550 Mr. J. C. Melvill on the 



LXXI. — A few further Remarks upon the ErythrceanMolluscan 

 Fauna, with Descriptions of Seven Species from Aden, in 

 the Collection of Commander E. R. Shopland, R I.M. By 

 James Cosmo Melvill, M.A., F.L.S. 



[Plate IX.] 



Since tlie time when, about five years ago. Commander 

 Shopland published * a list of the marine MoUusca noticed 

 by him at or near Aden, he has received from his corre- 

 spondents several further parcels, and been able to increase 

 the sum total to between 720 and 750 species in all. There 

 still, naturally, remained several doubtful forms, and lately 

 he forwarded the whole of these to me, and many have been 

 now satisfactorily determined. Deducting then various 

 hardly adolescent species and several too imperfect to do 

 otherwise than note their probable generic affinities, the 

 following seven seem worthy of description, all coming from 

 Aden, in or near the harbour. I have no particulars at what 

 depth they were dredged. 



It is interesting to record at the same time that certain new 

 and rare forms described during the past few years, being 

 some of the results of the explorations of Mr. F. W. Townsend 

 in the Persian Gulf and Arabian Sea, likewise are among 

 the latest acquisitions of Commander Shopland from the 

 neighbourhood of Aden. Such are Strombus belictschiensis, 

 Melv., Pectunculus maskatensisj Melv., Donax Townsendi, 

 Sowb., IJ. aperittusj Melv., and, above all, Conus clytospira^ 

 M. & S.f, though only in juvenile condition — these, with 

 several others, thus showing a very marked extension of 

 range. 



It was in March 1898 J that I essayed a short biblio- 

 graphical resume of the Erythrjean MoUuscan fauna, inclusive 

 of Aden, and since that date but little seems to have been 

 effected by specialists towards further elucidation of this inter- 

 esting subject, if we except the excellent monograph of Dr. R. 

 Sturany on the ' Pola ' Expedition in the Red Sea §. 



These dredgings were carried out by Dr. Fr. Steindachner 

 and Herr Friedrich Siebenroch, only the Pelecypoda being 



* Shopland, E. R., " List of Shells collected at Aden, 1892-96," Journ. 

 Bombay Soc. x. pp. 217-2.35 ; with Addendum, t. c. pp. 503, 504. 



t Vide Ann. & Mag. Nat. Hist. ser. 7, vol. iv. pp. 461-463 (1899). 



X Op. cit. ser. 7, vol. i. 1898, pp. 194-206, pi. xii. 



§ " Expedition L.M. Schiff ' Pola ' in das Rothe Meer, 1895-96 and 

 1897-08,'' Zool. Ergebni&se, Lamellibranchiaten, von Dr. Rudolf Sturany : 

 Wien, 1899, mit 7 Tafeln. 



