416 HEMIPTERA. 



2. ARCHIMERUS triangulum. 



Pachymeria triangulum, Spin. Hem. 133. 2? (1837). 

 a. Jamaica. From Mr. Gosse's Collection. 



3. ARCHIMERUS angustatus. 



Nematopus angustatus, H. Sch. Wanz. vi. 80. t. 207. fig. 651 

 (1842). 



, Brazil. From M. Mornay's Collection. 



b. Lateral angles of the thorax directed forwards. 



4. ARCHIMERUS lunatus. 



Archimerus lunatus, Burnt. Handb. ii. 322. 2 (1835) ; H. Sch. 

 Wanz. vi. 24. t. 188. fig. 580 fy A. (1842). 

 a. Mexico. Presented by E. P. Coffin, Esq. 



5. ARCHIMERUS acanthus, n. s. 



A. praecedenti valde affinis; differt praecipue statura minori et 



graciliori ; thoracis angulis magis prominentibus ; antennis 



albo-pilosis. $ . 



Long. lin. 10. 



Above reddish brown, somewhat opaque, thickly punctured 

 with black. Head sparingly clothed with minute white hairs. 

 Thorax widely crescent-shaped, with the lateral angles very pro- 

 minent, acute and black ; lateral margins with a few minute 

 yellowish teeth. Scutellum with the tip orange. Coriaceous 

 portion of the elytra with a few small yellow spots at the apex ; 

 membrane blackish brown. Margins of the abdomen less pro- 

 minent than in the preceding species and with the posterior 

 angles of the segments less spinous ; banded with red and black, 

 the red being at the base of each segment. Body beneath paler 

 than above, opaque, clothed with numerous short white hairs. 

 Abdomen with an elevated pale line down each side considerably 

 within the stigmata, running to the apical margin of the fifth 

 segment, and within this on each side of the base of the second 

 and third segments, three strong black punctures. Breast with 

 an irregular line of small whitish tubercles on each side. Thighs 

 concolorous with the body, the posterior pair much thickened, 

 with two rows of minute tubercles above and two rows of spines 

 beneath, of which only those placed at the middle of the thigh 

 are of any considerable size ; anterior and intermediate tibiae and 

 tarsi fulvous, thickly clothed with yellowish hairs ; posterior tibiae 

 black on the inner side, with the apex fulvous, entirely fulvous 

 externally, compressed, incurved at the middle and toothed on 

 the inner margin ; posterior tarsi fulvous. Rostrum concolorous, 



