CITA.LCOLAMPRA. 



87 



our faunistic limits only two species have been collected. They 

 are elongate, more or less parallel-sided. The head is as broad as 

 the front margin of the prothorax, the eyes are convex, the 

 antennae are more or less slender. Prothorax quadrate, hardly 

 broader than long ; in many of the Australian species longer than 

 broad, in others the convexity is more pronounced ; within this 

 genus there is much variation in the form of the prothorax. 

 JScutellum narrow and insignificant. Elytra punctate-striate, 

 slightly widened behind. Anterior coxal cavities closed. Claws 

 appen liculate. 



Range. Australia, Tasmania, New Zealand, China, Malay 

 Peninsula, Ceylon, Sumatra, India, Burma, Andaman Islands. 



Key to the Species. 



Elytra with roundish patches of lighter [p. 87. 



colour on a darker background Ch. octodecimguttata, F., 



Elvira with lighter-coloured patches having 



much darker centres Ch. dipa, sp. n., p. 89. 



56. Chalcolampra octodecimguttata, F. 



Chvysomela octodecimguttata. F., Syst. Ent. 1775, p. 100; id., Spec. 

 Ins. i, 1781, p. 12:5 ; id., Mant. i, 1787, p. 70; id., Ent. Syst. i 

 1792, p. 322; id., Syst. El. i, 1801, p. 439; Gmelin, in L., Syst. 

 Nat. ed. xiii, i, 4, 1790, p. 1676; Donovan, Epit. Ins. N. II oil. 

 1800, pi. 2, f* ; Boisd., Yoy. 1 Astrolabe/ Col., 1835, p. 575 ; Baly, 

 Trans. Ent.' Soc. iii, 5, 1855, p. i86, and (3) iv, 2, 1867, p. 281. 



Body elongate, parallel-sided. Ground-colour of head and 

 pronotum light }^ellow-brown ; that of the elytra varies from 

 piceous or black, generally round the margins, to red-brown on 

 the greater portion of the disc. The head has a black patch on 

 the vertex, the pronotum a group of three or five roundish black 

 spots on the middle, of which the two front ones are larger and. 

 each is formed by the confluence of two patches ; there is a great 

 deal of variation in the pronotal markings. Scutellum black. 

 Each elytron on a background of darker colour has the following 

 lighter, yellow-brown, roundish spots : in a longitudinal line 

 between the suture and the middle, four, one basal, the second 

 pre-median, the third post-median and the fourth on the point 

 where the elytron slopes down towards the apex ; in a second 

 parallel longitudinal line, between the middle and the outer 

 margin, a series of four similar spots which are situated 

 respectively nearly parallel with, but slightly in front of, those 

 of the first series. The underside has a background of dark 

 brown colour interspersed with much lighter yellow-brown and in 

 places with black, but the colouring is very variable. 



Bead broad ; eyes convex ; interantennal space deeply and 

 longitudinally excavated in the middle, the areas round the 

 excavation convex ; upper surface finely and sparsely punctate. 

 Antennas passing a little beyond the base of the pronotum ; first 

 segment club-shaped, second small, rounded, third and fourth 



