AN ACCOUNT OF THE INDIAN CIREIPEDIA PEDUNCULATA. 



PART I —FAMILY LEPADID^E (sensa stricto). 



By N. ANNANDAI.E, B.A., D.Sc, Superintendent, Indian Museum. 



CONTENTS. 



Page 



Preface . . . . • ■ • • • . . . . . 6i 



Classification of the Peduncnlata . . . . . . . . . . 62 



Family LEPADID^, .. .. .. ... .. ..64 



Introduction . . . . . . . . . . . . 64 



Convergence in the Lepadidse . . . . . . . . . . 64 



Variation in the lyepadidse . . . . . . . . . , 66 



Genera of Lepadidse . . . . . . . . . . . . 66 



' ' Subspecies ' ' and ' ' varieties " . . . . . . . . . . 67 



Systematic account of the Indian species . . . . . . . . 69 



Subfamily Oxynaspidin^ . . . . . . . . . . 69 



Genus Oxynaspis . . . - . . • ■ ■ • • . . 69 



Subfamily Lepadin^ . . . . . . . . . . . . 71 



Genus Lepas . . . . ■ ■ • • • • • • 72 



Subgenus Anatifa . . . . . - . . . . . . 72 



Subgenus Dosima . . . . . . . . . . • ■ 77 



Subgenus Hyalolepas . . . . . . . . . . . . 78 



Genus Conckoderma . . . . . . . . . . 79 



Genus Heteralepas . . . . . . ■ . . . 83 



Subgenus Paralepas . . ■ ■ . ■ • • ■ • . . 84 



Subgenus Heteralepas . . . . . . . . . . 85 



Subfamily Pœcilasmatin^ . . . . . . . . . . 86 



Genus Pœcilasma . . . ■ ■ ■ ■ • . . . . 86 



Table of distribution, etc., of Pœcilasma and Megalasma . . 89 



Subgenus Pœcilasma . . . . - • • • ■ • . . 90 



Subgenus Trilasmis . . . . . . . . . . . . 94 



Genus Megalasma , . . . . . • . . . . . 95 



Genus Dichelaspis . . . . . . . . . . . . 98 



Biology of the genus Dichelaspis . . . . . . . . . . 100 



Table of distribution, etc., of the genus Dichelaspis . . . . . . 105 



lyist of the Lepadidse in the Indian Museum . . . . . . . . 127 



List of the R.I.M.S. "Investigator " stations cited in the paper . , . . 137 



