LTGJEUS. 5 



membrane, rostrum, antennae, anterior area of prosternum, and 



the larger portion of meso- and 

 metasterna, about apical half of 

 disk and apex of abdomen black; 

 membrane with a basal and 

 diseal spot both white. 



Var. Head with the base and 

 apex only black ; pronotum and 

 corium without any black mark- 

 ings ; prosternum sanguineous ; 

 meso- and metasterna suffused 

 with piceous. 



Length 9^ to 10 millim. 



Bah. North Khasi Hills 

 (ChenneU) ; Bombay {Dixon). 

 Trivandrum. 



Fig. 2. — OncoiKltus nigriceps. 



Usually found in the Nidoong trees {Eupliorhia neriifoUa, 

 Linn.). R. M. Dixon in litt. 



Genus LYG^US. 



Ly^seus, Fahr. (pro parte) Ent. Syst. iv, p. 133 (1794) ; id. Syst. 



Rhynq. p. 203 (1803) ; Sc§.l, Ofv. Vet.-Ak. Fork. 1872, n. 7, p. 41 ; 



id. En. Hem. iv, p. 99 (1874). 

 Lygseosoma, Fieb. (pro parte) Eur. Hem. pp. 45 & 167 (1861). 

 Lygfeodoii, Puton, Ann. Sue. Ent. Fr. 1869, p. 139. 

 Subg. Melanospilus, Stalagmostethus, Spilostethus, Graptolomus, 



Micropsilus, Melauostethus, Melanerythrus, Stdl, Hem. Fahr. i, 



pp. 72, 73, 75, & 76 (1868). 

 Subg. Cosmopleurus, Melanocorvphus, 8tal, Ofv. Vet.-Ak. Fork. 



1872, n. 7, p. 41. 

 Subg. Hsemobapbus, Melaiiopleurus, Craspeduchus, Ochrostomus, 



Ochrimnus, Stal, En. Hem. iv, pp. 104, lOo, & 113 (1874). 

 Subg. Eulygjeus, Rent. Act. Soc. Fenn. xv, 1888, p. 180. 

 Subg. Tropidothorax, Bergr. Ann. Soc. Ent. Belg, xxxviii, p. 547 



(1894). 



Type, L. militaris, Fabr. 



DistrihiUion. A very extensive genus, almost universally dis- 

 tributed, largely represented in tropical America. Only six species 

 are at present recorded from British India. 



Ly genus differs principally from the preceding genus {Oncopeltus) 

 by having the posterior margin of the pronotum straight ; the 

 seutellum more or less distinctly carinate from about middle to 

 apex ; the clavus posteriorly is subampliated. 



A number of subgenera have been proposed, which really 

 represent sections of a somewhat comprehensive genus, always 

 possessing distinct common characters, though frequently exhibit- 

 ing a more or less divergent facies. The species found in British 

 India, however, are of a typical and little divergent character. 



