Bathygobius casamancus (Rochebrune, 1880)

Brito, A. & Miller, P. J., 2001, Gobiid ® shes from the Cape Verde Islands, including two new species of Gobius (Teleostei: Gobioidei), Journal of Natural History 35 (2), pp. 253-277 : 254

Bathygobius casamancus (Rochebrune, 1880)

Material. Cape Verdes: 7 ll, 21.5 1 5.8 to 59 1 19 mm, and 9 mm, 27.5 1 7 to 39 1 9.5 mm, Baia das Gatas, c. 10 km E. of Mindelo, Ilha de SaÄo Vincente, spring

1986, P. Wirtz; 1, l31.5 1 7.5 and 2 mm, 27.0 1 7 and 27.5 1 7 mm, Ilha de SaÄo Tiago,

1993, U. Schliewen; 1, l40 1 10 mm, and 3 juveniles, 21.5 1 6 to 24.5 1 6 mm, Quebra

Canhela , Ilha de SaÄo Tiago, 30 December 1998, and one specimen, Tarrafal, Ilha de SaÄo Tiago, October 1998, A. Brito .

Associated material. Senegal: 7 ll, 38 1 9 to 53.5 1 12 mm, 18 mm, 27 1 7 to 61.5 1 14.5 mm, and 7 juveniles, 17.5 1 4.5 to 40 1 9.5 mm ( RMNH CANCAP collections) , Cape Verde Peninsula, 1982, F. C. Roest .

Generic and speci W c identi W cation. Miller and Smith (1989) discuss the generic position of this species and its identi®cation in previous material from the Cape Verdes where it was noted from Baia das Gatas, Ilha de Sa Äo Vicente, by Paes da Franca and Vasconcelos (1962). Comparison of the island material with that from the adjoining Cape Verde peninsula (table 1) and other West African areas ( Miller and Smith, 1989) indicates no major insular di OEerentiation.

Biology. This species has been found in high level tide-pools and also sublittorally in 2±4 m at an open sand /rock boundary (U. Schliewen, pers. comm.).

D 2 10 11 n xÅ SD SE

SV 12 4 16 10.25 0.45 0.11

DS 12 1 13 10.08 0.28 0.08

P 17 18 19 n xÅ SD SE

SV 4 20 6 30 18.07 0.58 0.11

DS 8 31 6 45 17.96 0.56 0.08

LL 35 36 37 38 39 n xÅ SD SE

SV 6 8 10 3 ± 27 36.37 0.97 0.19

DS ± 10 7 3 2 22 36.86 0.99 0.21

PD 14 15 16 17 18 19 n xÅ SD SE SV 1 2 2 3 1 ± 10 16.30 1.34 0.42 DS ± 3 0 5 3 2 13 17.08 1.38 0.38