EXPLANATION TO PLATES. 
925 
PLATE XV— Continued. 
Fig. 7. A second section simpler and more theo- 
retic than the first. 
8. Diagrammatic. All the elements of the 
sting have been reduced to pieces of the 
same form. After Lacaze-Duthiers. 
PLATE XVI. 
Fio. 1. Ohalcophora virginica: ant, antenna; Ibr, 
labrum; md, mandible ; mz, 1st maxilla; 
mz', 2d maxilla (labium) ; Ip, labial pal- 
pus (this lettering the same for the 
other figures on plates XVI-XXV ; I, 
pal, labial palpus, enlarged ; s, seta ; ch, 
chitinous support. 
2. Dicer ca divaricata, enlarged about twice; 
6. head and three thoracic segments, 
seen from beneath. 
3. Unknown larva, sweet gum tree, Houston, 
Tex. ; v, ventral view ; p, prothorax ; 
m, mesothorax ; m', metathorax. 
5. Buprestid larva from under hemlock bark ; 
a, natural size; b, head and prothorax 
from above ; c, tbe same, drawn from 
below. 
All the figures and details drawn by Dr. C. F. 
Gissler. 
PLATE XVII. 
Fig. 1. Elaphidion parallelum : a, from above ; 
6, from beneath ; /, ligula-like process 
situated behind and not between the 
labial palpi. 
2. Unknown longicorn larva under bark of 
pin oak, Houston, Tex. ; v, under side. 
3. Criocephalus agrestis: pupa, dorsal view, 
enlarged 2 times. 
3a. Criocephalus agrestis : pupa, ventral view. 
4. Melanophila, under bark of spruce ; v 9, 
under side of prothoracic disc. (See, 
also.pl. XXII, fig. 1.) 
Gissler del. 
PLATE XVIII. 
Fig. 1. Unknown longicorn larva, from under 
bark of pitch pine, Atlanta, Ga., X 2 
times ; va, head and five succeeding seg- 
ments, from beneath ; vb, 4th abdominal 
segment, from beneath ; vc, 7th abdomi- 
nal segment, from beneath ; lat, lateral 
view of head and four succeeding seg- 
ments, with prothoracic and 1st abdom- 
inal spiracle ; md, two views of the man- 
dibles. Length of larva, 37 mm ; width of 
prothoracic segment, 10 mm ; length of 
same, 4.5 mm ; width of mesothoracic, 
9.5 mm ; of 1st abdominal segment, 9 mm . 
Average width, 8.1 mm . 
2. Saperda tridentata. Length, 18 mm ; width 
of prothoracic segment, 5 mm ; v, under 
side of head and five succeeding seg- 
ments ; lat, lateral views of the same ; 
md, three views of the mandibles. 
All the figures enlarged, and drawn by C. F. 
Gissler, under the author's directions. 
PLATE XIX. 
Fig. 1. Aeemum mcestum : v, under side of thora 
cic segments, showing the three pairs 
of legs; with the three succeeding 
segments; lat, lateral view of head, three 
thoracic and 1st abdominal segments. 
2. Longicorn larva, under bark of oak, At- 
lanta, Ga. Length 18 mm ; width of pro- 
thoracic segment 5.2 mm ; ventral view 
same as dorsal. Body narrowest in the 
middle ; prothoracic segment short and 
very broad ; the elevated areas or cal- 
losities dark and prominent; antennae 
long, 4-jointed ; 2d joint much shorter 
than the first ; 4th joint minute, half as 
long as the 3d is thick ; labrum rather 
narrow ; 3 pairs of short, acute thoracic 
feet. 
3. Longicorn larva, under bark of Pinus stro- 
bus, May 26. Length I4 mm ; z, two 
fleshy processes with horny tips, on the 
median area of tergum of 9th abdominal 
segment. 
4. Longicorn larva, on sweet gum tree (log), 
Houston, Tex. Length 10 mm ; e, end of 
body, showing a curved spine on the 
dor-al side of the 9th abdominal segment, 
and on each side of the latter a fleshy 
process with a terminal bristle. 
C. F. Gissler del. 
PLATE XX. 
Fig. 1. Orthosoma brunneum; v, under side of 
three thoracic (with feet) and first two 
abdominal segments ; lat, side of head 
and four succeeding segments showing 
the feet ; Ibr, labrum and clypeus with 
front edge of epicranium. 
2. Longicorn larva from sycamore: v, under 
side of the three thoracic and four basal 
abdominal segments. 
3. Pupa of a longicorn beetle (Oncideres?) 
found under bark of pin oak, April. 
Length, 18 mm ; width of prothorax 4. 4 mm . 
Gissler del. 
PLATE XXI. 
Fig. 1. Bhagium lineatum, dorsal view : v, under 
side of head and pro- and mesothoracic 
segments; vms, one of the middle ven- 
tral segments, magnified six times ; ml, 
mala of the maxilla. 
2. Rhagium lineatum, vertex, top of head ; 
ep, front of epicranium ; oc, eyes ; cly, 
clypeus, membraneous on the edge; ch, 
two chitinous supports of (Ibr) the la- 
brum; ml, mala or single lobe of the 
maxilla mz ; md, mandible. 
3. Longicorn larva from oaklog, Providence, 
May 20. v, under side of thoracic seg- 
ments, showing the legs; ml, mala of 
maxilla; mz', labium ; sm, submentum ; 
m, mentum ; lig, ligula. 
4. Saperda larva from willow. 
Gissler del 
