10 



BULLETIN 93, UNITED STATUES NATIONAL MUSEUM. 



In addition to material tabulated above, I have had available for 

 study several species contained in the collection of the Academy of 

 Natural Sciences of Philadelphia, including the types of five species 

 and four subspecies, and from the Museum of Comparative Zoology 

 the types of two subspecies. So far as I know, this includes all but 

 one of the types of recent sessile cirripedes contained in or described 

 from American museums.^ 



The British Museum, contammg the types of Darwin's monograph 

 and of Hoek's CJiallenger report, etc., possesses more types of sessile 

 cirripedes than any other museum, at least 34 per cent of the total 

 number of accepted species. The United States National Museum 

 stands next, having types of about 21 per cent of the valid species 

 and about 43 per cent of the subspecies. Other museums contam 

 comparatively few types. Many types of the older (pre-Darwinian) 

 species are lost, or at least the present location of the type-specimens 

 is not known. The calculations above do not include types of forms 

 generally admitted to be synonyms, 



DISTRIBUTION OF AMERICAN BALANOMORPH BARNACLES. 



The distribution of Verrucidae has been considered separately (p, 18). 

 In the following list the species are arranged systematically, the geo- 

 graphic ranges of Atlantic species being printed in roman, of Pacific 

 species in italic type. 



Species. 



Balanus tinlinnabulum antil- 

 lensis. 



t. cati/ornicus 



t. peninsularis 



t. coccopoma 



t. galapaganus 



t. cnncinnus 



psiltacus 



ehurneus 



improvisus 



amnhilrite nivcus 



a. Inexpectatus 



peruvianus 



concavus pacificus 



regalis 



poi'cihis 



trigonus 



spoiigicola 



calidus 



lavis 



af/uiln 



nubilis 



flo.i 



rostratus alaskensis. . 



T. fi/ierlus 



r. dalli 



T. heteropus 



balanus 



b. pugetensis 



crenatus 



c. cuTvisrutum 



c. (lelicatus 



glandula 



'The 



American distribution. 



Cuba to BraziL 



Santa Barbara to San Diego, Cal 



Cape St. Lucas, Lower California 



Mazatlan to Panama 



Galapagos Lslauds 



Peril to Slra it of Magellan 



Peru to Strait of Afagiltan 



Massachusetts Bay to Caribbean Sea 



Nova Scotia to Patagonia; 7 West Colombia. 



\'ineya)il Sound to southern Brazil 



Gulf 'of California 



Peru. 



California to Peru 



West coast of Lower California 



Tf V.5< coa.it of South A merica 



West Indies to southern Brazil; southern 



California to Peru. 

 Venezuela to Brazil 



West Florida to Yucatan and St. Vincent. . 



Rio Negro to Cape Horn, north to Peru 



Monterey to San Diego, Cal 



Southern Alaska to Santa Cruz, Cal 



California 



A laska 



Bering Sea 



Bering Sea 



Puget Sound 



Arctic Ocean to Long Island; Bering Sea. . . 



Puget Sound 



Arctic Oceaii to Long Island; Bering Sea to 

 Santa Barbara, Cal. 



Alaska 



California 



A leutian Islands to San Diego 



Occurrence elsewhere. 



Eiu-ope; Red Sea. 



West and South Africa; 



Japan to Australia. 

 Enn;lish Channel lo South 



-Vl'rica; Seychelles. 



Northern Europe. 



Europe, Mediterranean; 

 northern Japan. 



typo of Euraphia hembcli Conrad apiJoars to be lost. 



