David, as you and I, and everyone else knows, muster rolls and descriptive lists only show the crew on board a vessel, at a certain point in time (in the case of Union Navy rolls, these are filled out quarterly), and, during the intervening period, crew members were often transferred, sent to hospital, deserted, etc. So, if a descriptive list does not show the name of a sailor, it was obvious that he was either not on board at that particular date, either because he had been transferred elsewhere, had died, or for some other such reason. My web page, which shows the descriptive list, is clearly dated February, 1864, and, as such, it was clear that the name of that sailor was not included because he was not aboard at that date. Here are part of the introductory notes I have at my page:

"The original copy of the descriptive list of the vessel, dated February, 1864, can be viewed at the Eleanor S. Brockenbrough Library, The Museum of the Confederacy, Richmond, Virginia. It consists of five A3 pages listing the names of 143 enlisted members of the crew, in no particular order. The listing includes the name followed by rate in the naval service (which has been noted for the majority of the crew), age, color of eyes, color of hair, height (not included in this transcription), complexion, place of birth, marks (not included in this transcription) and remarks. In the following transcription the names have been arranged in alphabetical order. All the names have been included here, with the exception of two which were entirely illegible, due to the faded script, and have been omitted from the list. Four others are listed in their alphabetical order, where their surnames, or the first letter of the surname can be made out. Although no Confederate States marine personnel are noted, it is possible that some of those whose ratings are not shown, were members of that corps, as it is known that there was a marine guard aboard the vessel shortly after her commissioning."

Many of the documents relating to the Confederate States Navy, as many of us know, were destroyed at the close of the war, and very few such items survive. Unfortunately, this later affected the applications of former CSN sailors, when they attempted to apply for the Confederate pensions, from their respective states, in the U.S.