1962] Brown — Strumigenys 257 
micretes 
70-76 
71-74 
45-51 
62-68 
72- 
1 
2 
18-2 
smithii 
67-76 
80-87 
36-42 
52-61 
70-78 
1 
2 
26-6 
biolleyi 
60-81 
78-85 
35-51 
58-66 
-86 
1 
2 
51-11 
ludia 
67-74 
81-84 
49-56 
73-76 
62-73 
1 
0 
9-6 
marginiventris 
68-73 
78-82 
51-57 
75-79 
68-72 
0 
1 
11-3 
producta 
65-70 
78-82 
45-48 
69-70 
69-74 
2 
1 
15-1 
consanii 
64-66 
78-80 
41-42 
63-64 
76-80 
0 
0 
5-1 
hindenburgi 
60-69 
83-88 
38-40 
58-64 
63-71 
1 
2 
9-3 
deltisquama 
62-67 
95-97 
34 
51-55 
60-63 
1 
2 
12-1 
xenognatha $ 
65 
79 
41 
63 
84 
2 
2 
1 
connectens 
60-65 
81-86 
33-37 
53-56 
64-73 
2 
3-4 
7-2 
nevermanni 
61-63 
77-80 
36-38 
58-60 
67- 
1 
1 
8-1 
emeryi 
59-64 
80-82 
38-40 
61-64 
65-69 
1 
2 
10-4 
laevipleura 
58-62 
79-82 
33-35 
56-57 
65-66 
2 
3 
3-1 
hemidisca 
60 
82 
39 
65 
64 
1 
2 
3-1 
rogeri 
57-62 
70-74 
30-34 
53-55 
— 
0 
2 
11-9 
trieces 
58 
78 
28 
48 
62 
2+? 
3 
1 
elongata 
50-63 
72-79 
28-41 
56-67 
47-62 
0 
0 
161-25 
ogloblini 
55-56 
80-81 
28-29 
51-52 
' — '55 
1 
1 
2-1 
louisianae 
46-64 
77-92 
23-37 
49-67 
— 
2 
1 
130-71 
mixta 
51-59 
80-84 
28-32 
54-60 
51-60 
2 
2 
20-2 
jamaicensis 
52-56 
81-82 
40-42 
75-77 
55-57 
2 
6-8 
12-2 
boneti 
50-56 
80-82 
28-30 
50-60 
50-57 
1 
1 
4-3 
subedentata 
48-56 
82-86 
26-30 
53-54 
47-60 
2 
4-6 
36-15 
denticulata 
42-48 
77-80 
31-39 
74-83 
42-49 
2 
5-9 
11-6 
gundlachi 
40-49 
79-86 
24-32 
59-66 
40-50 
2 
4-9 
36-20 
silvestrii 
42-47 
77-81 
24-26 
55-60 
41-50 
1 
2 
11-4 
eggersi 
39-47 
83-88 
22-27 
56-64 
39-46 
2 
4-8 
32-22 
schmalzi 
42 
79 
27 
64 
44 
0 
2 
1 
perparva 
40 
81 
20 
50 
40 
0 
1 
2-1 
carinithorax 
36 
81-83 
21-22 
59-61 
41 
0 
2 
3-1 
Dichotomous key to the known species of Strumigenys occurring in the 
New World, based chiefly on the worker caste, but applying 
to the females of most species as well 
1. Apical fork of mandible without distinct intercalary teeth or 
denticles (Fig. 17) 2. 
Apical fork of mandible with a single intercalary tooth or denti- 
cle, either separate or occurring as a spur on the inner side of the 
ventral tooth (Figs. 18, 19) 9. 
Apical fork of mandible with 2 (rarely 3-4) intercalary denticles 
(Figs. 20, 21) 38. 
2. Mandible without preapical teeth or denticles (Fig. 1) 3. 
Mandible with 1 or 2 preapical teeth and/or denticles (Fig. 16) 
4 . 
