diff --git a/syndicate/dataspace.rkt b/syndicate/dataspace.rkt
index 0407ab7..e2882a1 100644
--- a/syndicate/dataspace.rkt
+++ b/syndicate/dataspace.rkt
@@ -79,7 +79,6 @@
 
 (struct dataspace ([next-id #:mutable] ;; Nat
                    routing-table ;; Skeleton
-                   actors ;; (MutableHash ActorID Actor)
                    ;; v TODO: Caches have to be bags, not sets; once
                    ;; this change is made, can I avoid keeping a bag
                    ;; of assertions in the dataspace as a whole?
@@ -203,7 +202,6 @@
 (define (make-dataspace name boot-proc)
   (dataspace 0
              (make-empty-skeleton)
-             (make-hash)
              (make-bag)
              (make-dataflow-graph)
              '()
@@ -223,7 +221,6 @@
                            (make-vector priority-count (make-queue))
                            (make-queue)
                            (set)))
-  (hash-set! (dataspace-actors ds) the-actor-id the-actor)
   (for [(a initial-assertions)]
     (match (bag-change! (dataspace-assertions ds) a 1)
       ['absent->present (add-assertion! (dataspace-routing-table ds) a)]
@@ -397,7 +394,6 @@
 
 ;; Abruptly terminates an entire actor, without running stop-scripts etc.
 (define (terminate-actor! ds the-actor)
-  (hash-remove! (dataspace-actors ds) (actor-id the-actor))
   (push-script! ds the-actor
                 (lambda () (for [(a (actor-adhoc-assertions the-actor))] (retract! the-actor a))))
   (let ((f (actor-root-facet the-actor)))