BY C. HEDLEY. 695 



a century in obscurity, appears the rightful heir to the title. In 

 the following year, Bolten proposed a binomial for some excellent 

 figures published polynoraially by Chemnitz. The generally 

 accepted name by Lamarck was not advanced till 1801. 



The genus-name Lingida appeared rather irregularly as a 

 heading for a single species on a plate in the Encyclopedic 

 Methodique. If this is ruled out, then we shall have to fall 

 back on Bolten's Pharetra. 



The species have been discriminated usually from dry and 

 probably distorted material. Little attention has been given to 

 change in appearance in dilferent stages of growth. It may be, 

 therefore, still a matter for investigation whether the names 

 assigned to Australian forms, L. tumidula Reeve, L murphiana 

 Reeve, L. exusta Reeve, and L. hirundo Reeve, represent distinct 

 species, geographical races, or growth-forms of a single species. 



L. anatina was recognised from Moreton Bay by Dr. E. von 

 Martens. Some fifty years ago, Angas gathered, in Middle 

 Harbour, a species of Lingida which he determined as L hians. 

 Brazier has noted, in Whitelegge's List, additional localities for 

 this. 



A Revision of Australasian Tugalia. 



Of Tugalia, there are two species in New Zealand, and two 

 others in Australia. Confusion has enveloped this small group; 

 for under the name of T. parmophoidea, or its various renderings, 

 each of the other species has in turn been included. 'J'he 

 identity of the genotype has thus been obscured. Monographs 

 in the Thesaurus and Conchologica Iconica, by transfer of names 

 to wrong genera, species, and localities, by omission, and dis- 

 union, constructed a labyrinth of error which has entangled 

 conchologists for half a century. 1 hus, in 1867, Emargimda 

 ossea Gould, from Fiji, was substituted for the totally different 

 T. parmophoidea from Sydney by Angas. In 1883, Brazier 

 re-distributed the names of three species incorrectly. As late 

 as 1903, Pritchard & Gatliff reflected current opinion by pre- 

 senting, under the head of T. parmophoidea, a tangled, hetero- 

 genous mass of intermedia, elegans, tasmnnica, and australi$. 



