118 HALF-AN-HOUR AT THE MICROSCOPE. 



enlarged, greatly curved at their tips, strengthened with much 

 chitinous material, as predicated by their deep colour — " claw, or 

 clasping hairs." One of the most curious points shown in the 

 specimen seems to myself to be the thin fold of skin, crenated at 

 the edges in a number of indentations, corresponding to the 

 claws, and which serves to cover them like a veil. It requires rather 

 a high power and some care to see this ; but of its existence there is 

 no question, though it is not easy to conceive for what special 

 purpose it can be required. 



TuFFEN West. 



EXPLANATION OF PLATE XIV. 



Details of Ophion luteum. 

 Fig. 1. — Eye, showing dark, club-shaped mark. 



2. — Tropin: — m. , mandible; mx. , maxilla; mxp. , maxillary 

 palpus ; Ihr. , labrum ; lb. , labium ; Ibp. , labial palpus. 



3. — The wings of one side, showing areolation, position of the 

 hooks, and of the thickened portion of fore-wing, on which 

 they work. 



4. — a, 6, the hooks shown in different positions, eight in number on 

 one wing, nine on the other. 



5. — Abdomen, the segments numbered consecutively: d., the 

 dorsal ; v., ventral portions. Seven pairs of spiracles are 

 seen, the barbed portions of the ovipositor, and their sheath. 



6. — Last joint of the tarsus from the intermediate leg of the 

 right side. The fleshy organ borne on a pedicle between the 

 strongly pectinated claws is a sucker, of a type specially 

 characteristic of the Hymenoptera, as Bees, Wasps, Ants, 

 Ichneumons, Saw-Flies, etc. Two long vibrissse on each claw 

 form a noticeable feature here. 



11. — Egg of Ophion luteum on long curved peduncle, by which it 

 is attached to the body of the larva of the Puss- Moth. 



12. — The egg hatched, and still retaining the extremity of the 

 body of the larva. 



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,, 7. — Seed of Typha latifolia. 



,, 8. — Gizzard of Cockroach: — a, end of the crop ; h, the gizzard, 

 in profile ; c, commencement of the ossophagus. 



,, 9. — Gizzard of Cockroach, as seen from above. 



10. — Diagrammatic sketch of saws of Cercopis sanguinolenta : a, 

 one of the inner pairs of large ovipositors ; 6, one of the 

 outer pairs of saws, finely toothed ; c, the sheath. 



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