420 HEMIPTERA. 



3. MEROCORIS tristis. 



Merocoris tristis, Perty, Del. An. Art. 171. t. 34. fig. 2 (1830) ; 

 Am. fy Serv. Hem. 244. 1. pi. 5. fig. 1 (1843). 



a. . Presented by M. Audinet Serville. 



b. Para. From Messrs. Wallace and Bates' Collection. 



Genus 20. MEROPACHUS. 



Meropachus, Lap. Hem. 27 (1832); Spin. Hem. 130 (1837) $ 



Tav. Sin. Hem. 41 (1850). 

 Meropachys, Eurm. Handb. ii. 322 (1835); Am. $ Serv. Hem. 



198 (1843) ; H. Sch. Warn. ix. 240 (1850). 



1. MEROPACHUS nigricans. 



Meropachus nigricans, Lap. Hem. 28. pi. 53. fig. 1 (1832). 

 Meropachys nigricans, Eurm. Handb. ii. 322. 1 (1835). 



a. Brazil. From M. Mornay's Collection. 



b. . From Mr. Children's Collection. 



2. MEROPACHUS affinis, n. s. 



M. prsecedenti valde affinis, sed major, scutello longiori, apice 

 emarginato, carina longitudinali magis elevata. . 

 Long. lin. 8. 



Meropachys nigricans, Am. & Serv. Hem. 199. 1. pi. 5. fig. 5? 



(1843). 



This species is very closely allied to the preceding, but has the 

 thorax more strongly and closely covered with tubercles, and its 

 lateral angles more acute ; the scutellum, especially the portion 

 behind the constriction, much longer, with the apex finely but 

 distinctly emarginate, the lateral margins and the central ridge 

 more distinctly elevated. It seems probable that this is the 

 insect described by MM. Amyot and Serville as M. nigricans, 

 although only the female is said by them to have the scutellum 

 emarginate at the apex. 



a. Brazil. From M. Mornay's Collection. 



3. MEROPACHUS alternatus, p.s. 



M. prsecedentibus affinis, scutello breviori, apice emarginato, 

 lateribus subrectis ; femoribus nigro-tuberculatis, tibiis posticis 

 nigro-bifasciatis ; abdominis lateribus luteo nigroque variis. ? . 

 Long. lin. 7- 



Head and thorax brownish testaceous; thorax rather thickly 

 and strongly punctured, several of the punctures being black, 



