Supplementary Report on the Present State of our Knowledge with 

 regard to the Mollusca of the West Coast of North America. By 

 PHILIP P. CAEPENTEE, B.A., Ph.D* 



THE object of the present Report is (1) to correct the errors which have been 

 observed in the first Report ("Report &c." 1856, pp. 159-368) ; and (2) to 

 point out the fresh sources of information which have been rendered avail- 

 able since that period. For convenience of comparison, the paragraph num- 

 bers refer to those of the first Report in the corrections, and are continued 

 from them in the addenda. In the bibliographical portion, the criticisms by 

 the writer of this Report are inserted in [ ] ; a distinction not always attended 

 to in the former volume, in consequence of which erroneous names and local- 

 ities have been attributed to the reviewer, instead of to the authors quoted. 

 . 22. Introduction. (Line 4 from bottom.) The river Willamette flows 

 northwards (Gld.). 



23. Early Writers. The only Californian shell described by Linnaeus is 

 Turbo sanguineuS)=T. coccineus, Desh. ; v. Hani. Ips. Linn. Conch, p. 334. 

 The types are too much worn to decide whether they came from the North 

 Pacific or (as is more probable) from the Mediterranean. In Gmelin's edition 

 of Linnaeus, Lipsise, 1788-1790, which is, in great measure, a translation 

 from a German work published a few years in advance [teste Hanley], the 

 following species are assigned to the " West Coast of America," probably on 

 the authority of Martyn : page 3529, Murex foliatus : 3702, Patella pecten : 

 3712, Patella catyptra. The last two seem exotic. 



Many West-coast species had found their way into English collections 

 during the last century, at a much earlier date than was expected at the time 

 of the first Report. They were mainly derived from the voyages of Capt. 

 Cook and other circumnavigators. Capt. Cook was accompanied by Solander, 

 as naturalist, at the instance of Sir Joseph Banks. His shells passed into 

 the hands of Mr. Humphrey, the dealer, at whose death the remainder, a 

 thousand boxes, became the property of the elder Sowerby, and (in part) of 

 Mawe [teste Hanley]. They took their chance of being figured or described 

 by the early conchologists. The localities are (as might be expected) often 

 interchanged, but have been quoted by later authors, who have not thought 

 fit to avail themselves of more correct sources of information. 



The first accurate delineations are by Thomas Martyn, in his ' Universal 

 Conchologist/ London, 1784. Those who only know this book from Chenu's 

 reprint, Paris, 1845, can form but a poor idea of the exquisite beauty of the 

 original work. Of this, very few copies are accessible ; but it may be consulted 

 at the British Museum, the Royal Society, and the Royal College of Surgeons. 



No. Plate. Fig. 



16 5 3. Patella tramoserica, Mart. N. W. C. America, very rare. [N. Zealand.] 

 18 6 1. Patella calyptra, Mart. N.W. Coast of America, very rare. [Not 

 identified : resembles Crep. adunca, without deck. Hani, con- 

 siders it a Hipponyx, like austraUsA 



31 8 4. Trochus invequalis, Mart. Friendly Isles, common. [Does not 



closely resemble the Japan and Vancouver species,=Pachypoma 

 ffibberosum, Chemn.] 



32 10 1. Trochus canaliculatus, Mart. N. Zealand, rare. 



33 10 2. Trochus annulatus, Mart. N. Zealand, very rare. 



34 10 3. Trochus costatus, Mart. St. George's Sound, rare. [=Calliostoma 



filosum, castaneum, ligatum. and modestum.] 



* In consequence of the expected arrival of fresh materials, this report has been 

 corrected and continued up to the period of going to press. 

 Warrington Free Museum and Library, Aug. 1st, -1864. 



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