24 



CATALOGUE OF ORTHOPTEROUS INSECTS. 



diis subtus apice muticis ; tibiis omnibus muticis ; capite 

 oblongiusculo, bicornuto, comubus auriformibus ; maris 

 tarsorum articulo basali simplici, fceminae plus minusve 

 supra cristate 



Long. corp. maris 3" 6'" ; anten. 2" ;>'". 



Long. corp. tern. unc. 6f ; anten. unc. 3} ; proth. lin. 3 ; 

 mesoth. lin. 17 ; metath. Iin.'l2i; abdom. lin. 39+lin.5i 

 + operc. lin. 2=Iin. 46|. 



Phasma bicomis, Stoll, Spectr. Index. 



G. R. Gray, Syn. Phasm. p. 16 (Bacteria bicomis). 

 Burmeister, Handb. d. Ent. ii. 2. 566. 

 Le Spectre ou Squelette cornu, Stoll. Spectr. t. 15. f. 57 



& 57 if. 

 Phasma cornutum, Lichtenstein in Linn. Trans, vi. p. 10. 

 Guilding, Linn. Trans, xiv. 137. pi. 6 (c? haud Ph. 

 filiformis, Fabr.). 

 Mantis Keratosqueleton, Oliv. Enc. Mith. vii. p. 639. 

 Hab. In America australi et India occidentali. B.M. 



Obs. The four hind femora in the female have an an- 

 gulated dilatation near the base on the hinder edge, and 

 the operculum extends beyond the extremity of the body. 

 The male is excellently figured by the Rev. L. Guilding, 

 as above referred to, and Stoll's fig. 57 is a good repre- 

 sentation of the female. 



1 1 . (63.) Bacteria Cyphus, Westw. Plate VII. fig. 7. 



Elongata, gracilis, cylindrica, lsevis, pallide rufo-fusca ; 

 capite et prothorace utrinque vitta laterali obscura, capite 

 spinis duabus latis inter oculos ; metathorace ante medium 

 utrinque tuberculo laterali; segmento ultimo dorsali ab- 

 dominali postice latiori et subemarginato, angulis posticis 

 rotundatis ; segmento ultimo ventrali tuberculo acuto cur- 

 vato instructo (mas). 



Long. corp. unc. 3| ; anten. unc. 2 ; proth. lin. 2 ; me- 

 soth. lin. 10 ; metath. lin. 7; abdom. lin. 19 + lin. 4 = 

 lin. 23. 



Hab. ? B.M. 



I am only acquainted with a single male of this species, 

 which appears to be closely allied to B. bicomis. It is 

 long, slender, cylindrical, smooth, except a very few minute 

 tubercles on the front of the mesothorax, pale rufous brown, 

 the head and prothorax with a dusky line on each side 

 behind the eyes. Head widest in front, with two erect, 

 broad, irregularly notched horns between the eyes. An- 

 tenna; long and slender (reaching to the extremity of the 

 fore tibia;) ; mesothorax long and slender, with a few tuber- 

 cles in front ; metathorax with a small prominent tubercle on 

 each side at about one-third of the distance from the base. 

 Abdomen moderately long, the seventh and eighth segments 



short, widened behind ; the terminal segment still broader, 

 especially behind ; the outer apical angles rounded ; the 

 posterior margin slightly emarginate ; the under surface 

 furnished along the extremity with numerous small teeth ; 

 the anal styles rather long and thickened, but not visible 

 from above. The three terminal ventral segments short, 

 scarcely extending beyond the base of the ninth dorsal 

 segment, the ninth swollen at its base beneath into a curved 

 horny tubercle ; beyond this, extending beneath the ninth 

 dorsal segment, is a strong, detached, curved, horny point. 

 The legs are moderately long, especially the anterior pair ; 

 the middle and hind femora are rather thickened ; the whole 

 are destitute of spines. 



Plate VII. Fig. /. The male, of the natural size. 7 a. The 

 head seen sideways. 7 b. The terminal segments of the body 

 seen sideways. 7 c. The same seen from beneath. 



12. (64.) Bacteria linearis. 



Obscure fusca (insecto viventi viridi) ; antennis seta- 

 ceis, longitudine corporis ; pedibus gracillimis, Inermibus 

 (mas) . 



Long. corp. fere unc. 2£. 



Mantis linearis, Drury, Exot. Ent. i. pi. 50. 



Bacteria linearis, G. B. Gray, Syn. Phasm. p. 1 7 (nee Ph. 



linearis, Fabr.). 



Burmeister, Handb. d. Ent. ii. 2. 567. 



Hab. In India occidentali, Antigua. B.M. 



Obs. Burmeister gives the additional character, " cercis 

 analibus brevibus mucronatis obtusis." 



There is a specimen in the Banksian Collection thus 

 named, which may, without much doubt, be regarded as 

 typical. Its proportions are— Body, unc. 2£ ; head, lin. 1£ ; 

 proth. lin. 1£ ; mesoth. lin. 8 ; metath. lin. 4 ; abdom. 

 lin. 13. The two anal styles are obliquely deflexed, and 

 the terminal ventral segment scarcely extends beyond the 

 base of the ninth dorsal segment. 



Two immature male specimens from the collection of 

 Forstromm, marked as natives of St. Bartholomew's Island, 

 are contained in the British Museum Collection, and may 

 possibly be referred to this species. 



13. (65.) Bacteria cradelis, Westw. 



Elongata, cylindrica, lsevis ; capite et corpore inermibus ; 

 segmentis basalibus abdominis utrinque prope basin tuber- 

 culo minuto armatis; pedibus 4 posticis elongatis, fe- 

 moribus crassioribus, spina forti acuta alteraque minori 

 prope apicem subtus armatis (mas?). 



Long. corp. circ. unc. 5 ; cap. lin. \\ ; proth. lin. 2 ; 



