PHASMIDJE. BACTERIA. 



25 



mesoth. lin. 15 ; metath. lin. 10 j abdominis segm. 6 basalia 

 lin. 25 (apice mutilato). 



Hab. In India occidentali (Forsttom). B.M. 



The unique specimen of this insect in the National Col- 

 lection is much mutilated, wanting the antennse, fore legs, 

 and extremity of the abdomen. I suppose, however, that 

 it is a male insect. The head is rather small and unarmed ; 

 the mesothorax very long, and (as well as the metathorax) 

 dilated at the insertion of the legs ; these segments are also 

 unarmed. The abdominal segments are simple and slender ; 

 the six basal segments bear a small tubercle on each side 

 close to the base ; they are not furnished with any dorsal 

 appendage. The four hind legs are moderately long ; the 

 femora rather incrassated, and armed near the tips beneath 

 with a strong and acute spine, succeeded by a smaller one ; 

 the tibiae and tarsi are slender and simple. 



14. (66.) Bacteria Haita, Westw. 

 Plate XXV. fig. 5, male ; fig. 6, female. 



Luteo-viridis, vitta laterali pallidiori ; capite postice elon- 

 gato, supra inermi, vitta media obscuriori ; mesothorace 

 valde elongato ; abdomine maris cylindrico, segmento ultimo 

 apice truncato, stylis caudalibus deflexis, subconicis, apice 

 intus curvatis ; abdomine foeminae subconvexo, e medio ad 

 apicem sensim attenuato, stylis caudalibus elongatis, por- 

 rectis ; pedibus gracilibus, femoribus omnibus apicem versus 

 subdenticulatis (mas et foem.) . 



Mas. Long. corp. unc. 3 ; cap. lin. 2 ; proth. lin. \\ ; 

 mesoth. lin. 9 ; metath. lin. 6 ; abdom. lin. 14 + lin. 2£ = 

 En. 16$. 



Foem. Long. corp. unc. 4£ ; cap. lin. 2\ ; proth. lin. 2 ; 

 mesoth. lin. 13 ; metath. lin. 8 ; abdom. lin. 22 + lin. 5 + 

 operc. lin. 2£=lin. 29\. 



Hab. In Insula St. Domingo. Mus. Saunders. B.M. 



The male is very slender and cylindrical, the thoracic 

 segments being slightly dilated at the insertion of the legs. 

 The body is quite smooth, scarcely polished, and destitute 

 of spines. The general colour is pale luteous with a darker 

 line down the middle of the back, and a slender pale green 

 line down each side of the body. The head is elongated 

 posteriorly, the hind margin slightly elevated, the middle 

 of the raised edge being depressed ; on each side behind the 

 eye is a dusky line. The mesothorax is very long, the 

 metathorax about half the length of the pro- and meso- 

 thorax. The abdomen is slender ; the segments very slightly 

 dilated at the base, the three terminal segments short, the 

 last truncate and slightly margined behind ; the anal styles 

 deflexed, subcorneal, and curved inwards at the tip. The 



legs are long and slender, the femora slightly toothed be- 

 neath near the tip. 



The female is larger, more robust, and of a dirty luteous 

 brown colour, with shorter legs ; the surface of the body is 

 smooth ; the head and thoracic segments finely mottled 

 with minute luteous dots ; on the crown of the head behind 

 is a large, reversed, triangular pale spot, more or less distinct, 

 enclosing a spear-shaped dark one. The thoracic segments 

 are quite simple ; the mesothorax is greatly elongated ; the 

 hinder division of the metathorax occupies only two-sevenths 

 of its entire length. The abdomen is subdepressed, gra- 

 dually attenuated from the third segment to the extremity, 

 where it is terminated by a small, elongate, semi-ovate, 

 constricted lobe, along which runs a fine central carina ; 

 the anal styles are elongated and straightly porrected back- 

 wards, being as long as the preceding segment, which is 

 twice the length of the penultimate one ; the operculum is 

 slender and acute at the tip, which scarcely extends beyond 

 the middle of the last segment. The legs are rather short, 

 and all the femora slightly toothed near the tip on the under 

 side ; the femora and tibiae are more or less distinctly varied 

 with paler spots. 



In the want of an opportunity of examining the original 

 insect from Antigua, described and figured by Drury under 

 the name of Mantis linearis (Exot. Ent. i. pi. 50), and 

 which was evidently a male insect, closely allied to the male 

 above described, it is impossible to determine whether the 

 latter be really distinct from Drury's insect. (See ante, 

 p. 24.) 



Plate XXV. Fig. 5. The male, of the natural size. 5 b. The 

 terminal segments of the body seen sideways. 



Fig. 6. The female, of the natural size. 6 a. The terminal seg- 

 ments of the abdomen seen sideways. 6 b. The extremity 

 of the last segment seen from above, with the base of the 

 anal styles. 



15. (67.) Bacteria Mexicana. 



Filiformis, olivacea ; capite albido, pedibus lineis elevatis 

 striatis ; thorace abdomini longitudine sequali*; pedibus 

 mediocribus, simplicibus (mas). 



Long. corp. 3" 5'" ; anten. 1" 11'". 

 Heteronemia mexicana, G. R. Gray, Syn. Phasm. p. 19. 



Hab. In Mexico. B.M. 



Obs. The description, " pedes posteriores reliquis bre- 

 viores," given by Mr. G. R. Gray, upon which indeed his 

 genus Heteronemia was established, results from the left 



* Mr. G. R. Gray says, " thorace abdomine longiori," which would 

 be a very unusual character ; these two parts of the body are, how- 

 ever, exactly equal in length. 



