= ee 
Species of Tenthredinide. 255 
Genus Lyna, Fabr. 
Lyda flagellicornis. 
L. melleo-flava; antennis prelongis, apice graduatim attenuatis ; alis 
pallide flavo-hyalinis, apice fusco late terminato. 
Female. Length 5 lines. Darkish honey-yellow, smooth 
and shining ; the antennz longer than the body, setaceous ; the 
scape, basal joint of the flagellum, and the joints (12-18) yellow, 
the rest of a blackish brown ; the region of the ocelli and middle 
of the pectus black; the wings pale yellowish-hyaline, their 
apex broadly fuscous. 
Hab. North China. Robert Fortune, Esq. 
Genus DeREcYRTA. 
Head subglobose, the vertex swollen or convex; the eyes 
lateral, large and ovate ; the ocelli prominent, and placed in a 
triangle between the eyes; the antenne setaceous, composed of 
23 joints; the scape short, curved, and slightly thickened to- 
wards the apex ; the first joint of the flagellum half the length 
of the scape, the second as long as the scape, the third and four 
following joints as long as the first; the remaining joints are 
each in succession shorter than the preceding. Thorax as wide 
as the head, oblong, the sides parallel; the prothorax narrowed 
anteriorly into a short neck; the mesothorax slightly elevated 
in front; the scutellum elevated ; the anterior wings with one 
marginal and four submarginal cells; the marginal cell elon- 
gate, with a short appendix at the apex; the first submarginal 
cell small, the second oblong, widest at the apex, the third sub- 
quadrate, the fourth extending to the apex of the wmg; the 
second and third cells each receive a recurrent nervure a little 
within near their base; the tibiz bispinose at their apex. Abdo- 
men cylindrical, about twice the length of the head and thorax ; 
the ovipositor short, and slightly exserted. 
Derecyrta pictipennis. 
D. ochracea, nitida ; capite, abdominis apice, antennis pedibusque 
nigris ; alis fuscis, basi fasciaque transversali flavo-hyalinis. 
Female. Length 9 lines. Head shining black, smooth and 
impunctate behind the ocelli, coarsely and irregularly striated 
before them ; the mandibles short, stout, and armed with three 
acute teeth, striated externally. Thorax ochraceous, shining ; 
the mesothorax with three deep longitudinal grooves, the spaces 
between them transversely and coarsely striated, beyond the 
grooves finely punctured ; the scutellum and metathorax finely 
punctured ; wings brown, their base flavo-hyaline ; a broad flavo- 
hyaline fascia crosses the wings at the base of the marginal cell ; 
