Tropical and subtropical, sometimes drifts far northward with the Gulf Stream.
- Bigelow, H. B. and Schroeder, W. C., 1953; Pietsch, T. W. and D. B. Grobecker, 1987; B?e, J. E. and C. C. G. Chaplin, 1993; Claro, R., 1994; Robins, C. R. and G. C. Ray, 1986.
