60 Phytophaga Malayana. 



sity ; the second commencing at a tubercle on the basal margin, half- 

 way between the suture and humeral callus, runs nearly parallel to 

 the first, and ends abruptly at its apical tuberosity ; the third, arising 

 from the humeral callus, runs obliquely inwards to join (by means 

 of a strongly raised transverse tuberosity) tlie second ridge at its 

 middle ; from this point a longitudinal branch runs downwards 

 parallel to the remaining portion of the second ridge, and joins a 

 tubercle at the commencement of the apical portion of the disc ; 

 the fourth ridge, parallel to the outer margin, is united about its 

 middle to a transverse tuberosity on the outer disc ; and on the 

 apical region are five or six strongly raised, irregular tuberosities. 



Genus Exema, Lac. 

 Mon. Phyt. ii. p. 81-4. 

 ] . Exema Malayana, n. sp. 

 Oblongo-elongata, nigra, subopaca, crebre et profunde rugoso- 

 punctata ; thorace dorso gibboso, supra sex-carinato, crebre 

 elevato-reticulato ; elytris utroque disco lineis tribus indis- 

 tincte elevatis tuberculisque nonnuUisante apicem instructis; 

 pygidio tricarinato. 

 Long. 1^ lin. 

 Hab. Malacca (Mount Ophir), Makassar, Flores. 



Head closely punctured, the interspaces forming raised reticu- 

 lations over the surface. Thorax strongly gibbose, the gibbosity 

 narrowed posteriorly into an acute angle, its surface covered with 

 six raised carinae; the middle pair parallel, confluent at their base, 

 produced anteriorly to a short distance within the apical border 

 of the thorax ; the four others arise two on either side from the 

 central pair, and run obliquely outwards and forwards down the 

 sides of the gibbosity ; whole surface of thorax closely punctured, 

 and covered in front with more or less distinct raised reticulations. 

 Elytra parallel, more coarsely and deeply punctured than the 

 thorax, the disc of each furnished with three indistinctly-raised 

 lines ; the first of these commences a short distance below the 

 base, near the scutellum, and, running nearly parallel to the 

 suture, terminates a short distance below the middle of the latter ; 

 the second, tuberculate at its base, commences at the basal 

 margin, halfway between the suture and humeral callus, runs 

 nearly parallel to the first, and ends by uniting with its apex 

 by means of a short transverse ridge ; the third, arising from 

 the humeral callus, runs obliquely inwards to join the second at 

 about the middle of its course, a short ridge connecting the 



