PHYTOPHAGA FROM SUMATRA 425 



Hah. Padnng, Si-Rambé, Caucr. 



A small species, allied to L. si/i/zhairaoisis , Jac. but with 

 differently coloured underside and distinct thoracic sulcus , the 

 punctuation of the thorax is scarcely perceptible and that of 

 the elytra, although distinct, so clos(^ tliat the arrangement of 

 the punctures in rows is only ap}iarent here and there, when 

 the insect is viewed in certain lights. 



()0. Longitarsus Gestroi, n. sp. — Testaceous the labrum, the 

 scutellum and the posterior femora piceous, thorax and elytra 

 nearly impunctate. 



Length I ^^ line. 



Head impunctate, the frontal elevations obsolete, transverse, 

 clypeus rather broad , distinctly raised and narrowed between 

 the antennae, labrum black, palpi slender, flavous, antennae 

 scarcely extending to the middle of the elytra, flavous, the ter- 

 minal joints more or less stained with piceous, the second joint 

 half the length of the first but only a little shorter than the 

 third joint, the following joints equal, scarcely thickened, thorax 

 one half l)roader tlian long, the sides straight, the anterior and 

 posterior angles oldique, the surface rather convex, impunctate, 

 scutellum black or piceous , l)roader than long , elytra nearly 

 parallel, not perceptibly punctured but covered with small pi- 

 ceous spots , wings present , the sides of the breast and the 

 jiosterior femora piceous , posterior tibiae strongly widened 

 towards the apex and broadly chanelled, with a distinct spur, 

 the first joint of the posterior tarsi , scarcel\ longer than the 

 following three joints togetlier, the first joint of the anterior 

 tarsi widened in the male. 



Hub. Benculen, April 1891. 



This Longitarsus resembles many European and Asiatic species 

 in coloration , but may be known by the dark scutellum anrl 

 the comparatively short metatarsus of the hind legs , which is 

 however still longer than in most species of Aphthona; the last 

 abdominal segment of the male has a central very narrow groove 

 extending through its entire length. 



01. Longitarsus sumatrensis, n. sp. — Below piceous, antennae 



