270 Mr. J. S. Baly on new Phytophagous Insects. 



extremity. Branchiae 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; papillae 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 branchiae 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 Eolididae 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. Gralerucidae. 



Genus Diabrotica, Erichs. 



Diabrotica dimidiata. 



D. ovata, convexa, flavo-fulva, nitida, elytris vix ante medium ad 

 apicem abdomineque cseruleo-nigris ; thorace subquadrato, vix 

 pone medium transverse sulcato ; unguibus piceis. — Long. 6 lin. 



Hah. Banks of the Napo. 



Diabrotica regalis. 



D. ovata, convexa, fulva, nitida ; capite, pectore, scutello elytrisque 

 nigris, his minute punctatis, a basi apicem versus ampliatis, 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- 



