268 MODERN CLASSIFICATION OF INSECTS, 



The exotic genera scarcely present any material characters for ob- 

 servation ; the Brazilian genus Stigmatium cicindeloides Hope ( Grif- 

 fith, An. K.) having the aspect of a Cicindela, with very slender 

 antennae and prominent eyes, and Enoph'um (Chariessa Perty, placed 

 by that author amongst the Chrysomelidse), and having the antennge 

 terminated by three large internally produced joints, being the most 

 interesting. The splendid Brazilian Opilus auripennis Hope ( Zool. 

 Trans, i. pi. VS. f. 5.), appears to form a distinct subgenus*, having 

 the antennae similar to Enoplium ; but the thorax is very different, and 

 the tarsi are completely tetramerous, whilst some species (genus 

 Stilpnonotus Gray, An. K.) ai*e as perfectly heteromerous, the four 

 anterior tarsi being 5-jointed, and the posterior pair 4-jointed. 



The seventh family, Ptinid^ t, corresponds with the Linnaean genus 

 Ptinus, and comprises a rather extensive group of insects of small 

 size but of very destructive habits. The body is of a firm consist- 



* The Enoplium viridipenne Kirby appears congenerous. 



f BiBLioGR. Refer, to the Ptinid^e. 

 Mutter. (Naturforscher St. 20.) 

 Carpenter, in Gill's Technological Repository. 



Dufour, in Annales Sc. Nat. 1828, (internal Anatomy of Anobium Striatum). 

 Entoniologische Hefte. (Monograph of Dorcatoma. ) 

 Ratzehvrg. Die Forst-Insecten, pi. 2. 

 Cen/ia'.-, in Neu. Schrift. Naturf. Gesellsch. Halle, 1811, vol. i. — Ditto, Mag. 



der Entomol. vol. iii. and iv. — Ditto, Insect. Spec. Nov. 

 Nov. Act. Curios, vol. xvi. Bulletin Soc. Nat. Moscow, vol. vi. 

 Falderman, in Nouv. Mem. Soc. Moscow, vol. iv, 

 Sturm. Catal. Meiner Ins. Samml. 

 LatreiUe. Mem. on Anobium Striatum in Rapport de Trav. Soc. Philomat. 



1799-1800. 

 Schneider. Neustes Blagazin. 5 Hefte. Svo Stralsund, 1791-1794. (Kugellan 



on Serrocerus. ) 

 Guirin. Icon. Regne Animal — Mag. de Zoologie, pt. i. (Chevrolat on Dryophilus.) 

 Illiger. Mag. der Entomol. vol. vi. 

 Thunherg, in Act. Upsal, vol. iv. and v. 

 Charpentier. Horas Entomol. 

 Sturm. Deutchslands Fauna, vol. xi. 

 Stephens, Fabricius, Olivier, Gyllenhall, ^c. 



