1806.] 



Plaii of a Mufeumfor Scientific Inquiry. 



CLASS V. INSECTS. 



One ventricle without an auricle ; with 

 antenna. 



Order 1. Coleoptera. Sheath wings 

 like chafers : the upper wing covers are 

 called elytra. Thefe in moll cover the 

 abdomen, as in the chafer ; but in i'ome 

 are partial, as in the earwig. 



2. Hemiptera. Elytra half membra- 

 naceous, half cruftaceous, incumbent on 

 eacli other. Grafshoppers are of this or- 

 der. 



3. Lepidoptera, Four membranous 

 wings, fcaly or powdered. Buttertlics 



4. Neuroptera. Membranous wings, 

 reticulated with nerves ; without fting. 

 Dragon-flies, &c. 



5. Hynienoptera. Four tranfparent 

 membranaceous wings; withftings. Bees, 

 &c. 



6. Diptera. With only two wings ; 

 but with ftlteres or poii'ers inftead of un- 

 der wings. Fhes, gnats, he. 



7. Aptera. Without llings. Spiders, 

 fcorpions, fleas, lobllers, ike. 



CLASS VI. VEilMES. 



One ventricle without an auricle ; a 

 cold colourlefs fanies for blood. 

 Order 1. Intellina. 



2. Mollufca. 



3. Teftacea. 



4. Lithophyta. 



5. Zoophyta. 



80 Genera, 11C6 Species. 



CONCHOLOGY. 



The fhells of the third order of worms 

 are fo various and fo beautiful as to re- 

 quire a diltinft exhibition. 



Synoptical Table of Ttjiaceous Shells. 



ORDER I. MULTIVALVES. 



Chiton. \'alvcs longitudinal. 



Lepas. Valves unequal, fixed by a 

 ftem. 



Pholas. Bival\ c, with acceffory valves 

 behind. 



ORDER II. BIVALVES. 



Mya. Pearl luyas. Hinges with a 

 thick empty tooth. 



Solen. Hinges with diftant lateral 

 teeth. 



Tellina. Ditto with lateral teeth, on 

 one fide empty. 



Cardium. Ditto with lateral diftant 

 and penetrating teeth. Cockle. 



Mactra. Ditto with a middle compli- 

 cated tooth. 



Donax. Ditto with a lateral tooth dif- 

 tant and void. 



Venus. Ditto with teeth approxima- 

 ted. 



Sphondylus. Ditto two teeth fcpara- 

 ted by a fmuU hole. 



Chama. Gaping cockle. Ditto have 

 oblique obtufe teeth. 



Area. Ditto with numerous penetra- 

 ting teeth. 



Oftrea. Ditto without teeth, an ova- 

 ted depreffure. 



Anomia. Ditto without teeth, a linc- 

 ary depreffure on the rim. 



Mytilus. Muflel. Ditto without teeth, 

 with diliinct indenture. 



Pinna. Ditto without teetli, one <i 

 the rims enlarged. 



ORDER III. UNIVALVES. 



With a regular fpire. 



Argonauta. Shell with only one cell, 

 with a regular fpire. 



jNautiUis. With many cells, and a hole 

 of communication. 



Conus. With aperture longitudinal, 

 linear, void of teeth. 



Cyprosa. Aperture ditto, linear, teeth 

 on botli fides. 



Bulla. Aperture ftriated, oblique. 



Voluta. Aperture longitudinal, pillar 

 plaited. 



Buccinum. Small channel on right fide 

 of the aperture. 



Strouibus. Channel on left fide of 

 ditto. 



Murex. Aperture with ftrait channeL 



Trochus. Sliell with aperture ftraitea- 

 ed, nearly four-cornered. 



Turbo. With aperture contra6ted and 

 orbicular. 



Helix. Aperture ftraitened, lunar. 



Nerita. Ditto Itraitened, femi-orbicu- 

 lar, only two fpires. 



ilaliotis. Ear-fliell. Aperture wide, 

 fliell perforated. 



U. Shells uithout regular fpire. 



Patella. Limpet. Conical, fpread out, 

 lying down. 



Duiitalium. Shell awl-{haped, opea 

 at both ends. 



Serpula. Serpentine and tubulous. 



Teredo. Calamitas navium. Shell bor- 

 insj into \vood, bending and penetrating. 



Sabella. Shell made up of fand-grains. 



36 Genera. See Barbut's Genera Ver- 

 mium. 



The Corals concluding (in the 5th or- 

 der,) Uie clafs of Veimes, (o nearly aj)- 

 proach both to vegetables and tbffils, 

 that from thofe to thefe the tranfition is 

 eafy. 



i. Foflils. 



PETRIFACTIONS. 



1. Parts of animals, arranged accord 

 ing to their dalles and orders, in flint 

 lime, clay, tkc. 



2. Ditto of vegetables. 



3. Coal. 



MIKERALOOr, 



