This is a modification of the classification proposed by me at the meeting of the British Association at Oxford, 1894 (see Report, p. 696). For further characteristics of these Orders and sub-Orders see below Chap. XII. Ehlers, "Die Borstenwürmer," 1864, gives a historical survey of the group, and enumerates the earlier classifications.
In Coabangia (see p. [284]) the anus is near the anterior end, on the ventral surface.
It is doubtful whether these organs are palps or only lateral lips.
Pruvot traced the nerve supply to these organs, and thus established their homology. Arch. d. Zool. Expér. (ser. 2) iii. 1885, p. 211.
Meyer, "Stud. ub. d. Körperbau der Anneliden," Mt. Zool. Stat. Neapel, vii. 1887, p. 592; viii. 1888, p. 462. In this work a great number of important and interesting anatomical facts are recorded with respect to the Terebelliformia and Sabelliformia, as well as certain details as to the structure and development of the nephridia.