39-4 Mr. G. J. Arrow on the Lamellicorn 



arms, by a finely plated perisome. None of these structures 

 remain, so that, looking - at the patina from above (text-fig. 2), 

 one sees the opening of the rectal channel, of elongate pear- 

 shape. It is obvious that the rectum must have passed 

 upwards close to the curved posterior basal, and that it was 

 therefore well outside the radial facets and the arms. Only 

 the slight outward slope of the posterior radial facets remains 

 to remind one of those more normal Taxocrinids in which the 

 arms enclose the anal structures. 



Affinities of Cydonocrinus. — That the species is closely 

 allied to Taxocrinus (whatever the precise connotation of that 

 name) must be admitted, and I have long thought that it 

 might be more prudent to leave it in that genus, especially in 

 the absence of evidence from the arms. But the small stem- 

 facet, the relatively large infrabasals, the globular shape, and 

 the projection of the pariproct all give it so marked a cha- 

 racter that no one seeing the specimen would feel tempted 

 to call it merely Taxocrinus. Without waiting longer for 

 further proof, I am induced to publish the species now under 

 an independent generic name, in order to mark the tendency 

 of its modifications towards the fossil from the supposed 

 Permian of Timor hitherto known as Hypocrinus j^iriformis. 

 That question is discussed in a paper now being offered for 

 the ' Proceedings' of the Zoological Society. 



XLVIII. — Notes on the Lamellicorn Coleoptera of Japan and 

 Descriptions of a few new Species. By G. J. Arrow. 



(Published by permission of the Trustees of the British Museum.) 



While engaged in incorporating into the British Museum 

 collection the recently acquired Japanese Coleoptera col- 

 lected by Mr. George Lewis, which have been the subject of 

 so many important papers, I have found it necessary to 

 make many rectifications in their nomenclature ; while 

 certain species remain without names. So many are the 

 alterations and additions to the Pleurostict Lamellicornia 

 (enumerated by Mr. Lewis in 1887 and 1895) that I have 

 thought it desirable to compile a fresh list of that part of 

 the Coleoptera. 



Few corrections have to be noted relating to the Laparo- 

 stict Lamellicornia, but the following points must be 

 mentioned : — 



