Smulyan. — Tenthredella. 
EXPLANATION OF PLATES. 
All figures, except 5 and 6 (Plate 4), were prepared with the aid of the camera 
lucida. 
PLATE 4. 
Fig. 1. — Dorsal view of the head of Tenthredella verticalis (Say), female, 
e, eye; es, epicranial suture; }v, frontal fovea; o, ocellus; s?-, supra-antennal 
ridge; vp, vertex-plate. 
Fig. 2. — Ventral view of the posterior portion of the abdomen of Tenthre- 
della verticalis (Say), female, ce, cercus; so, sheath of ovipositor; st^, sixth 
sternum; t, tergum. 
Fig. 3. — Front view of the head of Tenthredella verticalis (Say), female, as, 
antennal socket; ch, cheek; cl, clypeus; ch, hyperclypeus; e, eye; es, epicranial 
suture; /, tentorial fossae; Jv, frontal fovea; lb, labrum; md, mandible; o, 
oceUus; sr, supra-antennal ridge. 
Fig. 4. — Ventral view of the posterior portion of the abdomen of Tenthre- 
della verticalis (Say), male, the posterior portion of the genitaUa showing at the 
end. c-p, clasper of the genitalia; hy, hypopygidium; st^, sixth sternum; t, 
tergum. 
Fig. 5. — Lateral view of the posterior portion of the saw of Tenthredella 
rufopecta rufopecta (Norton), greatly enlarged. 
Fig. 6. — Lateral view of the posterior portion of the saw of Tenthredella 
verticalis (Say), greatly enlarged. 
