phasmim:. bacteria. 



23 



Phasma cornutum, G. R. Gray, Syn. Phasm. p. 17 (Bac- 

 teria filiformis). 



Lichtenstein in Linn. Trans. vi. p. 9. pi. l.f.l (Phasma 



filiformis). 

 Brown, Jamaica, 433. pi. 42. f. 5. 

 Bacteria ferula, mas, Burnt. Handb. d. Ent. ii. 2. 564. 

 Hab. In Indiae occidentalis insulis. 



This is another insect of which the insufficiency of the 

 early descriptions renders identification nearly impossible. 

 Fabricius, who first described the species, saw it in Dr. 

 Hunter's Museum at Glasgow, and gives " In America me- 

 ridionali " as its habitat. He, however, refers to Herbst's 

 Archives, t. 51. f. 2. That figure, however, represents a 

 species of Bacillus, as above referred to under No. 17. 

 An examination of the Hunterian specimen, if still in exist- 

 ence, will alone clear up the question as to the true Fabri- 

 cian species. Lichtenstein, taking up the species, gives 

 South America and the opposite islands as its locality. 

 His figure represents a very slender male insect, rather 

 more thau 4 inches long, with the body neither spined nor 

 tubercled ; the two terminal segments of the body much 

 swollen, with two short anal styles at the extremity ; the 

 legs long and slender, annulated with black. "The Ph. 

 filiforme in the Ohrtmannian Collection," he observes, "is 

 without doubt a male, full-grown, and yet without any 

 wings. Time will show whether or not the Ph. filiforme 

 be the male of Ph. Ramulus " — evidently meaning Ph. fe- 

 rula (arumatia), of which he states, " Habitat cum preece- 

 dente" (Ph. filiformis). 



Dr. Burmeister accordingly regards Ph. filiformis as the 

 male of B. ferula (arumatia) ; he however describes it as 

 having the first joint of the tarsi as " distinctius cristato," 

 whereas Lichtenstein expressly alludes to its similarity to 

 the following joints. Burmeister adds — " abdominis seg- 

 mento penultimo utrinque processu acuto dependente 

 nullo." 



7. (59.) Bacteria nraricata. 



Mas. Lsevis; tarsorum articulo lmo supra carinato ; re- 

 latio mesothoracis ad metathoracem =4:3; abdominis 

 segmento penultimo utrinque processu acuto dependente. 



Fcem. Subscabra ; thorace densius spinoso, spinis cras- 

 sioribus obtusis, articulo tarsorum 1 mo cristato ; relatio 

 mesothoracis ad metathoracem =3 : 2 ; abdomine in utro- 

 que sexu segmento 4to integro ; thorace maris lasvi, foe- 

 mina) muricato. 



Long. corp. maris 3" 10V" ; foem. 5" 8'". 

 Bacteria muricata, Burmeister, Handb. d. Ent. ii. p. 564. 



Hab. In Brasilia, Para. 



A male insect in the National Collection, sent from Tapa- 

 jos, Brazil, by Mr. Bates, agrees tolerably well with Lich- 

 tenstein's figure of B. filiformis. It measures rather more 

 than 4 inches in its total length ; the antennce, lin. 27 ; the 

 prothorax, lin. \\; the mesothorax, lin. 13; the metathorax, 

 lin. 9 ; and the abdomen, lin. 19 + lin. 4=lin. 23. Its colour 

 is rufous brown varied with green, the latter colour most 

 prominent on the thoracic segments ; it is very slender and 

 cylindric ; the body and legs entirely destitute of spines or 

 tubercles ; the seventh and eighth dorsal segments of the 

 abdomen are dilated, each of the hinder lateral angles of 

 the eighth being elongated into a deflcxed spine ; the ninth 

 segment is small, widened behind and subemarginate, ex- 

 posing the anal styles at the sides ; the three terminal ven- 

 tral segments are short, with a strong deflexed spine in 

 the middle. The legs are very long, slender and simple, 

 the four hind ones of a dark colour with pale bands. The 

 basal joint of the tarsi is not cristated. This character 

 seems to agree with the male of B. muricata of Illiger, 

 which is from Para in Brazil. A larger male specimen 

 (5i inches long), sent from Villa Nova by Mr. Bates, agrees 

 with the preceding. 



8. (60.) Bacteria simplex. 



Aptera, elongata, obscure testacea; antennis mediocri- 

 bus ; thorace cylindrico, scabro, postice attenuato ; capite 

 inermi, oculis prominulis ; pedibus anticis elongatis ; pedum 

 tarsi articulo lmo triangulari erecto. 



Long. corp. 5" 3'" ; anten. 2" 4'". 



Phasma simplex, Stoll. Spectr. Index. 



G.R. Gray, Syn. Phasm. p. 17 (Bacteria simplex). 

 Burmeister, Handb. d. Ent. ii. 2. 565 (B. simplex, 

 fern.). 

 Le Squelette Chinois, Stoll. Spectr. t. 14. f. 55. 

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

 Oliv. Encycl. Meth. vii. 639 (Mantis Sceleton). 

 Hab. In China [? ?]. Mus. Holthuys. B.M. ? 



9. (61.) Bacteria hastata. 



Femoribus muticis, corpore punctis albis elevatis piliferis ; 

 maris cercis analibus brevibus, compressis, hirtis ; fceminae 

 cercis analibus mucronatis, hirtis ; operculo vaginali longis- 

 simo, acuto, canaliculato. 



Long. corp. maris 3" ; feeminae cum operc. vag. 4" 9'". 

 Bacteria hastata, Burmeister, Handb. d. Ent. ii. p. 567. 



Hab. In Brasilia. 



10. (62.) Bacteria bicornis. 



Aptera, lsevis, glabra, cylindrica, dilute fusca ; pedibus 

 elongatis, obscuro fasciatis ; femoribus angulatis, interme- 



