518 liE.Y. 11. B. WATSON ON WEBB S 



" 3. Mactra pullastrina, nob,, rugosa, Lamk. A worn sliell, 

 and the only one broken. More. New." 



This D'Orbigny published as M. rugosa, Chemnitz. In Mr. 

 Lowe's note, Lutraria rugosa, Lamk., had been first written ; 

 t\ien Ltdraria had been scored out, the words " r«f_$'osfl, Lamk." 

 being left. Then a score was drawn under all these words. Then 

 Mactra 'pullastrina, nob., was written above the line, and the 

 word " New " was written over the word rare, so as to erase it. 



This species is not found in Madeira. 



" 4. Lima squamosa.'" 



This is so given by D'Orbigny. It is also Madeiran. 



" 5. Mactra Adansoni, nob. Adans. t. 17. f. 17. 'LeFatan.' 

 Not taken up by Lamk. or any other author. Sadly worn 

 specimens." 



This is published by D'Orbigny as M. striatellata. Lam. It is 

 not found in Madeira. 



" 6. Oardium costatum. ' Coquille rare et precieuse, surtout 

 lorsqu'on possede les deux valves du meme individu,' Lamk." 



D'Orbigny publishes this species with the remark: that, " MM. 

 Webb et Berthelot I'ont recueillie a Lancerotte." 



This is probably one of the exotic species bought at Lancerotte, 

 and the place of whose origin is very doubtfully Canarian. (See 

 Lowe, Mogador shells, p. 188.) It is not found in Madeira. 



" 7. Mytilus edulis, var. denticulis cardinalibus subbinis, an- 

 swers exactly to Adanson's, p. 212, t. 15. f. 4. ' Le Fouet,' a 

 synon. not heretofore identified. Specimens of Balaniis pun- 

 ctatus attached to it." 



D'Orbigny publishes this as M. elongatus, Chem. and Lam., 

 while WeinkauiF (Conchyl. d. Mittelmeeres, i. 227) denies that it 

 is the M. elongatus of Lam., and gives for it M. pictus, Born. 

 Danker (Index, Moll, p, 47) says it is M. smaragdinus, Chem. 



I have some very young shells from Madeira, which may pos- 

 sibly be this species. 



" 8. Venus verrucosa^ 



D'Orbigny identifies this with the Elonisse of Adanson, which 

 is a misprint for Clonisse. 

 Madeii'an. 



" 9. Dolium oleariimi, Lamk. The larger size you mention may 

 be D. galea. Look well after it." 



