924 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



PLATE Vn. 



The original drawings, both plain and colored, 

 were made by Mr. J. Henry Blake, of Cambridge. 

 Fig. 1. Rctinia fruslrana. The moth, enlarged 

 three diameters. 



2. Side view of chrysalis, enlarged three di- 



ameters. 2a. One of the abdominal joints 

 enlarged nine diameters, to show the 

 rows of spines and ridges. 



3. Front view of chrysalis,enlargedthreedi- 



ameters. 3a. The terminal joints of the 

 abdomen, enlarged nine diameters, to 

 show the arrangement of spines and 

 hairs at the tip of the body. 



4. Full-grown caterpillar, enlarged four di 



ameters. 



5. Terminal shoot of the pine in an unin- 



jured, natural condition. 



6. Terminal shoot which has been attacked 



by the insect when the apical leaves 

 were only partly grown ; away from the 

 tip the needles have nearly or quite at- 

 tained their full growth before the 

 mining operations of the caterpillar had 

 sapped their supply of nourishment. 



7. Terminal shoots in a healthy condition, 



stripped of its needles, to contrast 

 with fig. 9. 



8. An infested shootout open to lay bare the 



mine of the caterpillar in its latest stage, 

 the refuse which nearly fills it has been 

 removed. The length of the terminal 

 needles shows this shoot to have been 

 well advanced in its growth before it 

 was attacked. 



9. A shoot similar to that represented in 



fig. 7, but which has been distorted by 

 the attacks of the insect. 



PLATE VIII. 



Fig. 1. rorfna;/»mi/era7ia; la, enlarged; 16, side. 

 Ic, dorsal view of caterpillar; Id, the 

 same enlarged; ie, pupa; 1/, the same, 

 enlarged. Miss J. Sanders del. 



2. Tephrosia cribrataria. Miss L. Sullivan 



del. 



3. Lophyrus sp. on cedar. Bnmpus del. 



4. Lophyrus sp. on spruce. Wilder del. 



5. Lophyrus sp. on spruce ; a, end of body 



enlarged. Wilder del. 



6. Syrphus larva, on cedar. Bumpus del. 



PLATE IX. 



Fig. 1. Nematus erichsonii: la, natural size; 16, 

 larva in diiferent stages. Id, twig of 

 larch defoliated. Miss Sullivan del. ; Ic, 

 cocoon nat. size. 



2. Oelechia abietisella ; 2o, the rude cases of 



dried hemlock leaves. Miss Sullivan del. 



3. Geometrid larva on larch : a, head ; 6, end 



of body, enlarged. Wilder del. 

 * The green shades in this plate are too 



PLATE X. 



Fig. 1. Drepanodes varus. Two caterpillars closely 

 mimicking a j uniper twig. Emerton del. 



2. Geometrid larva. Miss Sullivan del. 



3. Geometrid larva. Miss Sullivan del. 



4. Eupithecia luteata. Miss Sullivan del. 



5. Geometrid larva on pine. Miss Sullivan deL 



6. Lyda sp. on pine. Miss Sullivan del. 



7. Lyda sp. on spruce. Wilder del. 



PLATE XL* 



Fig. 1. Ceratomia aniyntor. J. A. Lintner del. 



2. Sphinx kalmio'. J. A. Lintner del. 



3. Smeriiithus exccecatus. J. A. Lintner del. 



4. Smerinthus juglandis. J. A. Lintner del. 



5. Ellema harrisii. J. A. Lintner del. 



6. Nadata gibbosa. J. A. Lintner del. 



7. Oertira occidentalis. J. A. Lintner del. 



8. Platycerura furcilla. J. A. Lintner del. 



PLATE XIL 



Map of Maine, showing the regions known ta 

 have been infested by bark-boring bee- 

 tles and other borers, and by the spruce- 

 bud worm. The red line indicates only 

 approximately the boundary line be- 

 tween the Canadian and Alleghanian 

 faunas, the line having been drawn by 

 Prof. C. H. Fernald and myself. 



PLATE XIII. 



Spruce woods devastated by the spruce bud-worm. 

 New wharf road, Brunswick, Me. 



PLATE XIV. 



Nearer view of spruce killed by the spruce bud- 

 worm ; fame locality as on pi. XIII. 



PLATE XV. 



OVIPOSITOR OF CTNIP8 Q. FOLII, EUROPEAN OAK 

 GALL-FLY. 



Fig. 1. Abdomen of Cynips, showing the great 

 dorsal segment, the peduncle, and the 

 disposition of the ovipositor within. 



2. The whole ovipositor ; a, lateral scale ; a', 



its valve ; 6, anal scale ; 6', stylet ; Cy 

 support of the stylet ; e, base or sup- 

 port of sting, fi. 



3. Profile, showing the relation of the genital 



armature to the rest of the abdomen ; 

 the sixth sternite has been drawn to 

 show its full size. 



4. Anal scale (6) and stylet; e i, supports- 



and body of the stylet ; c, piece uniting 

 the two scales. 



5. Lateral scale, a, and a' sheath ; d, support 



of the sting/. 



6. Transverse section of the body through 



the sting (diagrammatic) : B, internal 

 armature; o, oviduct; a, lateral scale; 

 a', its valve ; e, support of the stylets i ; 

 6, anal scales ; c, piece uniting two- 

 scales ; /, sting ; d, its support, 

 light, and the red in P'ig. 7 is too bright. 



