550 Mr. J. C. Melvill on the 
LX XI.—A few further Remarks upon the Erythrean Molluscan 
Fauna, with Descriptions of Seven Species from Aden, in 
the Collection of Commander EF. R. Shopland, R.I.M. By 
James Cosmo MELVILL, M.A., F.I.S. 
(Plate IX.] 
Since the time when, about five years ago, Commander 
Shopland published * a list of the marine Mollusca 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 belutschiensis, 
Melv., Pectunculus maskatensis, Melv., Donax Townsend, 
Sowb., D. aperittus, Melv., and, above all, Conus clytospira, 
M. & 8.f, though only in juvenile condition—these, with 
several others, thus showing a very marked extension of 
range. 
It was in March 1898 ¢ that I essayed a short biblio- 
graphical résumé of the Krythrean Molluscan 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 Soe. x. pp. 217-235 ; with Addendum, ¢. c. pp. 503, 504. 
+ Vide Ann. & Mag. Nat. Hist. ser. 7, vol. iv. pp. 461-468 (1899). 
t Op. cit. ser. 7, vol. i. 1898, pp. 194-206, pl. xii. 
§ “Expedition L.M. Schiff ‘ Pola’ in das Rothe Meer, 1895-96 und 
1897-98,” Zool. Ergebnisse, Lamellibranchiaten, von Dr. Rudolf Sturany : 
Wien, 1899, mit 7 Tafeln. 
