A bird tweeped and twittered on a thistle by the side of the trail.

Moses forbore to speak of angels, and of things invisible, and incorporate.

As is the case with mesopsammic representatives of other major taxa, interstitial nemertines constitute a unique biological grouping recognizable by specializations that are characteristic of mesopsammon (see Swedmark, 1964, for review of the nature of interstitial organisms).

Capryol 90 (propylene glycol monocaprylate) and Transcutol HP (purified diethylene glycol monoethyl ether) were kindly donated by Gattefosse.