164 



CATALOGUE OF ORTIIOPTEROUS INSECTS. 



proth. lin. 1|; mesoth. lin. 3 ; metath. lin. 4 ; abdom. lin. 10 

 + lin. 3 = lin. 13 ; tegm. lin. 9 ; alar, expans. unc. 2§. 



Hub. Magdalena (D. Goudot). In Mus. W. W. Saunders 

 et Hopeiano Oxonise. 



This pretty species is long and rather slender (especially 

 the male), and is well distinguished by its peculiar colours 

 and comparatively short mesothorax. The head is large, 

 rounded, and very convex behind, with two small im- 

 pressed lines between the eyes in front, and with traces of 

 longitudinal pale lines in the hinder part ; ocelli wanting. 

 The antennae are long and slender. The prothorax is 

 square, with the anterior and lateral margins elevated. The 

 mesothorax is short, being about one and a half times the 

 length of the prothorax ; its disc is granulose, the granules 

 pale, a central line and the lateral margins slightly elevated. 

 The tegmina are elongate-ovate, rather more than half the 

 length of the wings, with a small raised tubercle near the 

 base ; they are pale green. The wings are large, opake 

 white, with luteous longitudinal veins and a broad black 

 apical margin ; the costal area is pale along its basal half, 

 the remainder being greenish brown ; the chief vein is fur- 

 cate near the base in both sexes. The abdomen is long 

 and dark brown, slender in the male, with the tip recurved ; 

 the three terminal joints rather dilated at the sides above 

 and carinated along the middle ; the terminal ventral seg- 

 ments are dilated, gaping at the extremity, exposing a pair 

 of horny hooks and the short anal styles ; the three ter- 

 minal segments of the female are short and narrow, with 

 the anal styles exserted ; the operculum short, exposing 

 at its extremity a flattened internal plate, which reaches 

 to the tip of the abdomen. The legs are short and robust, 

 especially the hinder femora ; the anterior femora are but 

 slightly twisted at the base ; the hind femora are dusky at 

 the tips, and these, as well as the hind tibiae, are finely ser- 

 rated beneath ; the tarsi have the basal joint rather longer 

 than the three following joints united. 



Plate XV. Fig. 3. The female, of the natural size. 3 a.* 

 The terminal segments of the abdomen of the female seen 

 sideways. 3 b. The same seen from beneath. 3 c. The 

 terminal segments of the abdomen of the male seen from 

 beneath. 3 d. The same seen sideways. 3 e. The same 

 seen from above. 



5. (433.) Dinelytron ? Agrion, Westw. 



Plate XXI. fig. 0, male. 



Gracile, abdomine cylindrico, simplici ; opacum, granu- 



latum, pallide fusco-griseum ; capite bispinoso ; mesotho- 



race brevi ; tegminibus oblongo-ovalibus, fuscis, extus viri- 



* In fig. 3 a and fig. 3 c, the J and ? are accidentally reversed. 



dibus ; alis albis, opacis, extus paulo obscurioribus, venis 

 fuscis, area costali fuscescenti, ad basin punicea ; pedibus 

 perbrevibus, tibiis gracilibus vix lobatis (mas). 



Long. corp. lin. 20 ; cap. lin. 1^ ; anten. lin. 10 ; proth. 

 lin. 1£ ; mesoth. lin. 2; metath. lin. 2; abdom. lin. 10 + 

 lin. 3=lin. 13; tegm. lin. 4; alar, expans. lin. 20. 



Flab. In Brasilia apud Villain Novam (D. Bates). B.M. 



I am only acquainted with the male of this curious and 

 very slender species, which ill agrees with the preceding in- 

 sects, and seems to approach the Prisopi. Its general co- 

 lour is pale greyish brown, opake, with the head, pro- and 

 mesothorax, and hinder part of the abdomen granulated. 

 The head is short and rounded in front, convex, with two 

 rows of short obtuse points on the hinder part of the crown, 

 four in each row, the outer pair in the anterior row being 

 the largest. The antennas are rather short, 23-joiuted, the 

 third and three or four following joints very short, the re- 

 mainder gradually lengthened. The pro- and mesothorax 

 are of equal width, the latter about twice the length of the 

 former; the metathorax shorter than the latter, its two divi- 

 sions of equal length. The tegmina are oval, obscure light 

 brown; the outer half of the anterior margin pale green ; the 

 median carina considerably arched towards the base. The 

 wings are opake, brownish white, with a dark shade along 

 the outer margin, the veins strongly marked and dark 

 brown ; the costal area pale brown, bright pink for about 

 one-third of the length from the base ; the chief vein is 

 simple. The abdomen is long, cylindrical, simple, and 

 narrower than the thorax, smooth at the base, slightly ru- 

 gose beyond the middle ; the three terminal joints dilated, 

 the last truncate at the tips, with the sides oblique and 

 emarginate, and the anal styles slightly produced ; the ter- 

 minal ventral segments are considerably swollen (the extre- 

 mity is injured). The legs are short ; the anterior femora 

 curved, rather wide, and slightly waved along the hinder 

 edge ; the anterior tibise short, gradually narrowed to the 

 tip, with a small hind lobe at the base ; the four hind fe- 

 mora are short, thick, with three strong teeth on the under 

 edges, slightly angulated near the extremity of the upper 

 edge ; the tibiae rather slender and slightly bilobed ; tarsi 

 short, with the basal joint not longer than the second and 

 third united. The metasternum is considerably dilated at 

 the sides, with two deep punctures in the middle. 



Plate XXI. Fig. 6. The male, of the natural size. 6 a. The 

 terminal segments of the abdomen seen sideways. 



6. (434.) Dinelytron Merisinus, Westw. 

 Plate XIII. fig. 5, male. 

 Obscure luteo-fuscum, glauco tinctum ; tegminibus ob- 



