PELECYPODA OF THE SIBOGA EXPEDITION 



(EXCLUSIVE OF THE PECTINIDAE) 



BY 



B. PRASHAD, D.SC. (Punjab & Edinburgh) 

 F. A.S.B., F.R.S. E., F. L. S., F. Z. S., MB. O. U., Superintendent, Zoological Survey of India, Indian Muséum, Calcutta. 



With 9 plates and a chart 



INTRODUCTION 



The Pelecypoda ^) of the " Siboga" Expédition collected by Professor Max Weber and his 

 colleagLies were entrusted to the celebrated conchologist Monsieur Ph. Dautzenberg of Paris, 

 for study and report in the early part of the présent century. The soft-parts of the varions 

 gênera and species of the class, provisionally named by Monsieur Dautzenberg, were reported 

 upon by Monsieur Paul Pelseneer ^) of Brussels, and a joint report on the systematics of the 

 family Pectinidae by Dautzenberg and' Bavay ^) was published in this séries. The main part of 

 the collection, however, still remained to be worked out, and although Monsieur Dautzenberg 

 had done a great deal of preliminary work, he, owing to other engagements, the untimely 

 death of his collaborator for the remainder of the work, Monsieur Henri Fischer, the World War 

 and advancing âge, felt that it will not be possible for him to complète the report. In 1927, 

 therefore, Professor Max Weber, knowing that I was working on the Indo-Pacific Pelecypoda, 

 suggested that I should finish the study of the "Siboga" Pelecypoda. Monsieur Dautzenberg not 

 only readily consented to this arrangement and handed over to me the entire collection and the 

 copions notes that he had made on it, but was also good enough to render me invaluable help in 

 various ways in connection with this work while I was working in Paris in the early part of 1927. 



1) I hâve adopted the name Pelecypoda in préférence to Lamellibranchia for the bivalve molluscs, as it is the move appropriate name. 



2) Pelseneer, P. — Les Lamellibranches de l'Expédition du Siboga. Partie Anatomique. Mon. Lllla, pp. l — 126, 

 pis. I— XXVI (1911). 



3) Dautzenberg, Ph. & Bavay, A. — id., Partie Systématique. I. Pectinidés. Mon. LlIIb, pp. 127 — 167, pis. XXVII, 

 XXVIII (1912). 



SIBOGA-EXPEDITIE LUI (f . ' ' « I 



