384 DE. H. L. JAMESON ON THE [Apr. 16, 



Species 9. Mabqaiutieeea ateoptjepueea. 



Avici'la atropurpurea, Duuker, 1852, p. 76 ; loc. iucogn. 



Avicula {Meleagruia) airopurpurca, Duuker, ]S72, p. 14, tab. '•'). 

 fig. 3. 



Species 10. MAEGAEITirEEA ANOMIOIDES. 



Avicula anomioides, Eeeve, 1857, sp. 26 ; loc. incogn. Type in 

 Brit. Mils. 



= 31. vulgaris, fide Cooke, 1886. 



A young shell, apparently distinct. Young shells from Baza- 

 ruto Island (Ponsonby Coll. Brit. Mus.) resemble this form. 

 Duuker suggests that this species and also 31. crocata Swainson 

 may be his if. ciirina. 



Species 11. Maegaeitifeea scheepmakeei. 



Avicula (3Ielea<jrina) scheepmalceri, Dunker, 1872, p. 6, tab. 1. 

 fig. 1 ; loc. incogn ; probably = 31. sugillata, Eeeve. 



Species 12, Maegaeitipeea teistis. 



Avicula (3£eleagrina) trisiis, Dunker, 1872, p. 44, tab. 14. fig. 3 ; 

 loc. iucogn. 



Section C. Teeth much more strongly developed tJian in Section "b. 

 Shell someichat oblique; longest dorso-ventral axis directed 

 slightly haclcward ; very convex, inequivalve, ivith ivell-marJced 

 jMsterior process of the hinge and distinct sinus in posterior 

 margin. 



In this section, which comprises the shells known as '■' Lingah" 

 in the trade, there is a general approach towards the typical 

 Pteria s, s. form, in the sharp separation of the hinge from the 

 valves by anterior and posterior marginal notches, in the convexity 

 and slight obliquity of the shell, and the well-marked anterior and 

 lateral teeth. 



Species 13. Maegaeitipeea vulgaeis. 



Perlamater vulgaris, Schumacher, 1817, p. 108, pi. xx. fig. 8 ; 

 no loc, 



Chemnitz, 1785, tab. 80. fig. 717 (referred to by Schumacher as 

 a second figure of his P. vidgaris). 



Avicida fucata, Gould, 1850, p. 309; 1852, p. 441, pi. 39. 

 fig. 551 ; New Zealand. 



Avicida fucata, Beeve, 1857, sp. 74 ; Japan. Type in B.M. 



Avicida occa, Beeve, 1857, sp. 24 ; Bed Sea. Type in B.M. 



Avicula aerata, Eeeve, 1857, sp. 32 ; Australia. Type in B.M. 



Avicula perviridis, Eeeve, 1857, sp. 20 ; Australia. Type in 

 B.M. 



Avicula (Meleagrina) varia, Dunker, 1872, p. 17, tab. 4. fig. 6 ; 

 Eed Sea. 



