NORTH AMERICAN I.EFIDOPTERA. 241 



EXPLANATION OF PLATES. 



PLATE IV. 



1. Hemaris thysbe — a, supra-aniil plate; b, side piece; c, clasy^er {biiffuloensis 



shows an identical structure). 



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



does not differ). 



3. Pterogon clarkei— supra-anal ])late from side. 



4. Pterogon clarkei — fore tibia, sbowing armature. 



5. ..^llopos tantalus — supra-anal ]>late from above. 



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



plate which is invisible from above. 



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



PLATE V. . 



1. Enyo lugubris— side piece. 



2. Enyo lugubris— supra-aual plate from side. 



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



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



5. Thyreus abbotii— side piece and clasper. 



6. Thyreus abbotii— supra-anal jilate. 



7. Deilephila gallii — supra anal plate. 



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



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



PLATE VI. 



1. Pachylia ficus — supra anal plate from above. 



2. Pachylia ficus — .side piece and clasper. 



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



si)ecies). 



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



resjiect). 



5. Philampelus achemon — side piece and clasper. 



6. Philampelus vitis - clasper. 



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



loph(Hj<(). 



8. Ampelo'phag-a choerilus --supra-anal plate (the other species are similar). 



9. Ampelophaga myron — clasper. 



PLATE VII. 



1. Ampelophaga choerilus — side piece and clasper. 



2. Ampelophag-a versicolor— side piece and clasper. 



3. Deidamia inscriptum- -side piece and clasper. 



4. Amphonyx antseus — palpus. 



^. Cautethia g-rotei— supra-anal plate from side. 



6. Cautethia grotei— side piece and clasper. 



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



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. Diloplionota edwardsii— upper supra-anal plate. 



2. Dilophonota edwardsii — lower supra-anal plate. 



3. Dilophonota edwardsii— side i>iei-e and clasper. 



4. Dilophonota merianse — upper supra-anal plate. 



r>. Dilophonota merianse— lower supra-anal plate (the cla.sper is as in D. ello). 



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



similar to those of D. obscura. 



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



8. Protopai-ce celeus— side piece and clasper. 



9. Protoparce cingulata— side piece and clasper. 



TRANS. AMER. ENT. SOC. XV. (31) SEPTEMBER, 1888. 



