267 
QUEENSLAND MOLLUSCAN NOTES , No. 1. 
Salmacoma vappa gen. & sp. nov. 
(Plate XXX, figs. 7, 8.) 
A Tellinid of the “ Macoma ” style. Macoma was founded on the 
Palaearctic Tellina balthica Linne, with which the Australian so-called species 
have nothing in common save lack of lateral teeth. 
Shell of medium size for the family, thin, inequivalve, valves nearly 
equilateral but strongly twisted, edge of valves markedly sinuous, valves convex, 
left more tumid than right, beaks subcentral. Colour salmon-cream shading 
into salmon-pink on umbones and margins. Sculpture consists of fine concentric 
growth lines more pronounced towards the margins. Hinge with two small teeth 
in left valve, one bifid, other scarcely so ; in right valve, one not bifid. Pallia! 
line advancing across from base of muscle scar towards the other, which in the 
left valve it does not reach by about 4 mm., but in the right rising higher up and 
becoming subangulate below the umbo becomes confluent with the opposite 
muscle scar. Length 33 mm. ; height 24 mm. ; depth of conjoined valves 16 mm. ■ 
right 6, left 10. 
Collected by the Rev. P. Hubbard, at Innisfail. 
Family MACTRIDJE. 
Since Hedley 's list appeared Smith published A List of the Australian 
Mactridae (Proc. Mai. Soc. (Lond.) xi, pp. 137-151, June 1914), and that essay 
may be here commented upon. 
^ Smith has regarded Mactra abbreviate Lamarck (Hist. Anim. s. Vert., v, 
p. 477, 1818: “Port Jackson”) as equivalent and anterior to obesa Deshayes! 
It may be noted that throughout the paper Smith preferred Deshayes' names to 
those of Reeve, but the latter were published first as accepted by Hedley in his 
list. In this instance obesa was published by Reeve (Conch. Icon., viii, f. 19, 
March 1854) from Torres Straits, and that would be the correct name for the 
North Queensland shell. Smith would regard as a variety only the form 
meretriciformis , also introduced by Reeve (loc. eit., f. 18, March 1854) from 
Pori Essington. It would be nearer the truth if Lamarck's species abbreviata 
were regarded as coming from Shark's Bay, Western Australia, as while 
Lamarck had plenty of shells from that locality he had very few if any from 
North Queensland. Hedley has included M. abbreviata in his Western Australian 
list, without comment or synonymy. 
Under the name Mactra luzonica Deshayes, Smith gives localities “Luzon 
Middle Harbour and Botany Bay, Sydney (Angas), Queensland (Hedley for 
apmna ),” 
Reeve s apicina (loc. cit., pi. xix, sp. Ill, May 1854) appears to be based 
on an immature specimen from unknown locality, and may be identical with 
Reeve’s luzonica (loc. cit., pi. xvi, sp. 81, May 1854) from the I. of Luzon but 
the Queensland shells agree better in shape with Reeve's M. decora (loc. cit., 
pl xvi, sp. 80, May 1854), again from unknown locality, but my specimens lack 
the coloured rays. From Caloundra, South Queensland, large specimens are 
commonly seen, and these rather mimic the northern form of rufescens in shape 
but not m sculpture, and is probably the species mentioned by Smith from 
Queensland under that name. 
