358 Dr. David Sharp on some 



head and thorax, but not quite so close. The mesostemal lamina 

 is largely developed but very slender, and the pohshed space on 

 the metasternum is sparingly and obsoletely punctate. 



This species has in appearance a good deal of 

 resemblance to the genus Pelosoma, but the very slender 

 mesosternal lamina quite removes it from the genus 

 in question, and it may be placed near the Japanese 

 C. olihrus. 



Dikoya, Bogawantalawa, Kandy. 



Megasternwn nigrovittatum. 



PacJiysternum nigrovittatum, Motsch., Bull. Mosc, 

 1863, i., p. 447. 



The genus PacJiysternum, founded by Motschoulsky for 

 this insect, op. cit., p. 446, must fall as a synonym of 

 Megasternwn; Motschoulsky compared his genus only 

 with Cryptopleurum, from which it is, of course, abun- 

 dantly distinct, and says nothing about its relations 

 to Megasternwn, from which I see nothing to distin- 

 guish it. 



Mr. Lewis found one specimen of M. nigrovittatum at 

 Kitulgalle. 



Aemostus, gen. nov. 



Corpus rotundato-ovale, convexum. Prothorax utrinque ad 

 marginem anteriorem profande excavatus. Mesosternum processu 

 maxime elevate, facie inferiore polito fortiterque punctato, ovali, 

 instructum. Metasternum in medio elevatum, politum fortiterque 

 punctatum. Tarsi breves, posteriores articulo basali sequentibus 

 tribus conjunctis aequaU. 



Mentum with deep punctures, emarginate in front ; projecting 

 from its front margin there is a very dense ciliation; maxillary 

 palpi slender and rather elongate, terminal joint aciculate. Pro- 

 sternum with a sharp carina along the middle of the transverse 

 process in front of the coxae, and on either side of this process with 

 a large deep excavation for the reception of the club of the 

 antennae. Basal ventral segment carinate along the middle. Hind 

 tarsi rather short, the basal joint thicker than the others. 



This genus is established for a single species allied to 

 Oosternimi, but differing by the large unimpressed men- 

 tum, by the large antennal cavities, and the very 

 remarkable development of the mesosternal and meta- 

 sternal elevations, as well as by the compressed and 



