XIX 



Kaempferi. Darwin gave this name to a species from Japan which was found attached to 

 Inachus Kaempferi de Haan, a crab "probably from deep water". But the same author, when 

 describing P. aurantücm from Madeira, pointed out that this species "has the closest general 

 resemblances to P. Kaempferi and is evidently a representative of it". "On close examination, 

 however", Darwin says, "almost every part differs slightly" and his Monograph contains an 

 enumeration of these differences. Thereupon Gruvel, 1903, when investigating specimens of a 

 Poecilasma-specïes, collected at depths varying from 355 — 782 m. near Cape Bojador, at a 

 short distance from Madeira, found that some of these corresponded to Darwin's P. Kaempferi, 

 and the others to his P. aurantium, but that the differences between the specimens of the 

 two sets were unimportant and not sufficiënt to justify the maintenance of two different species. 

 He investigated specimens of P. Kaempferi of the British Museum-collections (whether they 

 were Darwin's types from Japan, or came from Japan at all, he does not say) and his conclusion 

 was that the Japan and the Madeira forms belong to the same species, the latter form 

 developing moreover into an orange-coloured variety : P. Kaempferi var. aurantium. Hence 

 Poecilasma Kaempferi Darwin would also be a species found in both great oceans of the world. 



But these are the only specimens of deep-sea Cirripedes that I know to be observed 

 in the Malay Archipelago or eastern seas in general and in the Atlantic Ocean as well : all the 

 other deep-sea species of Scalpellum, of Verrtica, and other genera, are peculiar to one 

 region, or only inhabit, if they are found in any other province, the adjacent one — Australia, 

 China Sea, etc. 



A few of the species collected at moderate depths in the region now under consideration, 

 but which were never observed attached to floating objects, have also a wide distribution. I 

 found them to be the following- : 



Oxynaspis celata Darwin 

 Pollicipes mitella (Linn.) 

 LitJwtrya dorsalis Ellis 

 Balanns calceolus Ellis 

 „ concavus Bronn 

 „ perforaties Brug. 

 „ trigonus Darwin 

 Acasta cyathns Darwin 

 Tetraclita porosa (Gmelin) 

 „ serrata Darwin 



Pyrgoma anglicum Sowerby 

 Chtkamalus stellatus Poli 



Luzon 



Malay Archipelago 



Maldives 



Malay Archipelago 



Philippine Archipelago 



Andaman Isl. 



Malay Archipelago 



Gulf of Manaar 



Philippine Archipelago 



Off Ceylon 



Singapore 



and also 



Madeira 

 Madagascar 

 West-Indies etc. 

 West coast of Africa 

 California ; Panama ; Peru 

 Mediterranean ; Atlantic 

 Atlantic ; Peru ; California 

 Madeira ; West-Indies 

 West-Indies; Galopagos etc. 

 Cape of Good Hope; Algoa Bay 

 Atlantic ; Mediterranean 

 Atlantic; West-Indies, Brazil. 



Philippine Archipelago „ „ 

 Perhaps Balanus stultus Darwin fr.om Singapore, and Pyrgoma cancellatum Leach, which 

 according tp Borradaile inhabits the Maldives, and are both recorded by Darwin from the 

 West-Indies, but with a point of interrogation, must be added to this list. This may be also 

 the case with Balanus declivis Darwin : Darwin instituted the species for a barnacle living 

 embedded in sponges at the West-Indies, and Weltner determined as belonging to the 

 same species specimens from Batjan, which Martens collected, and which lived with Acasta, 



