ENTOMOLOGY. 



687 



Cubdiviaio7i 1. 



Labrum prominent even beyond the clypcus. Maxillae 

 interiorly armed with a horny hook, simple or bifid. Bo- 

 dy nearly globular or ovoid. Elytra tumid, embracing 

 the sides of the abdomen. 



Genus CLV. yEoiALiA. Latrcillc. 



Aphodius. Panzer, Illiger. 



Psammodius. Gyllcnhall. 



Antenna distinctly longer than the head ; composed 

 of nine joints, the first of which is cylindrjc and a little 

 hairy. Body nearly globular. Maxillae with a bifid hook. 



Sfi. 1. Globosa. Black, shining; head granulated; 

 elytra striated, impunctate. 



Afihodius globosus. Illiger. 



Psammodius globosus. Gyllcnhall. 



JEgialia globosa. Latreille. 



Inhabits the sandy shores of the sea. 



Genus CLVI. Trox. Fabricius, Olivier, Lamarck, 

 Latreille. 



Soarabveus. Linn. Marsham, Gcoffroy, Dc Geer. 



Antennae scarcely longer than the head ; composed of 

 ten joints, the first obconic and very hairy. Body ovoid. 

 Maxillae with a simple hook. 



Sfi. I, Sabulosus. 



Trox sabulosus. Fabricius, Latreille. 



Scarabaus sabulosus. Linn. 



Inhabits sandy places. 



Subdivision 2. 



Labrum not projecting beyond the clypcus. Body 

 not globose. Elytra not embracing the sides of the ab- 

 domen. 



a. Labrum entirely hidden. Clypcus triangular. 

 Maxillae coriaceous, or horny ; conic, or triangular. 

 Mouth very hairy. Scutellum very small. (Colours 

 dark.) 



Genus CLVII. Sinooendron. Fabr. Latr. Don. 



Scarabaus. Linn. De Geer, Olivier. 



Lucanus. Marsham. 



Antennae, with the laminated club not capable of being 

 folded; the lamellae very short, resembling the teeth 

 of a saw. Body cylindric. Maxillae coriaceous, bilobate. 



Sfi. \. Cylindricum. Black, shining, impressed- punc- 

 tate, cicatriculose ; the punctures umbilicated, the um- 

 bilici perforate. (Male with a conic-compressed horn ; 

 the female with a short horn on the head.) 



Stnodendron cylindricum. Fabr. Latr. Donovan. 



Scarabaus cylindricus. Linn. De Geer, Olivier. 



Lucanus cylindricus. Marsham. 



Inhabits old trees, especially the ash. Is very abun- 

 dant near Cheltenham, and near Plymouth, in decaying 

 ash trees. 



Genus CLVIII. Oryctes. Illiger, Latreille. 



Scarabaus. Linn. Geoffroy, De Geer, Olivier. 



Geotrui'es. Fabricius. 



Antennae with the lamella; of the club long and pla- 

 tatile. Body ovoid, convex. Mandibles with their ex- 

 ternal edge without teeth or folds. Maxillae coriaceous, 

 one-lobcd. Thorax with the sides dilated, and a little 

 rounded. 



Sfi. 1 . JVasicornis. Fuscous-castaneous, shining ; head 

 with one horn ; elytra polished finely, and distantly 

 punctured. 



Oryctes nasicornis. Illiger, Latreille. 



Scarabaus nasicornis. Linn. 



Geotrufies nasicornis. Fabr. 

 Inhabits Europe, in old wood. 

 Genus CLIX. Piuleurus. Latr. 

 Scarabjeus. Linn. Olivier. 

 Geotrupes. Fabr. 



Antcnnx with the lamellae of the club long and pli- 

 catile. Body ovoid, depressed. Mandibles with their 

 external edge without teeth or folds. Maxillae corneous, 

 dentatcd. Thorax with its sides dilated and rounded. 

 S/i. 1. Dydimus. 

 Gcotrufics dydimus. Fabr. 

 P/iileurus dydimus. Latr. 

 Genus CLX. Geotrupes. Fabr. 

 Scarabaus. Linn. Oliv. Latr. Lam. 

 Antennae with the club composed of long, plicatile 

 lamellae. Body ovoid, convex. Mandibles with their 

 externa] edge crcnulatcd or toothed. Maxillae corneous, 

 dentated. 



S/i. I. Punctatus. 

 Geotru/ies fiunctatus. Fabr. 

 Scarab aus fiunctatus. Latr. 

 Inhabits southern Europe. 



b. Labrum with the anterior edge apparent. Clypcus 

 quadrate. Scutellum large. (Colours various and gay.) 

 * External edge of the mandibles prominent, depres- 

 sed, with the sides cutting, crenulated, or sinuat- 

 ed. (Body short, ovoid, or somewhat orbicular: 

 Scutellum generally large : Thorax short, broad : 

 Sternum produced into a point anteriorly.) 

 Genus CLIX. Hexodon. Oliv. Fabr. Lam. Lat. 

 Mandibles with their points strongly three-toothed. 

 Body nearly orbicular. Elytra with their exterior side 

 dilated and channelled. Antennae ten-jointed, with a 

 small oval club composed of three lamellae. Feet slen- 

 der. Tarsi with very small nails. 

 S/i. 1. Reticulatum. 

 Hexodon reticulatum. Latr. 

 Inhabits Madagascar. 

 Genus CLXII. Rutei.a. Latr. 

 Sc.arab.eus. Linn. De Geer. 

 Cetonia. Fabr. 

 Melolontiia. Fabr. 



Body more or less ovoid. Elytra with their cxtcrio; 

 side not dilated or channelled. Antennae with their club 

 large and oblong, composed of three lamellae. Mandi- 

 bles with their points having three little teeth. Feet 

 strong. Tarsi with strong nails. 



* Tarsi with undivided nails ; the nails of unequal size. 

 Sfi. 1. Punctata. 

 Melolantha fiunctata. Fabr. 

 Putela fiunctata. Latr. 

 Inhabits America. 



** Tarsi with undivided equal-sized nails. 

 Sfi. 2. Lineola. 

 Cetonia lineola. Fabr. 

 Putela lineola. Latr. 

 Inhabits America. 

 *** Tarsi with one nail divided, and another bilid, 



(Scutellum very large.) 

 Sfi. 3. Chrysis. 

 Cetonia chrysis. Fabr. 

 Putela chrysis. Latr. 

 Inhabits America. 



** Mandibles not, or but little, prominent, without 

 any crcnatures or sinuosities remarkable in their 

 outer edge. (Body ovoid-oblong : Scutellum small, 

 or moderately sized) 



