348 Miscellaneous. 



the last-named subgenus one known and three new species, pointing- 

 out that these agreed together in having the last dorsal abdominal 

 segment longitudinally grooved, and mentioning, in the description 

 of each species, the presence, in the posterior border of this segment, 

 of an emargination filled by a well-developed supraanal plate, which 

 is invariably to be found in the females of all species of Lonchodes. 

 I have long felt convinced that the insect of which a description is 

 appended was the male of my Bacillus (Baculwm) insignis, but have 

 thought it better to wait for evidence confirmatory of the fact. This 

 has at length reached me from Ceylon, thanks to Mr. Hugh Nevill, 

 C.C.C., who has been kind enough to send me, amongst other species of 

 great interest and value, the two sexes of an insect agreeing admirably 

 with M. de Saussure's * description of L. pseudoporus, Westw. 



The discovery of the male of B. insignis will obviously also neces- 

 sitate the transference of the following species to the genus Lon- 

 chodes : — Bacillus cunicularis et hyphereon, West. ; B. patellifer et 

 scytale, Bates ; B. ramosus, Sauss., B. Penthesilea et furcillatus, Wood- 

 Mas. : and I strongly suspect that B. Woodivardi et scahriuscidus 

 will eventually have to follow them to the same genus. 



Lonchodes insignis. 



§ ■ Bacillus (Baculum) insignis, Wood-Mason, Journ. A. S. B. vol. xlii. 

 1873, pp. 51 & 52, pi. v. figs. 1 & 2. 



cJ . Body of excessive tenuity. Antennae perfectly filiform, 24- 

 jointed, reaching nearly to the apex of the anterior femora. The 

 head is almost a complete miniature of that of the female, and, in the 

 specimen from which the dimensions given below are taken, has two 

 minute tubercles between the eyes, representing the well-developed 

 horns of the opposite sex. Three dark dorsal streaks, one median 

 and two lateral, pass along the whole length of the body from the head 

 to the end of the sixth abdominal segment. Both meso- and rneta- 

 thorax are dilated at either end, but especially at the insertion of the 

 legs, and have each a raised median dorsal carina. The six basal 

 abdominal segments are slightly expanded at each end, as in spirit 

 specimens of the female ; the seventh and eighth are shorter than the 

 preceding, subequal, and gradually widen, the former from the base 

 to the apex, the latter from the apex to the base ; the last is scarcely 

 longer than these, and cleft for rather more than a third of its length, 

 but the sides of the cleft are so closely approximated that no hiatus 

 is visible as in many other species ; seen from the side, this segment 

 terminates in an obtuse, scarcely deflexed tip. The legs are devoid 

 of all traces of the foliaceous lobes so conspicuous in the female, but 

 present the same general structure ; the intermediate femora are just 

 perceptibly curved ; and the four posterior tibiae have a few incon- 

 spicuous spinules towards the apical end. 



Total length 4 in. 7g lin., ant. 15^, head 2, proth. If, mesoth. 12, 

 metath. 11, abd. 24+6=30 lin., ant. legs 19 + 22+ 6| =4 in., inter, 

 legs 12 + 12+5=2 in. 5 lin., post, legs 15 + 16+ 4|^=3 in. 



Hah. Samagooting, Naga Hills, with the female. Collected by 

 Captain Butler. — Proceedings of the Asiatic Society of Bengal, July 

 1873. 



* Op. cit. pp. 120 & 121. 



