critical temperature for critical simulation data in this interval of κ . The simulation results were compared with several theories, including the standard formulation of SCOZA (S- SCOZA) as well as a modified version (M-SCOZA) implementing a partial consistency with the virial route, which is disregarded in the standard version. The comparison shows that S-SCOZA slightly overestimates both the critical temperature and the critical density with respect to the simulation results, while the converse is true for M-SCOZA. Nevertheless, the agreement with the simulations is quite good for all the values of κ considered in this paper. Both simulation and theory give a dependence of the critical temperature as a function of the interaction range in substantial agreement with Noro-Frenkel scaling. However, whether the second virial coefficent at the critical temperature B 2 ( T$_{c}$ ) tends to a constant as κ diverges, thereby making Noro-Frenkel scaling hold at arbitrarily short range as in the square-well case [51], could not be established on the basis of our simulation data, and remains to be assessed. PO gratefully acknowledges the financial support of the Instituto Mexicano del Petr´ oleo, under the project D.00476. DP thanks Alberto Parola, Luciano Reatto and Johan Høye for insightful conversation. VI. ACKNOWLEDGMENTS 16 [1] G. Foffi, G. D. McCullagh, A. Lawlor, E. Zaccarelli, K. A. Dawson, F. Sciortino, P. Tartaglia, D. Pini, and G. Stell, Phys. Rev. E 65 , 031407 (2002). [2] F. W. Tavares, and J. M. Prausnitz, Colloid Poliym. Sci. 282 , 620 (2004). [3] C. Caccamo, G. Pellicane, and D. Costa, J. Phys. : Condens. Matter 12 , A437 (2000). [4] D. F. Rosenbaum, A. Kulkarni, S. Ramakrishnan, and C. F. Zukoskia, J. Chem. Phys. 111 , 9882 (1999). [5] J. Bergenholtz and M. Fuchs, Phys. Rev. E 59 , 5706 (1999); J. Phys. : Condens. Matter 11 , 10171 (1999). [6] M. H. J. Hagen and D. Frenkel, J. Chem. Phys. 101 , 4093 (1994). [7] M. Dijkstra, Phys. Rev. E 66 , 021402 (2002).