134 PROCEEDINGS OF THE MAT.ACOLOGICAL SOCIETY. 



History) has recently received New South Wales specimens from 

 Dr. Cox, confirming Sowerby's locality of " Newcastle, Australia," 

 whicli town is in New South Wales. They seem to bo indistinji-uishablo 

 from /. cyancopunctatiis except in possessing one slit less in the anterior 

 and posterior valves, and this I think is hardly enough to justify their 

 being made into a separate species. The gills run the whole length 

 of the foot ; the girdle is light green with darker bands ; the valves are 

 tinted with pink inside, and the sculpture is micropunctate on the 

 median, and smooth on the lateral, areas. The blue markings are 

 very variable, and are very poorly represented on the figure in the 

 " Conchological Illustrations." Krauss' South African record has 

 never, I believe, been confirmed : can it be erroneous ? A range of 

 locality from New South Wales to South Africa is very wide for a 

 species of Polyplacopliora^ generally a restricted group. Valve-slits 

 (in /. lentifjinosuH) : anterior 11, median 1, posterior 12. 



Ischmchiton textiUs, Gray, 1828. Spic. Zool. pt. 1, p. 5. Cape of 

 Good Hope (Carmichael) ; Table Bay, Port Elizabeth, etc. (Sowerby). 

 There is a var. punctulafa, Krauss, which is hardly worthy of the 

 name, as the type is also punctate. At first sight the species 

 resembles a large /, oniscus, but the striio on the median valves 

 are stronger in /. textilis. Valve-slits: anterior and posterior 12, 

 median 1. 



hclinocMton pertusus, Eeeve, 1847. Conch. Icon. pi. xvi. fig. 88. 

 Simons Bay, according to Hennah (Krauss). It is placed by Mr. 

 Pilsbry in the group of /. Rissoi, Payr., but seems nearer to /. textilis. 

 Valve-slits : anterior 12, median 1, posterior 9. 



Ischnochiton tigrinus, Krauss, 1848. Die Sudafrik. Moll. p. 38. 

 False Bay (Krauss). There is a var. unicolor, Pilsbry (1893), which 

 differs from the type in the absence of the longitudinal stripes. The 

 species belongs to the section Radsiella. Valve-slits: anterior 18, 

 median 2-3, posterior 12-13. 



Plaxiphora Wahlbergi, Krauss, 1848. Die Sudafrik. Moll. p. 36. 

 Table Bay (Krauss). Valve-slits: anterior 8, median 1, posterior 

 none. 



Acanthochites Garnoti^ Blainville, 1825. Diet. Sci. Nat. xxxvi. 

 p. 552. Seapoint, near Cape Town ("Challenger"); Table Bay, 

 Natal, Port Elizabeth, etc. (Sowerby) ; Mauritius and Reunion (von 

 Martens), Spelt by Mr. Sowerby Garneti. C. BanielU, Sowerby 

 (figured, but not described, in the " Conchological Illustrations"), is a 

 synonym. The only difference appears to be that in C. Danielli there 

 are two more tufts on the girdle behind the posterior valve ; the 

 specific relations are probably precisely similar to those of Acantho- 

 chites fascicularis, L., and its variety gracilis, Jeffreys. 



Chiton nigrovirens, Blainville, 1825. Diet. Sci. Nat. xxxvi. p. 538. 

 Cape of Good Hope (Blainville) ; Seapoint, near Cape Town 

 ("Challenger"); Table Bay and Natal (Sowerby). Spelt by Mr. 

 Sowerby nigrovirescens. C. capensis, Gray (1828), is a synonym. 

 Valve-slits: anterior 12, median 1, posterior 14-15. The median 

 sinus has 8 denticulations. 



Chiton tulipa, Quoy and Gaim., 1834. Voy. Astrolabe, Zool. iii. 



