PHASMIDiE. BACTERIA. 



29 



margin emarginate ; the three ventral segments are dilated, 

 especially at the extremity of the eighth segment. 



The female is much more robust and cylindrical. It is 

 opake dull brown, with paler spots. The head with two 

 acute spines between the eyes ; the sides of the meso- and 

 metathorax serrated (the latter more widely). The abdo- 

 men is gradually but slightly narrowed, the three terminal 

 segments short (the three together being scarcely longer 

 than the sixth segment), and the ninth is trifid at the ex- 

 tremity. The middle legs are rather short, with a single 

 spine on the under side beyond the middle, and several 

 minute ones near the extremity ; the operculum is muti- 

 lated. 



Plate VIII. Fig. 4. The male, of the natural size. 4 a. The 

 terminal segments of the abdomen seen sideways. 



Fig. 9. The female, of the natural size. 9 a. The terminal seg- 

 ments of the abdomen seen sideways. 



29. (81.) Bacteria Molorcha, Westw. 

 Plate XXIV. fig. 4. 



Valde elongata, cylindrica, fere parallela, opaca, irregu- 

 lariter granulosa, viridi-fusca ; mesonoto tuberculis non- 

 nullis majoribus nigris ; abdominis segmento oto utrinque 

 lobato ; pedibus brevibus, inermibus ; operculo vix ultra 

 segmentum 7m extenso (fcem. vix matura). 



Long. corp. unc. 2£ ; capit. lin. 2\ ; proth. lin. 2 ; me- 

 soth. lin. 6 ; metath. lin. 41; abdom. lin. 15 + lin. 3A= 

 lin. 18i. 



Hab. In Columbia (M. Goudot). Mus. Saunders. 



This species is at once distinguished by its uniform 

 width, and by the dilatation of the sides of the fifth seg- 

 ment of the abdomen. The head is short and square, 

 with a number of minute raised granules chiefly arranged 

 in lines. The antennae are longer than the head and whole 

 of the thorax, and finely setose ; the basal joint is short 

 and rather broad, the alternate joints brown at the tips. 

 The remainder of the body is also rugose and slightly gra- 

 nulose, the granules of the mesonotum larger and black. 

 The metathorax is rather more than two-thirds of the length 

 of the mesothorax. The abdomen is considerably longer 

 than the front part of the body ; it has the fifth segment 

 considerably dilated on each side beyond the middle ; the 

 seventh segment is nearly equal in length to the preceding, 

 the eighth and ninth are short, and, as well as the seventh, 

 carinated above. The operculum is narrow, not swollen, 

 and scarcely extends beyond the seventh segment ; behind 

 it are two flattened, narrowed pieces, and the two anal styles 

 are very small and terminal. The legs are short and simple ; 

 the fore femora broad, and flattened along the upper edge. 



The basal joint of the tarsi is about equal in length to the 

 three following joints. 



Plate XXIV. Fig. 4. The female (probably immature), of the 

 natural size. 4a. The terminal segments of the abdomen 

 seen sideways. 



30. (82.) Bacteria Molita, Westw. 

 Plate XXVI. fig. 3. 



Gracillima, lsevis, inermis, olivaceo-fusca, opaca ; abdo- 

 mine cylindrico, segmento 7mo utrinque dilatato, 8vo ob- 

 conico, angustiori, 9no lateribus inflato-rotundatis ; stylis 

 analibus parvis, ovalibus, apice acutis ; pedibus longis, in- 

 ermibus (mas). 



Long. corp. unc. 2^; capit. lin. If ; proth. lin. 1^; mesoth. 

 lin. 71 ; metath. lin. 5; abdom. lin. 8i+lin. 3=lin. 11£. 



Hab. In Columbia (M. Goudot). Mus. Saunders. 



Very slender, smooth, opake, olivaceous brown, destitute 

 of spines. Head simple, moderately elongated behind the 

 eyes. Antennae very long and slender. Mesothorax very 

 long, slender, cylindrical, slightly dilated at the insertion 

 of the middle legs, as is also the hind part of the meta- 

 thorax, which is about two-thirds of the length of the 

 mesothorax. The abdomen is subcylindrical, with a slender 

 raised line on each side, more distinct on the hinder seg- 

 ments ; the seventh segment is gradually dilated on each 

 side, the eighth narrowed and obconic, and the ninth 

 swollen on each side into a very convex lobe, with a raised 

 line down the middle above ; hind margin slightly emar- 

 ginate, concave beneath, enclosing the short thick ovate 

 anal styles, which are pointed at the tips. Legs mode- 

 rately long, slender, and simple ; tarsi with the basal joint 

 half their length. 



Plate XXIV. Fig. 3. The male, of the natural size. 3 a. The 

 terminal segments seen laterally. 3 b. The terminal seg- 

 ments, with the anal styles, seen from behind. 



31. (83.) Bacteria Thestylis, Westw. 

 Plate XXIV. fig. 2. 



Gracillima, cylindrica ; capite brevi, rotundato, supra 

 bispinoso ; segmentis thoracicis apice dilatatis et spinosis ; 

 segmentis abdominalibus in medio sensim atteuuatis, ba- 

 salibus bispinosis, apicalibus inflatis ; stylis analibus crassis, 

 curvatis, obtusis et incurvatis (mas). 



Long. corp. lin. 24 ; capit. lin. 1 ; proth. lin. 1 ; mesoth. 

 lin. 7 ; metath. lin. 5£ ; abdom. lin. 7^ + lin. 3=lin. \0\. 



Hab. In Columbia (M. Goudot). Mus. Saunders. 



This is one of the most slender species with which I am 

 acquainted, having however seen but a single male indivi- 



