1873.] J. Wood -Mason — Species of JPhasmidce. 55 



scytale, Bates, if one may judge from the published figures of those 

 species. With regard to the last mentioned, it should he noted that Mr. 

 Bates, although he states its affinities to he with the first, at the same 

 time refers it to a totally distinct suhgeneric group, viz., to Ramulus, de 

 Sauss., in which the abdomen is fusiform and acuminate at the extremity. 

 It is also to be remarked that the species to which B. scytale is said to 

 be so nearly related hy Bates has turned out not to be a Bacillus at 

 all, but a Lonchodes very closely allied indeed to L. pseudoporus, Westw., 

 if not identical with that species. Bamulus is, however, still retained by 

 M. de Saussure for a group of the Bacilli, under which B. Jiumilis, Westw., 

 B. carinulatus, Sauss., &c., have been arranged. 



Bacillus scabriijscultjs, n. sp. PI. VII. Fig. 1. 



Very robust. The integument is wrinkled and studded with 

 granulations and small tubercles. Head thick, coarsely granulated, very 

 little narrowed behind, armed between the eyes with two conical spines, 

 projecting outwards and slightly backwards and with their bases united by a 

 transverse elevation, bi-tuberculate posteriorly. Antennae as long as the 

 metathorax, 18-jointed, ciliated ; the first is depressed and expanded, and 

 strongly carinated ; the second joint is about half the length of the first, 

 twice as long as broad and depressed ; the rest are slenderer than it and 

 filiform. Prothorax narrower in front, with its anterior margin hollowed for 

 the reception of the head, covered with coarse granules. Meso- and 

 meta-notum irregularly wrinkled longitudinally and covered with small 

 tubercles or coarse granules, marked with a raised median line ; the former 

 gradually v^^idens from the apex to the insertion of the intermediate legs ; 

 the latter is broader and of uniform width, and a distinct suture divides it 

 into an anterior posterior division (the true 1st abdominal segment = segment 

 mediate^ . Below, the ganulations and wrinkles are finer. The abdomen is 

 cylindrical to the fifth or sixth segment, whence it becomes suddenly contracted 

 and compressed, but expands again slightly at the apex which is furcate ; the 

 bottom of the fork is occupied by a small carinated azygos plate. The 

 upper contour of the three terminal dorsal segments is extremely convex 

 and the posterior margin of the first two of them is produced into a small 

 process. The operculum is lanceolate in outline as seen from below, its 

 posterior half is carinate and its apex barel^'' reaches the level of the minute 

 cerci. 



Legs long ; anterior pair triquetrous, the rest prismatic ; anterior femora 

 serrated to the middle of the upper crest ; the intermediate ones are armed 

 with three conspicuous dentate foliaceous lobes above and with three small 

 spines on the other crest, one opposite to each of the foliaceous lobes ; the 

 posterior femora have some small spines on each of their upper crests. The 



