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XI. On a Collection of Crustacea, Decapoda and Slonwfopoda, chiejlij from the Inland 

 Sea of Japan ; loitli Descriptions of New Species. By Dr. J. G. nE Man, of lerseke 

 {Holland). {Communicated by the Eev. T. E,. R. Stebbing, M.A., F.B.S., F.L.S.) 



(Plates 31-33.) 



Read 1st November, 1906. 



rp 



iHE present collection, which was entrusted to me by Prof. F. Jeffrey Bell, of the 

 British Museum, London, consists, firstly, of 30 species of Decapod and 2 of Stoniatopod 

 Crustacea, collected in the Inland Sea of Japan, mostly in deep water ; secondly, of 

 7 Decapod species from four other different localities. The last named are interesting^ 

 not only on account of two novelties, a new Parathelphusa and a new Palceinon, 

 discovered respectively in the Chinese pi'ovince of Yunnan and at Darjeeling, but also 

 by the Mediterranean Sicyonia sculpta having been captured off Bahia ; the most western 

 limit of geographical distribution of this species was, indeed, hitherto the Cape 

 Verde Islands, so far as I am aware. For Potamon spinescens. Calm., a new subgenus, 

 Parapotamon, is created. 



The Crustacea from the Inland Sea of Japan proved also to be of much interest. 

 Five species are new to science, viz., a remarkable small Lambrus, for which a new 

 subgenus, Oncodolambrus, is created, two new species of Craiigon, and two of the genus 

 Spirontocaris. Most of the other species are also remarkable. Thus a small species 

 of Pinnotheridoe, viz., the rare Asthenognathus incequipes, Stimps., was captured, a form 

 described in 1858 and not found again since that year. I wish also to di-aw attention 

 to the rare Arcania globata, Stimps., Galathea acanthomera, Stimps., and Leander 

 longipes, Ortm. The discovery of the male of Spirontocaris rectirostris (Stimps.) is 

 interesting; it shows considerable sexual differences from the hitherto only known 

 female. Spirontocaris pandaloides (Stimp.s.), of which several specimens were caught, 

 is also one of the numerous rare forms described, almost half a century ago, 

 by that eminent American naturalist, which have not occurred in literature since 

 that time. 



Preliminary diagnoses of six new species have already been published in the ' Annals 

 and Magazine of Natural llistory,' ser. 7, vol. xvii. 1900, pp. 400-4.06, and of the new 

 Parathelphusa in the ' Zoologischer Anzeiger ' of March 20, 1906. 



SECOND SERIES. — ZOOLOGY, VOL. IX. 66 



