RHTKCHIUM. 353 



c^. Second and following segments of abdo- 



iueu broadly bordered posteriorly with [p. 354. 



reddish brown R. hixmorrhoulale, 



b^. Second and following segments of abdo- 

 men entirely black li. alnim, p. 355. 



b' , Wings only slightly fuscous at base ; basal 

 segment of abdomen eutirel}' reddish 

 brown or black at base, broadly bordered 



with reddish brown , R. brunneum, p. 355. 



b. Wings fuscous or fusco-hyaline. 



a'. Wings entirely deep fuscous brown with a 

 purple effulgence ; abdomen without 

 yellow transverse bands. 

 a^. Abdomen dull orange-brown. 



a*. Basal abdominal segment black .... R. mellxjii p. 356. 

 b^. Basal abdominal segment orange- 

 brown, with a transverse black mar- 

 ginal band R. abdominale^ p. 357. 



6^. Abdomen entirely black R. aryentatum, 



c^. Abdomen black, sides of segments 3-5 [p. 358. 



marked with orange-red R.bengalense, p, 359. 



h'. Wings fuscous along the costal margin of 

 fore wing, hyaline or fusco-hyaline pos- 

 teriorly ; abdomen black. 

 a^. Median segment with the sides produced 



posteriorly, angular and dentate R. nitidulum, p. 357. 



b^. Median segment with the sides rounded 



posteriorly, not angular R. metullictmi, p. 358. 



c'. Wings fusco-hyaline ; abdomen black with 



transverse yellow bands : § only known. 



a*. Clypeus black ; basal two abdominal 



segments with narrow yellow me- [p. 359, 



dially interrupted bands R.Jlavomarginatum, 



b^. Clypeus yellow; abdominal segments 



1-5 with broader yellow bands not [p. 3G0. 



medially interrupted R. Jlavolineatum, 



623. Rhynchium erythropus, n. sp. 



2 . Head, thorax, and abdomen shining, very closely, evenly, 

 and somewhat coarsely pnnctured, the bases (ordinarily not seen) 

 of the 2nd and following segments of the abdomen broadly smooth ; 

 clypeus shield-shaped, raised, broadly flat down tho middle, 

 broadly truncate and slightly emargiuate anteriorly ; a very short 

 trident-shaped carina between the antenna? ; abdomen with the 

 basal segment distinctly narrower than the 2nd. Intense black, 

 two small spots immediately above the base of the antenna^, a line 

 on the outer side of the scape of the latter, and the apical joint of 

 the fore tarsi above, yellow ; the intermediate and posterior femora 

 blood-red ; the sides and the truncated apex of the median segment 

 with a little thin short hoary pubescence ; wings fusco-hyaline 

 with a rich purple effulgence, the base clear hyahne. 



Hah. Tenasserim. $ . Length 14 ; eocp. 34 mm. Type iu the 

 British Museum. 



VOL. I. 2 a 



