270 Mr. J. S. Baly on new Phytophagous Insects. extremity. Branchise compound, in four or five pairs on the sides of the body, the anterior ones bifurcated or trifurcated into papillose, conical, pointed processes; and on the inner side of the stem of each are two or three transparent, almost colourless, plumose and branched appendages. Stem coloured like the body ; papillse white, with subterminal crimson-red ring. Foot broad, tapering, canaliculated, white, pellucid. Ova yellow. This species combines some of the characters of a true Eolis with those of the new genus Dendronotus. The combination of plumose and papillose ramification of the branchise is very cu-rious. The internal viscera correspond with those of the genus Dendronotus. I have named the species in honour of one who, with his associate Mr. Alder, has separated the arborescent forms of Eolididse from the old genus Tritonia. Eolis Skinneri, Kel. About 4 lines long ; white. Dorsal tentacles opake white, with three granular rings. Oral tentacles long, with a subterminal reddish ring. Branchiae in five sets, of three or four papillae in each ; opake white, with a basal red ring. Found by Major Skinner, Auditor-General, on sea-weed near the South Gate, Fort of Colombo. XXVIII. — Descriptions of new Genera and Species of Phytopha-gous Insects. By J. S. Baly, Esq. [Continued from p. 128. J Fam. GalerucidsB. Genus Diabrotica, Erichs. Diabrotica dimidiata. D. ovata, convexa, flavo-fulva, nitida, elytris vix ante medium ad apicem abdomineque caeruleo-nigris ; thorace subquadrato, vix pone medium transverse sulcato ; unguibus piceis. — Long. 6 lin. Hab, Banks of the Napo. Diabrotica regalis. D. ovata, convexa, fulva, nitida ; capite, pectore, scutello elytrisque nigris, his minute punctatis, a basi apicem versus ampHatis, mar-gine exteriore maculisque decern fulvis, harum 4 ante, 4 vix pone medium, et 2 ante apicem positis ; antennarum articulis tribus basalibus tribusque ultimis fulvis, ultimi apice nigro, articulis in-
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