Dr. Sérgio Ávila (MSc.)
Secção de Biologia Marinha
Departamento de Biologia
Universidade dos Açores
9500 Ponta Delgada
Portugal

Dear Marien:

I have taken the biogeographical provinces from literature and, as far as I
am aware, they have been defined by a combination of endemism rate, % of
common species and also by geological or geographical features that provide
convinient points of demarcation for the establishment of the boundaries
between provinces.

I have used the following literature:

1) Nova Scotia, Carolinian and Virginian provinces: VALENTINE, J. W., 1977.
Biogeography and Biostratigraphy. In: Kauffmann, R.. G. & J. E. HAZEL
(Eds.). Concepts and Methods of Biostratigraphy: 143-162.
2) Carolinian, Virginian and Tropical provinces: ENGLE, V. D. & J. K.
SUMMERS, 2000. Biogeography of benthic macroinvertebrates in estuaries
along the Gulf of Mexico and Western Atlantic coasts. Hydrobiologia, 436:
17-33.
3) Tropical province: HOEK, C. VAN DEN, 1975. Phytogeographic provinces
along the coasts of the northern Atlantic Ocean. Phycologia, 14(4):
317-330.
4) Brazilian province: FLOETER, S. R. & A. SOARES-GOMES, 1999.
Biogeographic and species richness patterns of Gastropoda on the
southwestern Atlantic. Revista Brasileira de Biologia, 59(4): 567-575.

Thank you for the comments.

Sérgio