FILED PURSUANT TO RULE 424(B)(3) REGISTRATION NO. 333-18911 NVEST, L.P. PROSPECTUS SUPPLEMENT DATED APRIL 3, 1998, TO PROSPECTUS DATED MARCH 3, 1998, AS PREVIOUSLY SUPPLEMENTED BY PROSPECTUS SUPPLEMENT DATED MARCH 10, 1998 Effective March 31, 1998, New England Investment Companies, L.P. changed its name to Nvest, L.P. ("Nvest") and NEIC Operating Partnership, L.P. changed its name to Nvest Companies, L.P. ("Nvest Companies"). Effective on the same date, the general partner of Nvest (and the managing general partner of Nvest Companies) changed its name from New England Investment Companies, Inc. to Nvest Corporation.