NORTH AMERICAN LEPIDOPTERA. 241 



EXPLANATION OF PLATES. 



-o- 



PLATE IV. 



1. Hemaris thysbe — a, supra-anal plate; h, side piece; c, clasper (J'<J>(?oe)is/s 



shows ail identical structure). 



2. Hemaris rubens— a, supra-anal plate from side; 6, same from below (tenuis 



docs not differ). 



3. Pterog-on clarkei— supra-anal plate from side. 



4. Pterogon clarkei — fore tibia, showing armature. 



5. ^llopos tantalus — supra-anal plate from above. 



6. ^Uopos tantalus — supra-anal plate from below, showing the division of the 



plate which is invisible from above. 



7. .ffillopos tantalus — side piece, clasper and spinose penis sheath. 



PLATE V. 



1. Enyo lug-vibris— side piece. 



2. Bnyo lugubris — supra-anal plate from side. 



3. Amphion nessus— supra-annl plate from side and above. 



4. Amphion nessus — sheath of penis and the hooked tip of penis. 



5. Thyreiis abbotii — side piece and clasper. 



6. Thyreus abbotii— supra-anal plate. 



7. Deilephila gallii — sujira anal plate. 



8. Deilephila g-allii — side piece and clasper. 



9. Deilephila lineata — clasper (side piece as in gallii). 



PLATE VL 



1. Pachylia flcus — supra anal plate from above. 



2. Pachylia flcus — side piece and clasper. 



3. Philampelus pandorus- supra anal plate (this structure is similar in all 



sjiecies). 



4. Philampelus pandorus — side piece and clasper [linnei is similar in this 



respect). 



5. Philampelus achemon — side piece and clasper. 



6. Philampelus vitis - clasper. 



7. Chcerocampa tersa — side piece and clasper (supra-anal plate as in Ampe- 



Jophaga). 



8. Ampelophaga chCBi'ilus- -supra-anal plate {the other species are similar). 



9. Ampelophag-a myron — clasper. 



PLATE VII. 



1. Ampelophaga chcBrilus — side piece and clasper. 



2. Ampelophaga versicolor — side piece and clasper. 



3. Deidamia inscriptupa- -side piece and clasper. 



4. Amphonyx antseus — palpus. 



5. Cautethia grotei — supra-anal plate from side. 



6. Cautethia grotei — side piece and clasper. 



7. Dilophonota obscura — supra-anal plate from above ; the inferior plate is (jf 



the same shape, but the forks are smooth, slender and cylindrical. 



8. Dilophonota obscura — side piece and clasper ; a, clasper still more enlarged. 



PLATE VIII. 



1. Dilophonota edwardsii — upper supra-anal plate. 



2. Dilophonota edwardsii — lower supra-anal plate. 



3. Dilophonota edwardsii — side piece and clasper. 



4. Dilophonota merianse — upper supra-anal plate. 



.5. Dilophonota merianse— lower supi-a-anal plate (the clasper is as in D. ello). 



6. Dilophonota ello —side piece and clasper; the supra-anal plates are very 



similar to those of D. ohscura. 



7. Protoparce celeus — supra-anal plate (very similar in the other species). 



8. Protoparce celeus — side piece and clasper. 



9. Protoparce cingulata — side piece and clasper. 



TRANS. AMEK. KNT. SOC. XV. (31) SEPTEMBER, 1888. 



