•Mr. J. S. Baly on new Genera and Species of Gallerucidse. 247 



For the drawings which illustrate this paper I am indebted 

 to the kindness and skill of the accomplished artist, Mr. Robert 

 Farren. 



EXPLANATION OF PLATES X. & XL 



[All the figures are of the natural size.] 

 Plate X. 



Fit/. 1 . Crioceras occultus, Seeley : a, lateral view ; b, ventral view, showing 

 how the dorsal spines indented the succeeding whorl ; c, a section 

 and septum ; d, dorsal view. 



Fig. 2. Ammonites cozlonotus, Seeley. 



Fig. 3. , var. 



Fig. 4. glossonotus, Seeley. 



Fig. 5. leptus, Seeley. 



Plate XL 



Fig. 1. Ammonites sexangulatus, Seeley. 



Fig. 2. cratus, Seeley. 



Fig. 3. Woodwardi, Seeley. 



Fig. 4. pachys, Seeley. • 



Fig. 5. acanthonotus, Seeley. 



Fig. 6. Var. of A. Renauxianus, Pictet & Camp. 



Fig. 7. A. rhamnonotus, Seeley. 



XXVIII. — Descriptions of new Genera and Species o/Gallerucida?. 

 By J. S. Baly. 



Fam. Galleracidae. 



Snbfam. HALTiciNiE. 



Genus Sim^ethea. 



Corpus elongatum, parallelum, subcylindricum. Caput exsertum, 

 fere perpendiculare, pone oculos constrictum ; oculis orbitu circum- 

 datis, prominentibus, integris ; facie inter antennarum insertiones 

 elevata ; encarpis triarigularibus, supra fossa transversa profunda 

 terminatis ; antennis corporis longitudini fere rcqualibus, filiformi- 

 bus, articulis cyliiidricis, primo breviter curvato, a basi ad apicem 

 paullo incrassato, secundo brevi, obconico, tertio adprimi longitudinem 

 yequali. Thorax transversus, ba?i vix transversim sulcatus, disco 

 convexus, lateribus anguste marginatis, rotundatis, angulis anticis 

 dente obtuso armatis. Elytra thorace paullo latiora, parallela, apice 

 subacute rotuudata, supra convexa, regulariter punctato-striata. 

 Pedes robusti ; coxis anticis non contiguis, suberectis ; femoribus 

 paullo, posticis magis incrassatis, bis subtus non sulcatis ; tibiis 

 omnibus apice spina acuta armatis ; tarsorum posticorum articulo 

 jiriino duobus sequentibus paullo breviore ; unguiculis appendieu- 

 latis. Prosternum distinctum sed angustissimum. 



Type, Simcethea Laportei, Baly. 



Simathea must be placed in close proximity to Podagrica. In 



