54 Mr. Charles J. Gahan's Revision of 



Cerambyx ignitus, Illig., Mag. fur Insekt., iv, p. 109 (1805). 

 Astathes nitens, Pasc., Trans. Ent. Soc. Lond., (3) iii, p. 350 



(1867). 

 Astathes fabricii, Thorns., Syst. Ceramb., p. 558 (1865). 

 Yar. Astathes apicalis, Thorns., 1. c, p. 558. 

 Astathes humeralis, Heyden, Abb. Sencken. nat. Ges., xxiii, 



p. 578 (1897). 



Head, prothorax and abdomen black ; antennae yellowish or 

 reddish-testaceous, with a variable number of the joints nearest the 

 apex more or less infuscate ; elytra testaceous, with the posterior 

 sixth or seventh part violaceous ; prosternum and hind breast 

 entirely, or in part only, testaceous ; legs variable in colour, the 

 femora and tibise being usually for the most part pitchy-black, but 

 sometimes entirely testaceous. Head and prothorax distinctly, but 

 rather sparsely punctured, the punctures on the prothorax being 

 mostly confined to the centro-dorsal and lateral tubercles; these 

 tubercles not more raised than in the preceding species, and similar 

 to them in form, that is they appear as little more than the median 

 and lateral parts of a sinuate ridge crossing the pronotum from side 

 to side sloping gradually in front, and abruptly raised and rather 

 sharply edged behind. Elytra distinctly enough, but sparsely, 

 punctured, each with two distinct dorsal costae in addition to one 

 alongside the suture, the costae external to these being almost, or 

 quite, obsolete. 



Hal. Sumatka, Nias L, Borneo, Malacca and Siam. 



This species is placed in the Munich Catalogue as a 

 variety of A. splendida, Fab., and so also is A. fulgida, 

 Fab., but it will be seen from the positions which I have 

 assigned to them, that these three species are really very 

 distinct from each other, differing as they do by strongly 

 marked structural characters. A. nitens varies to some 

 extent in colour. In some specimens the elytra are 

 entirely testaceous, or have only the extreme apical border 

 violaceous, while in the type ($) of apicalis, Thorns., from 

 Malacca, the whole posterior third part of the elytra is 

 violaceous. In humeralis, Heyd., described from one ($) 

 example from Baram in North Borneo, the apical fourth part 

 of the elytra is violaceous, a condition somewhat intermediate 

 between that of apicalis and the typical form of nitens. 



28. Astathes caloptera. 



Astathes caloptera, Pasc, Journ. of Ent., i, p. 63 (1860). 

 Astathes cyanipennis, Thorns., Syst. Ceramb., p. 557 (1865). 



