108 CLASS III. GASTEROPODA. ORDER VI. PULMOBRANCHIATA. 
very strongly dentated on both sides, both on the columella and within | 
the outer lip; the margins are disjoined superiorly, and the lip is simple 
and a little expanded. 
The Scarabi differ materially from the Aduricule in their habits ; they 
are not aquatic, nor even peculiar to marshy places, but are found under 
dry stones, or at the roots of trees, in woods and forests. 
Examples. 
Pl. CLXXXVIII. Fig. 1. 
ScaraBus cLausus, Nobis, Ann. and Mag. Nat. Hist., May 1842, p. 219. 
pat. I. 
Helix clausa, Wagner. 
Helix tomogera, Moricand. 
Auricula clausa, Michaud. 
Tomogerus clausus, Spix. 
Pl. CLXXXVIII. Fig. 2. 
ScaraBus TRIGoNUS, Troshel, Wiegmann’s Archives Nat. Hist., 1840. 
Pl. CLXXXVIII. Fig. 3. 
ScaraBus piicatus, De Férussac, Prod., p.101. Chemn., Conch., vol. ix. 
pl. 136. f. 122 and 1253. 
Auricula plicata, Deshayes. 
Pl. CLXXXVIII. Fig. 4. 
ScarasBus unpatus, Lesson, Voyage de la Coquille, Zoologie, vol. ii. 
p. 336. pl. 10. f. 6. 
Pl. CLXXXVIII. Fig. 5 and 8. 
Scarasus Lesson, De Blainville, Dict. Sci. Nat., pl. 48. p. 32. Lesson, 
Voyage de la Coquille, Zoologie, vol. ii. p. 334. pl. 10. f. 4. 
Pl. CLXXXVIII. Fig. 6. 
ScaRABUS LEKITHOSTOMA, Nobis, Ann. and Mag. Nat. Hist., May 1842, 
220: pls 4. f.:6. 
