26 E. T. Atkinson — Notes on Indian Rhjncliota. [No. 1, 



4. Poseidon malayanus, Vollenhoven. 

 Poseidon malayanus, Voll., Tijds. Ent. Ned. viii, p. 64, 1. 1, f. 3-5 (1865). 



d, 9. Bronzed black above : eyes brownish-wliite : two spots and 

 two lines encircling the tylas, these lines in the S are in the middle of 

 the median cephalic horn : two small spots near the anterior margin of 

 the pronotum, a thin line along its entire lateral margin and two round 

 spots on the scutellnm near, and a fine line aronnd, the anterior margin, 

 orange : scutellnm rather strongly and pronotum more weakly punc- 

 tured, head smooth : hemelytra piceous-brown : antennse weakly pilose, 

 black, with the joints whitish : rostrum ferruginous : body beneath 

 shining black, except pectus which is dull cinereous : each segment of 

 the abiomen in the $ has two small orange spots on each side on the 

 margin: feci black, tarsi brownish (VolL). $y long, 15; 9, long, 13 

 mill. 



Reported from Malacca, India ? 



Genus Brachtplatts, Boisduval. 



Voj. Astrolabe, Ent. ii, p. 627 (1832) : Westwood in Charlesworth's Mag. Nat. 

 Hist, ii, p. 26 (1838) ; White, id., iii, p. 539 (1839) : Dallas, List Hem. i, p. 61 (1851); 

 Walker, Cat. Het. i, p. 98 (1867) : Stal, Hem. Afric. i, p. 8 (1864) ; En. Hem. v, p. 4, 

 7 (1876) : — Includes Coptosoma, subg. Platycephala, Lap., Ess. Hem, p. 74 (1832). 



Body very broadly ovate, generally slightly convex above, flat 

 beneath : head foliaceous, transverse, broad, broadly rounded at the 

 apex; vertex 4-5 times broader than the eyes ; antennae remote from the 

 eyes, tbe first joint not longer than the third, almost equal in length : 

 eyes slightly transverse, not oblique, slightly immersed, strongly pro- 

 minulous beyond the sides of the head, narrowed outwards : ocelli a little 

 more distant from each other than from the eyes : pronotum about one 

 half broader than the head, sinuated at the apex behind the vertex, 

 truncated behind the eyes, anterior angles obtuse, rounded at the apex, 

 not produced. As pointed out by Westwood, the scutellum in the S , in, 

 both Brachyplatys and Coptoso7na, is notched and in the ? , entire. In 

 the former the sixth ventral segment, in the d , is produced forwards in 

 an acute angle reaching the base of the fifth segment, and in the ^ , 

 forms anteriorly a less produced right or somewhat obtuse angle : in 

 Coptosoma, the same segment forms an obtuse, or very obtuse angle, or 

 is merely obtusely rounded. In Brachyplatys, the first joint of the 

 last tarsi is nearly as long as the second, and in Cojptosoma is much 

 shorter. 



