The Boston Celtics selected Harvard's senior center Tony Jenkins in the supplementary round of the pro basketball draft yesterday. The NBA champs chose the Crimson captain after seven rounds of the regular draft. The supplementary phase of the draft gives pro teams a chance to pick up local college talent.

The 6 ft. 8 in. Jenkins broke into the first division of great Harvard scorers during the '73-'74 season, surpassing Bill Dennis to grab fourth place on the all-time career scoring list. Jenkins's varsity total, 1077 points, leaves him behind only Dale Dover (1201) James Brown (1242) and Keith Sedlacek (1262).

The senior was named to the second team All-Ivy squad and trailed only team leader Lou Silver in scoring and rebounding, with a 15.5 scoring average and 9.3 rebounds per game.

Jenkins looked strong in several Ivy contests this year, scoring 20 points and adding 12 rebounds in a 75-68 loss to Penn. Jenkins hit for 20 points and 12 rebounds in a 58-51 Crimson victory over Columbia, February 8.

The brawny center journeyed all the way to Honolulu to play in the Aloha classic after the season, a game which is considered a showcase for prospective pro talent.

Under Jenkin's leadership Harvard had its best Ivy record in three years (9-5), although its overall record of 11-13 was the first dip below .500 ball in four years.

In the 1972-73 season Jenkins hit for double figures in all but two games. He went on to lead the Crimson in scoring and finished second in rebounding. Jenkins scored over 20 points seven times with a high of 26 against Brown.

If Jenkins goes with the Celtics, he will join fellow rookies Glenn McDonald of Long Beach, the Celtics' first round choice, and second round pick Kevin Stacom, a guard from Providence. In the third round the Celts drafted Roscoe Pondexter, a forward from Long Beach State.