256 
Psyche 
[December 
and localities on which the measurements were based are given under 
“Sample” so that the user can judge crudely how nearly the natural 
variance may be represented by the range of values given. 
Following the dichotomous key is a glossary of the most important 
morphological terms used in species identification. 
Table of the most valuable quantitative characters of the 
Strumigenys species of the New World 
The table is arranged in order of size as based chiefly on head 
length. The measurements (in hundredths of millimeters) HL (head 
length), ML (mandibular length) and WL (Weber’s diagonal length 
of alitrunk), as well as the proportions Cl (cephalic index) and MI 
(mandibulo-cephalic index), are explained in the preceding section. 
ID indicates the number of small teeth or denticles lying between the 
two main teeth of the apical fork of the mandible, and PT is the 
number of teeth along the inner margin of the mandible proximad of 
the dorsal apical tooth (not counting the basal lamella, which is usual- 
ly hidden beneath the clypeal margin) ; these preapical teeth may be 
large and spiniform or may be reduced to exceedingly minute denticles. 
The sample indicates the number of specimens measured and, follow- 
ing a dash, the number of separate localities represented by the speci- 
mens. 
Species 
HL 
Cl 
ML 
MI 
WL 
ID 
PT 
Sample 
mandibularis 
131 
- — 402 
' — '51 
' — 38 
— 
1 
2 
1 
godmani 
106-120 
87-93 
51-55 
46-48 
109-122 
1 
2 
8-2 
sanctipauli 
98 
76 
96 
98 
103 
1 
2 
1 
fairchildi 
96 
75 
59 
61 
101 
2 
2 
1 
precava 
87-101 
71-79 
50-56 
54-61 
81-97 
1 
1 
92-7 
sp. nr. micretes 
86-90 
75-76 
58-61 
67-68 
92-99 
1 
0-2 
25-1 
saliens 
81-95 
69-77 
50-60 
60-65 
82-97 
1 
1 
38-9 
dolichognatha 
84-90 
75-77 
104-108 
119-124 
— 
1 
2 
6-1 
cultriger 
85 
77 
51 
60 
90 
1 
2 
1 
planeti 
80-89 
80-86 
45-50 
52-57 
80-90 
1 
2 
39-5 
tococae 
80-85 
75 
44-47 
55 
80-87 
2 
2 
8-1 
trimdadensis 
78-83 
78-82 
52-56 
66-69 
80-88 
1 
2 
12-6 
longispinosa 
78-80 
72-74 
71-72 
90-91 
80-81 
0 
1 
2-1 
cordovensis 
73-82 
76-80 
83-92 
109-123 
— 
1 
2 
40-8 
prospiciens 
74-80 
79-83 
41-46 
56-60 
75-82 
1 
2 
8-3 
sublonga 
74-79 
76-80 
72-75 
96-98 
73-79 
1 
2 
7-1 
rehi 
76 
76 
76 
100 
80 
1 
2 
1 
borgmeieri 
74 
65 
52 
67 
77 
1 
2 
1 
lacacoca 
70-76 
67-71 
45-53 
60-70 
72-82 
1 
0-1 
8-2 
