378 Mr. C. O. Waterhouse on the 



aticornis, Dej." This was adopted by Chevrolat, and by the 

 late Adam White, in the British-Museum collection [but not 

 in his catalogue], and as I had not, when I wrote my descrip- 

 tions of Madao-ascar Macrotomce, discovered this erroneous 

 determination, it is to this " serripes " that I alluded m the 

 description of M. ohscura (Ann. & Mag. Nat. Hist. v. (1880), 

 p. 410). My description is, however, not materially affected 

 by the reference. 



The following species appear to be undescribed : — 



Macrotoma signaiicollis^ sp. n. 



cJ . Dark brown, the head, base of the antennae, the thorax, 

 and front femora nearly black. Basal joint of the antennaj twice 

 as long as broad, very rugose ; tlie third joint as long as the 

 fourth, fifth, and half tlie sixth together, very rough, and 

 closely spinose beneath; the following joints with a few large 

 punctures, the fourth and fifth with a few small spines beneath ; 

 the extreme apex of the eighth, the base and apex of the 

 ninth, and the whole of the tenth and eleventh joints longitu- 

 dinally grooved. Thorax one quarter narrower in front than 

 at the base, densely punctured on the disk, somewhat rugose 

 on the sides ; the lateral spines moderately long : on the fore 

 part of the disk there are two elongate, oblique, uneven, 

 slightly more shining impressions : there is a short, obscure, 

 smooth line running from the middle of the disk to the base, 

 which has a narrow more shining border. The elytra are 

 parallel and convex, somewhat rugosely sculptured, especially 

 near the scutellum ; the apical sutural angle distinctly denti- 

 form. Anterior femora asperate and rather closely spined 

 beneath. The anterior tibise very rough and closely spined. 

 The posterior femora shining, with a few obscure punctures, 

 and with a series of small spines beneath ; the tibia? not very 

 closely asperate-punctate, with a few short fine spines on both 

 edges. Prosternal process arched, unusually broad and flat, 

 {. e. the middle is not raised above the level of the margins ; 

 opaque, densely and finely punctured. Metasternum opaque, 

 densely and finely punctured ; the central part shining and 

 pubescent, finely but obscurely punctured, with an admixture 

 of larger punctures ; the dull and shining parts divided by a 

 sharply defined line. Abdomen smooth and shining, with 

 irregular punctuation at the sides, and there is some obscure 

 punctuation at the base of the basal segments. 



Hah. ? One of the examples bears the label " Africa, 



T. B. Bering-ton." It is, however, so completely an Indian 

 form that I think there must be a mistake in the label. The 

 species should be placed between M. htzonum and M. EUtotiy 



