LETTER 1 filename1.txt Via Facsimile and U.S. Mail Mail Stop 6010 August 12, 2005 Mr. Stephen R. Davis Chief Business Officer Neurogen Corporation 33 Northeast Industrial Road Branford, CT 06405 Re: Neurogen Corporation Form 10-K for Fiscal Year Ended December 31, 2004 File No. 000-18311 Dear Mr. Davis: We have completed our review of your Form 10-K and have no further comments at this time. Sincerely, Kevin Woody Branch Chief