INVERTEBRATA, CRYPTOGAMIA, MICROSCOPY, ETC. 611 



Naples, to whom tlie author owes so much. Tho spccimeu on which 

 the description was founded was sent to him alive from Naples ; it is 

 distinguished by the presence of longitudinal stripes on its proboscis, 

 and by its dark olive-green colour. 



Ech,inoderm.ata. 



New Genus of Echinoidea.*— Under the name of Palceolampas, 

 Professor Jeffrey I5ell describes an irregular Echinoid allied to 

 Conoclypeus and Echinolampas, but distinguished from them by the 

 possession of certain more archaic characters ; tlie pores of the ambu- 

 lacral arese are arranged in pairs as far as the ambitus of the test, 

 while the outer row of each pair extends regularly to the actinostome. 

 The pores of each pair are not yet connected with one another by 

 grooves ; those of the inner rows are still fairly circular, but many of 

 those in the outer rows are slit-like or comma-shaped, and indicate 

 the commencement of the formation of the groove connecting the pairs 

 of pores. Two of the ocular plates are interesting on account of 

 their still retaining indications of their primitively double nature. 

 The whole test is regularly covered with primary tubercles, and 

 there are no bare bands even near the mouth, at which, also, the 

 bourrelets are but feebly developed. The generalized, or feebly 

 differentiated, characters of the form arc curiously enough spoken to 

 by the fact that nearly all naturalists who examined it hastily thought 

 that they had seen it before ; one, how^ever, thought he had a specimen 

 belonging at any rate to the same genus ; it was only some time 

 after the reading of his paper that Professor Bell was enabled to see 

 the specimen in question ; of this he has since given a sliort account 

 to the Zoological Society, and we are enabled to say that he tinds 

 himself compelled to regard it as an immature specimen of the more 

 highly specialized genus, Echinolampas. If this be the correct view, 

 it affoi'ds another example of the resemblance of the young forms of 

 differentiated species to the adult forms of less differentiated creatures, 

 and aids in compelling us to accept the aphorism : " The development 

 of the individual is a compressed epitome of the history of the 

 race." 



Fossil Tertiary Echini, f — Dr. Martin has arrived at tlie very 

 interesting conclusion that a considerable percentage of these fossil 

 Echinids, from Java, are still represented in the Indian Ocean ; the 

 tertiary species were described by Herklots as new, and these deter- 

 minations the present writer now revises. The author gives a valu- 

 able table of the species found, and shows what arc still living, and 

 what are their allies, either extant or fossil. He arrives at the 

 important result that even in the tertiary period the tropical oceanic 

 fauna ajjpears to have been "quite as ilistinct as it is in the present 

 day, for they contain no fossils which have yet been found in extra- 

 tropical tertiary deposits. This, as a second table shows, is indicated 

 also by other groups of the Invcrtebrata ; but in none perhaps is it 



• 'Proc. Zool. Roc.,' 1880, p. 4H. 

 + ' Nolort R. Mils. Nothcilnn<l8.' ii ' lx>^Ol p ~:i 

 voT,. in. '2 r 



