vi 



APPENDIX 



Narrow and elongate, the head impunctate, fulvous, very shining, frontal elevations feebly- 

 raised, rather broad, antennae black, the basal joint fulvous, second one shorter than the third, 

 the fourth and following joints subquadrately widened, short, thorax subquadrate, scarcely 

 broader than long, the sides feebly rounded at the middle, the disc deeply transversely sulcate, 

 the sulcus not extending to the sides, impunctate, fulvous, scutellum triangular, fulvous, elytra 

 wider at the base than the thorax, scarcely perceptibly and sparingly punctured, obscure flavous, 

 the sutural and lateral margins obscure piceous, the apex sometimes of the same colour, below 

 and the legs obscure fulvous, the apex of the tibiae and the tarsi blackish. 



Habitat. Biserat, Jalor, Siamese Native States. 



A small species of which two, apparently female specimens, are before me ; the insect is 

 allied to C. nigricornis, Jac, from India, but is much smaller, and differs in the colouration of the 

 elytra and legs ; the male has probably one or other of the joints of the antennae enlarged. 



Haplosonyx batuensis, Jac. 

 The two specimens contained in this collection differ from the type in having flavous 

 antennae with the exception of the first three joints which are black, the amount of purplish 

 colour at the basal portion of the elytra is also rather larger, but there are no other differences 

 whatever between the two forms which are evidently subject to a good deal of variation in regard 

 to colours. Another closely allied species found in Borneo, of which I give the description 

 here, is contained in my collection. 



Haplosonyx shclfordi, sp. nov. 



Black, the antennae, apex of the tibiae and the tarsi flavous, thorax rather remotely 

 punctured, deeply transversely sulcate, elytra fulvous, the basal portion black, finely and very 

 closely punctured, abdomen fulvous. 



Length, 9 mm. 



Head black, impunctate, labrum and palpi flavous, the penultimate joint of the latter 

 strongly inflated, antennae flavous, the second and third joint very short, the fourth very 

 elongate, thorax more than twice as broad as long, the sides straight, the surface deeply 

 transversely sulcate, rather strongly but not very closely punctured, scutellum pointed, black, 

 the extreme apex flavous, elytra very closely and finely punctured, the basal third in shape of a 

 transverse band black, the rest dark fulvous, the breast and legs black, the apex of the tibiae and 

 the tarsi as well as the abdomen flavous. 



Habitat. Borneo (Shelford). 



Almost similarly coloured to H. batuensis but much larger, the elytral punctuation much 

 finer, the colour of the antennae and legs different. 



Haplosonyx robinsoni, sp. nov. 



Broad and robust, pale flavous, the legs partly or entirely black, thorax with a few fine 

 punctures, transversely sulcate at the sides, elytra with indistinct and widely-placed rows of 

 larger punctures, the interstices closely and more finely punctured. 



Var. The antennae with the fourth and fifth and the apical two joints more or less 

 blackish. 



Length, 1 1-1 3 mm. 



