PHASMID.E. LONCHODES. 



45 



or less tuberculated. The head is armed with two spines 

 between the eyes ; the crown ulso bears several pairs of 

 smaller points ; the basal joint of the antennae is dilated. 

 The prothorax is armed with a pair of small approximating 

 spines in front and behind ; the mesothorax is granulose, 

 the points becoming larger next the mesial line, and with a 

 large tubercle in the middle of the hind margin, the lateral 

 part being dilated for the insertion of the middle legs ; the 

 metathorax is also granulose, with a larger tubercle in the 

 middle of the hind margin, as is also the case with the 

 abdominal segments, except one or two of the apical ones. 

 One of the two female specimens in the British Museum 

 is less rugose, and has the abdomen long and nearly cylin- 

 drical, the seventh segment being the narrowest ; the ninth 

 is short, transverse, with the apical angles deflexed, a mi- 

 nute central lobe, and two minute but rather broad styles 

 beneath (fig. 8<J and 8<?£). The other female has the 

 middle segments dilated, the ninth being suddenly de- 

 pressed at a short distance from its base, the apical portion 

 (which, although apparently soldered to the joint, appears 

 rather to be the representative of a tenth or supplemental 

 joint) forming a long lance-like piece, extending considerably 

 beyond the extremity of the operculum. The legs are long 

 and slender ; the femora armed near the tips beneath with 

 a minute spine. On the under side the female is furnished 

 with a few granules on each segment of the body placed 

 irregularly along the middle. The three terminal ventral 

 segments of the variety are evidently soldered into one 

 joint or operculum. 



The difference in the structure of the terminal segments 

 of the abdomen in the two specimens of this species in the 

 British Museum Collection, led me at first to suppose and 

 indicate in the lettering of the figures that the narrow one 

 was a male and the other the female. I feel, however, now 

 satisfied that both are females ; the terminal appendage in 

 the narrower specimen having been subjected to an arrest 

 of development, and the width of the broader specimen 

 being probably caused by its having been impregnated. I 

 have nowhere else met with so remarkable a variation in 

 the structure of these important organs in the individuals 

 of the same sex in any species. 



Pr,ATE III. Fig. 8 $ . The female insect, of the natural size. 

 8 a. The terminal segments of its body seen sideways. 

 8 S . The abdomen of the variety of the female seen from 

 above. 8 c? 6. The terminal segments seen sideways. 



22. (120.) Lonchodes Cyllabacus, Westw. 

 Plate VI. fig. 4. 

 Elongatus, subgracilis, undique irregulariter granulatus, 



obscurus, sordide fuscus, luteo paulo variegatus ; capite 

 inter oculos spinis duabus erectis ; abdominis segmentis 

 postice in medio subcarinatis, segmento 8vo supra angulato, 

 ultimo ad apicem subtrifido ; pedibus anticis irregulariter 

 tuberculatis, articulo basali tarsorum subconico ; femoribus 

 intermediis trilobato-spinosis (fcem.). 



Long. corp. unc. 2, lin. 1 1 ; cap. lin. 2\ ; proth. lin. 2 ; 

 mesoth. lin. 8 ; metath. lin. 5| ; abdom. lin. 13+ lin. 4 = 

 lin. 17. 



Hah. Ceylon. 



Nearly allied to Ph. (Acanthoderus) phyllopus, De Haan, 

 pi. 12. f. 5. 



Elongate, moderately slender, convex, obscure, irregularly 

 granulated both above and beneath, dirty brown ; the body 

 and legs variegated with dull luteous ; the femora clouded 

 with blackish. Head oblong, with two spines between the 

 eyes ; the disc granular, especially on the hind part ; the 

 meso- and metathorax are destitute of spines, but are gra- 

 nulated, especially at the sides, and are marked with a fine 

 central longitudinal line. The abdomen is granulose, espe- 

 cially at the hind part of the segments, in the middle of 

 which each is marked with a dark, slightly elevated space ; 

 the eighth dorsal segment is extended backwards and ele- 

 vated angularly ; the ninth segment being deflexed, with its 

 lateral posterior angles prominent, but obtuse, and exposing 

 the two minute anal styles ; it is rugose, with impressed 

 longitudinal lines. The operculum extends slightly beyond 

 the extremity of the ninth dorsal segment. The legs are 

 moderately long and slender ; the anterior have the femora 

 and tibiae irregularly and obtusely lobed, the lobes small, 

 the terminal lobe of the tibife being larger and angulated ; 

 the middle femora are thicker and armed with three large 

 acute lobes ; the hind femora simple ; the four posterior 

 tibiee have a small lobe near the base on the inner edge. 



Another specimen in the National Collection has the 

 lobes and spines of the legs less strongly developed. 



Plate VI. Fig. 4. The female, of the natural size. 4 a. The 

 head seen sideways. 4 b. The three terminal segments of 

 the abdomen seen sideways. 4 c. The extremity of the ab- 

 domen seen from above. 



23. (121.) Lonchodes Feniloides, Westw. 

 Plate VI. fig. 5. 

 Elongatus, subgracilis, fuscus, opacus, parte antica cum 

 pedibus pallidioribus ; capite magno, valde convexo, in- 

 ermi; pedibus longis, subgracilibus, valde serratis, rufo- 

 brunneo nebulosis ; femoribus 4 posticis apice subtus spina 

 majori armatis ; operculo elongato, apice subtruncato ; 



