the county of Norfolk with the preceding spe- 

 cimen; a fifth occurred in Devon, near Kingsbridgc, 

 which is now, with another specimen, in the collection of 

 Dr Leach. 



Calosoma Inquisitor of Fabricius is sometimes taken 

 near London, and it has been taken by Dr Leach near 

 Tavistock in Devonshire ; but it must be esteemed a 

 rare British insect. It is said sometimes to occur in- 

 plenty near Windsor, on the white thorn hedges, feeding 

 on the larvae of Iepidopterous insects. 



Genus XLIII. Carabus. Linn. Fabr. Oliv. Latr. 

 Panz. Marsh. 



Mandibles neither very narrow or long. Thorax cor- 

 diform, truncate, and notched behind. Abdomen ovate. 



Obs. As the British species of this genus have been 

 most sadly confused, we shall describe the species, for 

 the purpose of correcting the errors of nomenclature, 

 which Mr Marsham has tended not a little to increase. 



Sfi. 1. Violaceus. Black; margins of the thorax and 

 elytra violet-copper ; elytra finely rugulose, somewhat 

 smooth ; abdomen elongate oval. 



Carabus violaceus. Linn. Fabr. Oliv. Marsh. Latr. 



Inhabits Europe. 



Carabus fiurfiurascens is said to have been taken in' 

 Britain; but we have not been enabled to identify it with 

 certainty. 



Sfi. 2. Catenulatus. Black ; margins of thorax and 

 elytra violet; thorax broader than long, deeply sinar- 



