230 LACTICA SUTURALIS. 



an elongate black triangular mark , common to both elytra, 

 comraenciug a little before the middle and extending nearly 

 to the apices where it is very pointed , and connected by 

 the suture with a small black spot placed at the extre- 

 mities of the elytra. Below and the legs black; the poste- 

 rior tibiae with a small spine; the first joint of the posterior 

 tarsi as long as the two following ones together; claws 

 appendiculate ; anterior coxal cavities open. 



Hab. Sumatra or.: Tandjong Morawa, Serdang (Dr. Hagen). 

 — Two specimens. 



The only difference in regard to structural details, when 

 the species , described here is compared with some of the 

 more typical forms from the New World , is the strong 

 development of the frontal tubercles which in Lactica are 

 generally obscure. L. suturalis is the second species now 

 known from Sumatra. 



Aphthona{?) cyanea, n. sp. 



Below black ; antennae long , the three first joints and 

 the tibiae and tarsi , flavous ; above metallic blue ; thorax 

 very finely , elytra distinctly and closely punctured. — 

 Length V/^ ^i^^. 



Head impunctate , metallic blue , lower part of face ob- 

 scure piceous; the frontal tubercles in shape of narrow 

 transverse ridges , the clypeus with a strongly raised cen- 

 tral ridge; antennae nearly as long as the body, black, 

 the three lower joints fulvous or flavous , the second and 

 third joints very short, moniliform , the fourth as long as 

 the three preceding ones together , the others still more 

 elongate. Thorax transversely subquadrate , about one half 

 broader than long, the sides nearly straight, slightly nar- 

 rowed towards the base, the anterior angles obtuse, fur- 

 nished with a single hair, the surface with a few fine 

 punctures, very obsoletely depressed across the disc. Scu- 

 tellum broadly trigonate. Elytra parallel , narrow , the 

 shoulders scarcely produced, rather strongly and closely 



Notes from th.e Ley den MLuseuxn, "Vol. IX. 



