Such summaries are indicated in the indexes by use of a double colon, "::". Surirella :: see alpina, amphioxys, angusta, apiculata, .... (Calvados) France :: see Arromanches-les-Bains, Asnelles, Aubigny, .... Sweden :: see Alvsborg, Gävleborg, Göteborg och Bohus, .... DIATOMISTS INDEX: The diatomists index includes collectors, annotators, slide preparers, and other persons (or expeditions) that were explicitly mentioned in association with a specimen, except for those persons cited as authors of components of the scientific name. The index merely refers the user to an exsiccata and a specimen number. The complete record of information associated with that specimen number has not been reiterated here. EXSICCATAE SERIAL NUMBER INDEX: A complete list of all taxa reported in any one numbered specimen from an exsiccata can be ascertained by examining the specimen's appropriate geographical locality listing. This index presents the page number within the geographical locality index on which can be found the records for each numbered exsiccata specimen. The format of entries in this index is: [exsiccata specimen number]/[page number in this work], [page number in this work], ...; [next entry] .... ANNOTATIONS & NOTES: Annotations are conspicuous in that they do not agree in form with either the tripartite format described for records or the double-colon-signalled hierarchical summaries. All annotations are basically referential and employ the word "see", and almost all end with a single colon followed by a reference to exsiccatae to which the annotation is intended. I have made liberal use of square brackets, where I have inserted information not readily derivable from the exsiccatae, and of question marks, where I have been uncertain that I have resolved discrepancies and allocated information accurately.