110 Christmas Island. 



58. Rhyncholobus discoidalis, Waterh. 



Fiezonotut diseoiclalis, Waterh. : P.Z.S., 1887, p. 521, fig. 3. 



This species, to whicli a female example obtained by Mr. Andrews 

 may possibly belong, was described from a single male specimen 

 from Christmas Island. It differs from the preceding species in 

 having a somewhat broader prothorax, which is more densely and 

 sharply granulate above, and marked with a broad black band 

 along the middle ; the elytra also are somewhat more granulate, 

 and the punctures along the striae less distinct ; the third joint of 

 the funiculus is distinctly longer than the fourth. The female 

 specimen referred to differs from the male type in having a line 

 of green scales along the middle of the pronotum, dividing the 

 longitudinal black band into two ; as well as by those characters 

 which, in the generic description, I have indicated as being sexual. 



59. Rhyncholobus vittatus, Gahan, sp.n. (PL XI, Fig. 6.) 



(J. Viridi-squamosus ; vitta lata longitudinali prothoracis, vitta 

 suturali et vitta utrinque medio disco elytrorum, nigris ; prothorace 

 quam longiore sat distincte latiore ; antice posticeque sat fortiter 

 angustato, basi quam apice paullo latiore ; elytris punctato-striatis, 

 interstitiis disco elevatis, seriatim regulariterque granulatis ; scapo 

 antennarum apicem prothoracis paullo superante, articulis 3° 4° que 

 funiculi unitis quam articulo 2° distincte longioribus ; rostro ad 

 apicem lobato. 



Long. 9, lat. 4 mm. 



"With a broad black band along the middle of the pronotum ; 

 with a sutural vitta and a broad band along the middle of each 

 elytron, also black ; the rest of the upper surface covered with 

 green scales. Antennae a little longer and more slender than in 

 the other species of the genus ; third and fourth joints of the 

 funiculus each much longer than broad, and taken together 

 distinctly longer than the second joint. Prothorax somewhat 

 hexagonal in form, being obtusely angular on each side just in 

 front of the middle, with the sides converging strongly both before 

 and behind; a little broader across the base than at the apex; 

 upper side distinctly and rather densely granulate, especially along 

 the black band. Elytra slightly convex above; punctate -striate, 

 with the interstices between the striae on the disk sub-costate and 

 carrying each a single row of granules ; those between the striae 

 on the sides being flattened, and less strongly and less regularly 

 granulate. Inner margins of the tibite obsoletely denticulate. 

 Posterior (or inside) face of the hind femora flat and smooth, 

 shining black. Truncated end of hind tibiae moderately broad. 



