| 1a |
Telson
cleft |
2 |
| 1b |
Telson
not cleft |
6 |
| 2a |
|
|
| 2b |
|
|
| 3a |
|
|
| 3b |
|
|
| 4a |
|
|
| 4b |
|
|
| 5a |
|
|
| 5b |
|
|
| 6a |
Carapace
and abdomen
with numerous long spines; cornea
of each eye divided into 2 distinct portions; body somewhat expanded
laterally |
Caesaromysis hispida |
| 6b |
Carapace
and abdomen
without numerous long spines; cornea
of eye not divided into 2 portions; body not expanded laterally |
7 |
| 7a |
Scale
of antenna 2 terminating in a stout tooth or spine, and the outer
margin
of the scale
not setose |
8 |
| 7b |
Scale
of antenna 2 without a terminal tooth or spine, and both margins of the
scale
setose |
11 |
| 8a |
|
|
| 8b |
|
|
| 9a |
|
|
| 9b |
|
|
| 10a |
|
|
| 10b |
|
|
| 11a |
Scale
of antenna 2 with a pointed apex |
12 |
| 11b |
Scale
of antenna 2 with a rounded apex |
14 |
| 12a |
|
|
| 12b |
|
|
| 13a |
|
|
| 13b |
|
|
| 14a |
Posterior margin of the last abdominal
segment with an acute mid-dorsal projection; telson
with 4 stout spines at its apex |
15 |
| 14b |
Posterior margin of the last abdominal
segment almost straight, without a mid-dorsal projection; telson
either with 2 stout spines at its apex or without such spines |
19 |
| 15a |
|
|
| 15b |
|
|
| 16a |
|
|
| 16b |
|
|
| 17a |
|
|
| 17b |
|
|
| 18a |
|
|
| 18b |
|
|
| 19a |
Abdominal
segments with transverse dorsal folds, segment 6 always with 3 pairs;
lateral
margins of the telson
with several small spines between the larger spines; apex of telson
with 4 spines (2 large, 2 small) |
20 |
| 19b |
Abdominal
segments smooth, without transverse dorsal folds; telson
armature variable |
21 |
| 20a |
|
|
| 20b |
|
|
| 21a |
Carapace
with anterolateral corners rounded |
22 |
| 21b |
Carapace
with anterolateral corners projecting and acute or nearly acute |
23 |
| 22a |
Spines along the lateral margins of the telson
arranged in such a way that each 2 larger spines are separated by
several
smaller spines |
Pacificanthomysis nephrophthalma |
| 22b |
Spines along the lateral margins of the telson
of nearly uniform size |
Stilomysis
grandis |
| 23a |
|
|
| 23b |
|
|
| 24a |
|
|
| 24b |
|
|
| 25a |
|
|
| 25b |
|
|
| 26a |
|
|
| 26b |
|
|
| 27a |
|
|
| 27b |
|
|