Sciidcler.] 216 



just past the middle, the Inner edge furnished with a row of hairs di- 

 rected outwards somewhat, which continue on to the outer posterior 

 angle ; the Inner posterior angle Is produced Into the apical process, 

 which is about one-half as long as the main stem, continuous with the 

 lower surface, laminate, a little more than half as broad as the main 

 stem, directed Inwards and backwards equally, the apical half recurved 

 upwards, the apex pointed ; the Inferior appendage is triangular, 

 reaching more than half way to the extreme apex of the superior ap- 

 pendages, Its apex minutely uncinate above ; appendages of ? cylin- 

 drical, straight, constricted at the base, the apex bluntly pointed, 

 vulvar lamina bifid ; two discoidal nervules, (sometimes three, at the 

 triangle), then three. 7-9 antecubitals ; 7-10 postcubitals. 



Length 1.86 ; alar expanse 2.92-3.08. S appendages (exclusive of 

 apical process) .11 in. ? .loin. PterostIgma.il. 39 5,8 ? Her- 

 mit Lake, August. Eggs lemon-yellow, ovoid, subacute at either end, 

 not smooth, .02 In. long, uniform In size. It is allied to Cord, septen- 

 trionalis Hagen. 



Cordulia forcipata nov. sp. 



Vertex, most of front, occiput and labrum dark brassy-green, as In 

 life, the occiput and labrum less brassy ; epistoma and sides and lower 

 edge of front, dark yellowish-brown (in life luteous) ; rhinarium dark 

 luteous (in life luteous); labium luteous as in life ; upper half of eyes, 

 In life, grass-green, lower half indistinct purplish ; back of head black, 

 back of occiput with an indistinct reddish spot ; thorax covered with 

 long greyish pile, brassy-green, as In life, the dorsum In front black, 

 anteriorly with an Indistinct fulvous spot as in life, the pleura with a 

 mesothoracic and metathoracic central indistinct Ill-defined bar, fulvo- 

 luteous as In life ; wings hyaline, extreme base of posterior pair, 

 including but little more than the triangle bordering the membranule 

 subfumose ; pterostigma fusco-ferruginous ; basal half of membranule, 

 white, apical blackish-brown ; legs black, anterior femora, except apex, 

 with a confluent posterior and superior fulvo-ferruginous vltta ; abdo- 

 men obscure deep brassy-green, segments 5-10 mixed with brownish 

 (as in life), the whole of the sides of segments 1 and 2, on the latter 

 extending on to the genital lobes, and the base of segment 3, marked 

 with indistinct fulvo-luteous (as in lil'e) ; sides of segments 5-8, on 8 

 Indistinctly, with a round basal spot fulvous ; appendages black, infe- 

 rior ones testaceous above, superior pair carinate Inferlorly and on the 

 basal half exteriorly, sub-cylindrical ; when viewed from above the 

 basal half is straight, swollen, constricted just beyond the base, espe- 

 cially on the Interior edge, the apical half bent slightly outwards, tlien 

 inwards, the Inner edge rounded off to the pointed apex ; when viewed 

 laterally they are seen to be curved dowuAvards considerably, the apex 



