CARABIDAE FROM BURMA ' 333 



tooth in the emargination of the mentum is of little systematic 

 importance, as some typical Plalymeto'pi e. g. P. corrosus (Bates) 

 have a precisely similar tooth, the simple emargination therefore, 

 usual given as distinctive of Platymetopus is not constant; a 

 more constant character of Platymetopus is the arcuated emar- 

 gination of the epistome , . which , together with the facies and 

 the prevalence of a short and depressed forehead, seems to 

 distinguish the genus effectively from Hypolithus. The ligula , 

 narrow and porrected, and shorter than the much broader 

 paraglossae, is the same in Platymetopus corrosus and P. (?) se- 

 milaevis and allies. Siapelus (Murray) is distinguished by its 

 extremely short almost hidden ligula and paraglossae. The mandi- 

 bles in P. (?) semilaevis are asymmetrical; both very broad from 

 the base to beyond the middle but the sinistral much more abruptly 

 narrowed and more strongly curved at the apex than the dextral. 



159. Platymetopus (?) amariformis, n. sp. 



Oblongus, fusco-aeneus nitidus, palpis antennis et pedibus 

 rufo-testaceis. Caput laeve nee dilatatum nee depressum, episto- 

 mate antice perparum arcuato, foveis frontali bus breviter extus 

 curvatis. Thorax valde transversus, antice convexus, rotundatus, 

 postico subcurvatim leviter angustatus, angulis posticis breviter 

 exstantibus ex quo angulis baud obtusis, toto basi rugoso-punctu- 

 latus margine laterali rufescenti. Elytra oblonga, apice minus 

 oblique sinuata, striata, interstitiis (3-externis prope apicem punc- 

 tulatis exceptis) laevissimis, planis, 3.'°, 5.*° et 7.™" uniseriato- 

 punctatis. Tarsi supra glabri, posticis gracilibus art. 1.""° elon- 

 gate. Mentum edentatum sed fundo medio pauUo prominenti. 

 c/'. Tarsi 4 antici parum dilatatis articulis quatuor subtus albo- 

 squamulatis. — Long. 7 ^2 millim. 



Toungoo ; Kawkareet (Tenasserim). 



The head is small and presents none of the peculiarities of 

 the typical Platymetopi. 



160, Amblystomus magnus, n. sp. 



Hispalis flavipes, Motsch , Etud. Ent., 1858, p. 24? 



