13 
Limax gagates Draparnaud hist. p. 122. t. 9. fig. 1 — 2. 
— — Ferussac hist. p. 75. t. 6. fig. 1 — 2. 
— — Lamarck edit. Deshayes T. 7. p. 721. 
— agrestis Lowe primit. p. 39? 
Habitat in Madera, ubique vulgaris. 
A littore maris ad altitudinem usque 3000 ped. hanc speciem observavi, imprimis 
autem in regione castaneae vescae, ubi in gramineis umbrosis numerosissime degit: ra- 
rior occurrit altius, in sylvulis vaccinii maderensis. Animal valde iners interdiu gregarie 
sub lapidibus remanet, ubi contracto corpore et carina acuta, formae tectuli haud dissi- 
mile, reperitur. 
TESTACELLUS. 
Testa parvula, convexiuscula , elongata, extus rugosiuscula, intus margaritacea; 
anfract. vix 1^. 
Animal cylindraceum, antice attenuatum; discus longitudinaliter corpori adnatus; 
clypeus nullus; apertura respiratoria supra extremitatem posticam, testa obtecta; pallium 
breve; tentacula retractUia 4, majora superne oculifera. 
^ 1. Testacellus lialiotideus Fmre-Biguet. 
Tab. 1. Fig. 6 — 8. 
Testa ovato -oblonga, crassiuscula; apertura magna, ovata. 
Diam. maj. 9^, latid. 5^ millim. 
Testacellus haliotideus Faure-Biguet in: Bulletin Soc. philom. Vol. 3. n. 61. p. 38. t. 5. f. 2. 
' — — Ferussac hist. p. 94. t. 8. fig. 5 — 9. 
— — Lowe primit. p. 40. 
— — Lamarck edit. Deshayes Tom. 7. p. 726. 
Testgcella haliotidea Draparnaud hist. p. 121. t. 8. fig. 43 — 48. t. 9. fig. 12 — 14. c. aiiim. 
— — Webb et Berthelot in: Ann. d. scienc. nat. T. 28. p. 307. 
Habitat in Madera. 
/ a. Testacellus Maugei Fer. 
Tab. 1. Fig. 9—11. 
Testa elongata, tenuiuscula, apice attenuata; apertura magna, elliptica. 
Diam. maj. 8, min. 4 millim. 
