Mr. W. L. Distant on Pentatominjc. 389 



Genus ToLUMNiA. 



Tolumnia ceola. 



Pentatoma cBola, Dall. List Hem. i. p. 248. n. 38 (1851). 



Second joint of antennse slightly longer than the third, 

 apical margin of corium slightly concave. Other characters 

 generally as in Tolumnia. 



Genus TiBRACA. 

 Tibraca Umbaliven tris, 



Tibraca limbativentris, Stal, Bidr. till Rio-Jan. i. p. 19 (1858). 



Mormidea basalis, Walk. Oat. Het. iii. p. 553 (1868). 



Mormidea Walkeri, Leth. & Sev. Cat. Gen. Hem. t. i. p. 124 (1893). 



Tibraca basalts, Dist. Ann. & Mag. Nat. Hist. ser. 7, vol. iv. p. 438 (1899). 



Since placing Walker's species in the genus Tibraca (supra) 

 I have examined Stal's type of T. Umhativentris, and tind 

 them both conspecific. 



Genus Eysarcoris. 



Eysarcoris subarmata. 



Hoplistodera annata, Walk. Cat. Het. ii. p. 266. n. 7 (1867). 



Closely allied to E. guttigera, Thunb. Scutelluni a little 

 longer, pronotal angles very slightly more produced. 



Eysarcoris ? insurgens. 



Hoplistodera insurgens, Walk. Cat. Het. ii. p. 265. u. 5 (1867). 



This species has the pronotal angles prominently and acutely 

 produced and directed slightly forward. Excluding this 

 character it is allied to E. guttigera^ Thunb. 



Eysarcoris'^ cenescens. 



Hoplistodera cenescens, AValk. Cat. Het. ii. p. 266. n. 6 (1867). 



Very closely allied to the preceding species, but differing 

 by having the apices of the pronotal angles slightly recurved. 



Eysarcoris alienus, Walk. Cat. Het. ii. p. 275. n. 15 (1867). 



This species is founded on a single specimen without abdo- 

 men. Walker describes the sternal process, which " is forked 

 hind ward," but proceeds to remark that " it differs somewhat 

 from the typical form of Eysarcoris, but liardly sufficient to 



