INDEX OF GENERA AND SPECIES. 
Nore. — Names of species represented in the “ Albatross” collection of 1891 are printed in capitals. Syn- 
onyms are printed in Italics. ‘The figures in heavy type indicate the pages on which genera and species are 
described. 
Acanthephyra, 159, 160, 241. Actza, 16. 
acutifrons, 164, 167. 
AGASSIZII, 161, 244, 249, 250, 256, 257, 
262. 
APPROXIMA, 162, 244, 256, 258, 262. 
armata, 160. 
batei, 167. 
benedicti, 166. 
BREVIROSTRIS, 167, 244, 257, 262. 
CRISTATA, 162, 256, 257, 262, Plate 
XLIII., Fig. 1. 
CUCULLATA, 167, 256, 262, Plate XLIV., 
Fig. 1. 
CURTIROSTRIS, 164, 244, 256, 257, 258, 
262, Plate XLIII., Fig. 2. 
CURTIROSTRIS, var. a, 165, 259, Plate 
XLUL., Fig. 3. 
CURTIROSTRIS, var. B, 165, 258, 259, 
Plate XLIII., Fig. 4. 
CURTIROSTRIS, var. y, 165, 256, 259, 
Plate XLIIL., Fig. 5. 
debilis, 163. 
gracilis, 163. 
heckelii, 160. 
lanceocaudata, 160, 163, 164. 
planipes, 166. 
purpurea, 161, 244, 249. 
sanguinea, 161, 244. 
sica, 161. 
tenuipes, 166. 
Acanthonyx petiverii, 235. 
Achelous, 23. 
AFFINIS, 23, 236, 256, 257, 260, Plate 
IV., Fig. 1. 
BREVIMANUS, 23. 
depressifrons, 24, 256. 
SPINIMANUS, 23, 24, 235, 257, 260. 
povit, 16, 236. 
labyrinthica, 17. 
nodosa, 236. 
setigera, 236. 
suleata, 236. 
Acteomorpha, 33. 
/&geon, 134. 
cataphractus, 134. 
loricatus, 134. 
Bthra seruposa, 257. 
scutata, 237. 
Atthusa, 27, 34, 241. 
challengeri, 36. 
CILTATIFRONS, 34, 256, 260, Plate V., 
Fig. 3. 
gracilipes, 36. 
LATA, 85, 236, 257, 260, Plate VI., 
Fig. 1. 
microphthalia, 35, 236. 
pubescens, 30. 
sinuatifrons, 36. 
/Ethusina, 27, 36, 241. 
abyssicola, 36, 37, 245. 
CHALLENGERI, 36, 37, 243, 258, 260. 
GRACILIPES, 36, 243, 257, 258, 260. 
gracilipes, var. robusta, 36. 
sinuatifrons, 36. 
SMITHIANA, 37, 243, 257, 260, Plate 
VI., Fig. 2. 
Alpheus, 155, 235. 
heterocheles, 235. 
minor, 235. 
PANAMENSIS, 155. 
pelagicus, 160. 
spinifrons, 156. 
Amalopeneus, 208, 249. 
