CATALOGUE OF ORTHOPTEROUS INSECTS. 



species are greatly developed, forming two long flattened 

 appendages. As the development of these three terminal 

 segments is therefore more various in the species than that 

 of the sis liasal ones, I have thought it would be advan- 

 tageous to give a separate measurement of the two portions 

 of the abdomen. In the notice therefore of the length of 

 the insect, that of the six basal segments is first given, and 

 then that of the three terminal ones, vsdth the total length, 

 thus: abdom. lin. G + lin. 3 = Un. 9. 



The presence or absence of ocelli has been used as a 

 sectional character in the familj', but, as it appears to me, 

 too great an importance has been allowed to it ; instances 

 will, in fact, be mentioned in the course of this work, in 

 which not only closely allied species differ in the possession 

 of ocelli, but also the opposite sexes of the same species ; 

 and in one instance even specimens of the same sex equally 

 disagree in this respect. 



Another character has also recently been employed as of 

 generic importance — namely, the simple or furcate condition 

 of the second or main vein in the costal area of the wings. 

 I have, however, met with specimens in which the veins in 

 this portion of the wings were so arranged that it was not 

 possible to affirm whether the vein in question were furcate 

 or not ; whilst other instances have occurred in which the 

 vein was simple in one sex and furcate iu the other. 



The admeasurements are made on the English scale of 

 12 lines to the inch; in cases where the measures are de- 

 rived from other writers, they are given in the scales which 

 they have employed. 



Another character hitherto unemployed in the determi- 

 nation of the species of this family, has afforded me occa- 

 sionally good distinctive peculiarities — namely, the relative 

 size of the two divisions of which the upper surface of the 

 metathorax is composed. This, of course, is modified by 

 the size of the wings ; but still it is too useful to be neg- 

 lected. 



Most of the recent writers upon this family have followed 

 the primary divisions founded upon the presence or absence 

 of wings, first suggested by Lichtenstein. Latreille, how- 

 ever, followed by Serville, adopted the presence or absence of 

 membranous dilatations on the legs as a primary character ; 

 the former author using the alary character in a secondary 

 sense ; the latter, however, entirely ignores it as a means 

 of tabulation, using the comparative lengths of the pro- and 

 mesothorax as a means for separating the great mass of the 

 species into two primary groups. Considering, as I do, 

 the wings of Insects as their most essentially characteristic 

 organs, as compared with all other Annulose animals, I 

 shall not hesitate to follow the arrangements of Gray, Bur- 

 meister and De Haan iu this respect. 



Division 1. APTEROPHASMINA. 



G. R. Gray, Syn. Phasm. p. 12. 



Tegmina and wings wanting in both sexes when the 

 insects are arrived at their full growth. 



Genus 1. BACILLUS. 



Bacillus, Latreille, Servi/le, De Haan. 

 Bacillus, p., Bunnehter. 

 Bacillus et Linocerus, G. R. Gray. 



Body filiform ; thorax long ; the metathorax considerably 

 elongated, glabrous. Legs long or of moderate length, simple 

 or armed vrith small spines. Antennae very short, or at least 

 not so long as the thorax, with few (scarcely ever more 

 than twenty) joints, the basal jouit often broad and flat. 

 Tarsi of the fore legs with the basal joint elongated. 



I . Bacillus Rossii. 



Filiformis ; viridis vel cinereo-fuscus ; subobsolete gra- 

 nulatus, carinula dorsali ; pedibus filiformibus angulato- 

 striatis ; femoribus 4 posticis subtus tridentatis ; antennis 

 1 3-23-articulatis. 



Long. Corp. unc. 3i. 



Bacillus Rossii, Lep. ^ Serv. Enc. Me'th. x. 101. 



Serv. Ann. Sc. Nat. xxii. 65; H. N. Orth. p. 256. 1. 



Brum, U. N.i\. 111. pi. 9. f. 2. fem. 



Burmeister, Uam/b. ii. 561. 1. 



L. H. Fischer, Orth. Eur. p. 140. pi. 8. f. 9, 10. 



Cuv. Reg. A/iim. (ed. Crochard) Ins. pi. 79. f. 2. 

 Phasma Rossia, Fahr. Eiit. Syst. Siippl. p. 187. 4. 



Lafr. II. N. xii. 104 ; Gen. Cr. 3. 88. 

 Ph. Rossium, Charpentier, Ilorce Ent. p. 93. 

 Mantis Rossia, Fahr. Ent. Syst. ii. 13. 4. 



Rossi, Faun. Etr. i. 259. 636. pi. 8. f. l.fem. ; Man- 

 tissa, i. 102 (cd. ///. 322). 

 Mantis filiformis, Petayna, Instit. Ent. i. 307 {non M. fili- 

 formis, Fahr.) . 



Cyrillo, Spec. Ent. Neap. pi. 5. f. 1. fem., t. 7. f. 1. ui. 

 Mantis plocaria, Lichtenstein, Linn. Trans, vi. 11. 

 Plocaria domestica, Scopuli, Belie. Insubr. i. 60. t. 24. f. A. 

 Spectrum Rossii, Lamh-. An. s. Vert. iv. 255. 

 Bacillus Rossia, G. R. Gray, Syn. Phasm. p. 20. 



Hah. In Europa meridionali ; Andalusia; Italia; Dal- 

 m.atia ; Grtecia ; Africa boreali. B.M. 



This species appears to be variable in some of its cha- 

 racters. Fabricius describes it "femoribus subtus den- 

 tatis;" Latreille, "femoribus ante apicem infra uniden- 

 tatis." Brulle figures all the femora as armed with from 

 three to five spines. Charpentier says the fore legs are 

 quite simple, and only the four hind ones spined. In a 

 specimen iu the British Museum from Marseilles, having 

 the thorax granulated and the antennae 13-jointed, the 

 fore femora are quite simple, the four hind ones have four 



B 2 



