62 THE LINGULIDZ OF THE QUEENSLAND COAST. 
almost in a straight line. The posterior pallial sinuses are 
relatively large branching vessels which may be gorged with 
purplish blood. A well defined visceral vessel is also at 
times readily recognisable, its appearance reminding one 
of that figured by Hancock (pl. 64, fig. 1). 
This latter condition was not observed in any of our 
specimens of L. bancrofti. The form and position of the 
canals in the arms (text-figure 8) is different from that 
described for the last named species. In L. murphiana 
the anterior canal, as seen in section, is not circular, while 
the posterior canal is less extensive, and the brachial fold 
is rather thin and narrow. 
The habits of LZ. murphiana as far as we know them, 
resemble those of LZ. anatina and other littoral species of 
Lingula. 
Relationships :—Reeve (1859) remarked “‘ whether 
this should be regarded as an Australian form of Lingula 
anatina or as a distinct species, it is certain that the differ- 
ences are obvious and constant.”? He went on to say that 
all the specimens examined by him were distinguished from 
L. anatina which is common in the Bay of Manila, Philip- 
pine Islands, by a more square outline and a peculiarly 
coppery-red tone of colour. 
Davidson (1888, p. 216) referred to the shell being 
wider in comparison to its length, thicker and differing in 
colour. He thought it nearly allied to L. tumidula and in 
a letter to Brazier (Davidson 1879, p. 402) had doubted 
whether the two species were really distinct, suggesting 
that as they occurred in the same Jocality and were of the 
same colour, L. twmidula might be only a very wide variety 
of L. murphiana. As pointed out by us when dealing 
with the former, there is no resemblance either in colour, 
consistency of shell, or shell proportions ; and, moreover, 
they do not occur in the same locality as far as we know, 
though the name ** Moreton Bay ”’ was stated as the locality 
in each case. We have mentioned elsewhere the likeli- 
hood of confusion between Moreton Bay, an inlet in the 
south-eastern corner of Queensland, and Moreton Bay, 
the district which subsequently became the colony of 
Queensland, 
