Donald H. Colless

Phylogenetics: The Theory and Practice of Phylogenetic Systematics.

Method and apparatus for locating and correcting faults in machinery comprising fault detector indicators at the fault area, a viewer for fault correcting instructions, means to correlate the indicators with the viewer. The apparatus further includes recorded audio instructions keyed to said indicators for aurally leading plant personnel through a maintenance operation. The apparatus further including a monitor for counting and timing the duration of the faults.

Archaeochlus Brundin: a midge out of time (Diptera: Chironomidae)

Abstract. Archaeochlus, a plesiomorphic genus of Podonominae (Chironomidae), is revised and two new species (biko from Namibia and brundini from southwestern Australia) described. The systematic status of the genus and the tribe Boreochlini is reassessed. Biogeographic evidence, sustained by a fossil record, dates the genus at least to the Upper Jurassic. The ecology of early Chironomidae is suggested to be eurythermic and hygropetric rather than cold stenothermic in lotic waters.

Taxonomic Congruence — A Reanalysis

This paper concerns the issue of whether classificatory methods used in numerical cladistics or in numerical phenetics have greater stability when sampling different classes of characters (such as morphological versus electrophoretic, or larval versus adult characters). Mickevich (1978a,b) investigated 8 methods for 9 different data sets. Some questions with the design and methods used in this study were raised by Rohlf and Sokal (1980). In a rejoinder Mickevich (1980) modified some of her methods and presented some new results. The purpose of the present paper is to present some results of a reanalysis of these data. A more comprehensive paper is in preparation.

Wagner Trees in Theory & Practice

The idea that the best evolutionary tree is the shortest one has been independently advanced on at least three occasions. Its first explicit statement seems to have been in the brief mention by Edwards & Cavalli-Sforza (1963), which was followed up by several authors culminating in Thompson (1973). Farris (1970) has traced, and greatly advanced, a second development of the idea, commencing in methods originated by Prof. H. Wagner and reviewed in Wagner (1961). The third independent development is found in the detailed numerical treatment by Camin & Sokal (1965), who introduced the term ‘evolutionary parsimony’. We could add here, too, yet a fourth development in which the parsimony criterion is implicit: the numerical approach of Throckmorton (1968), credited by him largely to the taxonomic methods of A. H. Sturtevant. These and similar approaches have been further developed by, inter alia, Hendrickson (1968), Estabrook (1968), Fitch (1971), Farris (1972, 1973, 1981), Fitch & Farris (1974), Moore et al (1973), Marchi & Hansell (1973), Beyer et al. (1974), Dobson (1974), Waterman et al. (1977), Prager and Wilson (1978), Klotz and Blanken (1981), and Swofford (1981). We must also note the important studies by mathematical psychologists (e.g., Carroll 1976, Sattath & Tversky 1977, Cunningham 1978), who, for quite different reasons, have taken an interest in trees of a related, if not identical kind.