Bullis, H.R. (1967)
Depth segregation and distribution of sex-maturity groups in the marbled catshark, Galeus arae. In P.W. Gilbert, R.F. Mathewson, & D.P. Rall, (Eds.), Sharks, skates and rays. (pp. 141–148). John Hopkins Press, Baltimore

Bullis, H.R. & Carpenter, J.S. (1966)
Neoharriotta carri: A new species of Rhinochimaeridae from the southern Caribbean Sea. Copeia, 1966(3), 443–450

Bullis, H.R. (1962)
A new species of Torpedo from the Florida Straits. Bulletin of Marine Science of the Gulf and Caribbean, 12(1), 61–65

Bullis, H.R. & Struhsaker, P. (1961)
Life History Notes on the Roughtail Stingray, Dasyatis centroura (Mitchill). Copeia, 1961(2), 232–234

Springer, S. & Bullis, H.R. (1960)
A new species of sawshark, Pristiophorus schroederi, from the Bahamas. Bulletin of Marine Science of the Gulf and Caribbean, 10(2), 241–254