's RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 



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species under this name. The species of this genus are usually extremely 

 similar in colour, but well distinguishable by the sexual characters, to 

 which Distant pays no attention. Of H. Greeni I have before me numerous 

 specimens from four different places in Ceylon, including Punduloya (the 

 original locality), and it is quite distinct from lineatus. H. albolinecdus 

 is also likely to prove a distinct species. The differences between lineatus 

 and Greeni are given below. 



H. lineatus Eschsch. 



Hemelytra black (rarely dark fus- 

 cous) , with a pure white vitta 

 which is only twice very narrowly 

 interrupted by the black transverse 

 veinlets behind the middle. 



The two last male ventral seg- 

 ments erectly pilose, very conspicu- 

 ously so when seen from the side; 

 if examined from below and behind, 

 the pilosity is seen not to be evenly 

 distributed over the segments, but 

 arranged in two longitudinal rows, 

 one on each side, the hairs near 

 the apex of the last segment arising 

 from a slightly raised oblong tuber- 

 cle. Ventral margin of last segment 

 seen in profile straight, only slightly 

 raised near apex on account of the 

 longitudinal tubercle. 



First male genital segment with 

 the latero-apical angles pointed, ter- 

 minating in a small prominence so 

 that the segment, if looked at from 

 above or beneath, appears to be 

 tricuspidate at apex, the lateral cusps 

 being much smaller than the me- 

 dian one. 



H. Greeni Kirk. 



Hemelytra fuscous (never black), 

 with a dingy whitish vitta which 

 is four (sometimes five or six) times 

 broadly (very seldom narrowly) in- 

 terrupted. 



Penultimate male ventral seg- 

 ment very sparingly and shortly 

 pilose; last male ventral segment 

 near the base on each side with a 

 minute tubercle, and a little before 

 apex with a transverse elevation, 

 the tubercles and particularly the 

 transverse elevation shortly erectly 

 pilose. Ventral margin of last seg- 

 ment seen in profile distinctly si- 

 nuate owing to the basal tubercles 

 and the subapical transverse ele- 

 vation. 



First male genital segment with 

 the latero-apical angles obtuse, the 

 segment therefore at the apex only 

 with the usual median spine. 



The fuscous breaks in the white hemelytral vitta of H. Greeni some- 

 times occupy more space than the white parts, and in Kirkaldy's type the 

 vitta was probably almost wanting, as he does not mention it in his 

 description. 



