Herein he divided the class A y es into two subclasses, to which he applied the names of Insessores and Grallatores (hitherto used by their inventors Vigors and Illiger in a different sense), in the latter work relying chiefly for this division on characters which had not before been used by any systematist, namely that in the former group monogamy generally prevailed and the helpless nestlings were fed by their parents, while the latter group were mostly polygamous, and the chicks at birth were active and capable of feeding themselves. [Please select]
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--The Reptilian Subclasses Diapsida and Synapsida and the Early History of the Diaptosauria. [Please select]
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181 SYNOPSIS OF THE CLASSIFICATION OF THE POLYZOA 183 SYNOPSIS OF THE SUBCLASSES, ORDERS, AND SUBORDERS 183 SYNOPSIS OF THE LEADING CHARACTERS OF THE DIVISIONS OF THE SUBORDER CTENOSTOMATA 185 SYSTEMATIC LIST OF THE INDIAN FRESHWATER POLYZOA 187 APPENDIX TO THE VOLUME 239 Hints on the Preparation of Specimens 239 ADDENDA 242 Part I. [Please select]
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As representatives of both subclasses of polyzoa and of more than one order of Ectoprocta occur in fresh water, I have prefaced my description of the Indian species with a synopsis of the more conspicuous characters of the different groups (pp.) [Please select]
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