636 G. LEWIS 



quinquestriatum, Motsch. Bull. Mosc. 1863, II, 



p. 454; Lewis Ann. Mag. Nat. Hist. 1885, p. 461. 



About 80 examples have been taken in Birmania , at Bhamò , 



and Shwegoo-Myo and in Tenasserim at Kawkareet and Thagatà. 



19. Piatysoma suturale, n. sp. 



Oblongo-ovatum, subdepressum, nigrum, nitidum; fronte concava 

 stria recta; pronoto stria integra; elytris striis 3 primis dorsalibus 

 integris, 4 valde abbreviata, 5 apicali, suturali utrinque abbreviata ; 

 propygidio subfoveolato transversim punctato; pygidio grosse et 

 dense punctato, margine distincte elevato. Long. 5 mill. 



This species belongs to the group containing striale Mars, and 

 sexstriatum Lew., but it is more parallel than these species, and 

 the pygidium is much more strongly elevated at the sides. The 

 sternal plates correspond with those of atratum Er. 



Two examples from Bhamò, Birmania, August 1885. 



20. Piatysoma exortivum, n. sp. 



Ovatum, parum depressum, subquadratum , nigrum nitidum, 

 undique tenuissime punctulatum; antennis pedibusque piceis; fronte 

 subplana stria integra utrinque sinuata; pronoto lateribus marginato, 

 stria interna integra; elytris striis' tenue punctatis, dorsalibus 3 

 primis integris, 4-6 abbreviatis; propygidio pygidioque vix dense 

 punctulata; prosterno haud striato, lobo deflexo punctulato; m-eso- 

 stemo tenue sinuato, marginato^ stria integra. Long. 3 l / 4 mill. 



In size, outline and convexity, this species resembles carolinum 

 Payk. , but there the similarity ends. Like Piatysoma brevistriatum 

 the lateral margin of the thorax can only be seen if viewed side- 

 ways and the internal stria widens out in the middle of the late- 

 ral edge and leaves a rather wide interstice. At the post-ocular 

 angle the marginal stria rises and joins the internal stria. The 

 forehead is almost on one plane and therefore different to most, 

 if not all, the species of the genus. The elytral striae are pun- 

 ctulate and differ from carolinum in the 6, or suturai one, which 



