1873.] J. Wood-Mason — Species of FTiasmidce. 63 



the abdomen. Head not so stout as in the precedmg species, armed between 

 the eyes with two minute conical spinules or tubercles, its posterior margin 

 presents 3 notches giving it the appearance of being bi-tuberculate, 

 narrowed from the eyes to the base. Antenna3 very slender, as long as the 

 three terminal abdominal segments taken together, 30-jointed ; first joint some- 

 what expanded ; second minute, hardly longer than broad, followed by 28 

 filiform joints gradually increasing in length to the apical one. Mesothorax 

 uniform in width except at the insertion of the legs where it is expanded. 

 Metathorax broader than the mesothorax and expanded at each end. 



Abdomen very long, attenuated from the base of the 5th segment ; the 

 thi'ee segments anterior to this are uniform in width and broadest of all, 

 broader even than the basal segment which is just perceptibly concave at 

 the sides ; the 6th ventral has a rounded punctate callosity posteriorly ; 

 the ante-penultimate segment is as long as the two last taken together ; the 

 last is grooved above in the middle line, has its posterior angles pointed and 

 rather deflexed than projecting outwards and its hinder margin sub- 

 angularly emarginate, the emargination being filled by an azygos plate 

 which is carinate, has its free margin straight and projecting beyond the 

 acutely angular tips of the segment, audits postero -lateral angles rounded. 

 Ce7'ci tolerably salient, obtuse. Operculum subcompressed and carinate for 

 nearly its posterior half, rounded but not compressed at the tip which barely 

 reaches as far as the bottom of the emargination in the last segment. 



Legs slender ; anterior pair triquetrous ; the two other pairs subtrique- 

 trous, their upper crests being not nearly so closely approximated as in the 

 preceding species. The intermediate legs, stretched straight backwards so 

 as to be parallel with the long axis of the body, reach to the middle of the 4th, 

 the posterior ones to that of the 7th segment. The anterior femora are 

 denticulate to beyond the middle of their upper and lower crests ; the four 

 posterior pairs are devoid of spines or foliaceous lobes except at their apical 

 ends below where there is a short denticulate elevation, all the tibia3 have a 

 lamellar carina arising and attaining its greatest development near the proxi- 

 mal end ; and the distal halves of the four posterior ones are acutely spinulose 

 on all edges. The first joint of the tarsus of the fore-legs is fully as long as, 

 of the intermediate legs shorter than, of the posterior legs almost as long 

 as, the remaining joints together ; but the first tarsal joint of 1st legs is 

 longer and slenderer than those of the 2nd and 3rd pairs. 



Colour green with the prosternum, bases of all the legs, the stigmata, 

 the spines on the head and the interval between them, and the apex of the 

 abdomen blackish-brown. 



Total length, 6 in. lOf lines ; antennae, 9 lin. ; head, 3|^ ; proth. 2^ ; 

 mesoth. 15i ; metath. 13^ ; abdomen 3 in. 3 lin. + 9 lin. = 4 in. ; ant. legs : 

 femur 23 lin. + tibia 22 + tarsus 6f = 4 in. 3f lin. ; inter, legs : f. 17f + tib. 



