254 



U.S. NATIONAL MUSEUM BULLETIN 2 92 



Panopeus crassus, 154 



herbstii, 6 (list), 15 (distribution), 

 33 (ecology), 35, 153 (key), 154, 

 155 (figs. 46c, 47) 

 herbstii f. crassa, 154 

 herbstii f. obesa, 154 

 herbstii f. simpsoni, 154 

 Herbstii, 154 

 Herbstii granulosus, 154 

 Herbstii mlnax, 154 

 Herbstii var. obesus, 154 

 lacustrls, 154 

 hmosus, 153 

 Parastacidae, 18 

 Paratya, 21 

 pearsei, Typhlatya, 20 

 pectinatus, Metagrapsus, 3 

 pelll, Grapsus, 160 

 Penaeidae, 4 (list), 17 (distribution), 



28, 32, 50 (family key), 51 

 Penaelnae, 4 (list), 51 (key) 

 Penaeus, 35 (ecology), 52 

 aztecus, 52 



aztecus subtilis, 4 (list), 15 (distribu- 

 tion), 33 (ecology), 52 (key), 

 52-53, 56 (fig. 7a) 

 brasiliensls, 4 (list), 15 (distribution), 

 33 (ecology), 52 (key), 53, 56 (fig. 

 76) 

 Brasiliensls var. Aztecus, 52 

 duorarum, 53 

 duorarum duorarum, 54 

 duorarum notlalis, 4 (list), 15 (distri- 

 bution), 33 (ecology), 52 (key), 

 63-54, 54 (fig. 5), 56 (fig. 7c) 

 Kroyeri, 55 



schmitti, 4 (list), 15 (distribution), 

 33 (ecology), 52 (key), 5^-55, 56 

 (fig. 7d) 

 setlferus, 54 

 Periclimenes portoricensis, 94 

 petitinga, Leander, 111 

 Petrolisthes, 121-123 



quadratus, 5 (list), 15 (distribution), 

 33-34 (ecology), 121-123, 122 (fig. 

 32). 125 (fig. 34a), 159, 175; pi. 

 Zx, B (habitat) 

 pictus, Grapsus, 163 



Grapsus (Goniopsis), 163 

 pilosipes, Uca, 219 



pisonii, Aratus, 6 (list), 15 (distribu- 

 tion), 16. 33 (ecology), 35, 156 

 (key), 172-173, 173 (fig. 54), 178 

 (fig. 58a) 



Pisonii, Aratus, 172 



Sesarma, 172 

 Plagusia, 32, 192, 194 



depressa, 6 (list), 15 (distribution), 

 33-34 (ecology), 156 (key), 190 

 (figs. 62r-0, 192-194, 193 (fig. 63) 

 depressus, 192 

 gracilis, 192 

 sayi, 192 

 squamosa, 192 

 Plagusiinae, 6 (Hst), 156 (key), 192 

 Platychu-ograpsus typicus, 27 

 platydactylus, Gelasimus, 213 

 poegi, Barbouria, 116 

 poey, Barbouria, 116 

 poeyi, Barbouria, 116 

 Micraitya, 70 



Micratya, 5 (list), 14 (distribution), 

 19, 33 (ecology), 36, 57 (key), 

 70-76, 71 (fig. 12), 72 (fig. 13), 73 

 (figs. 14^, i) 

 Micratyia, 70 

 Poeyi, Atya, 70 

 Calmania, 70 

 Micratya, 70 

 Porcellanidae, 5 (list), 17 (distribution), 



28, 32, 51 (family key), 121 

 portoricensis, Periclimenes, 94 

 Portoricensis, Boscia, 141 

 Portunidae, 5 (list), 17 (distribution), 



28, 32, 51 (family key), 127 

 Portuninae, 5 (list), 127 

 Portunus diacantha, 133 

 Potamia americana, 149 



dentata, 143 

 Potamidae, 27 



Potamocarcinus (Pseudothelphusa) afl5- 

 nis, 148 

 americanus, 149 

 dentatus, 143 

 dugesi, 149 

 terrestris, 150 

 Potamogeton, 69 



Potimirim, 2, 18, 20, 28-29 (origin), 

 36 (ecology), 70, 78 

 americana, 5 (list), 14 (distribution), 

 19, 20, 33-34 (ecology), 57 (key), 76, 

 86 (fig. 19a) 

 brasiliana, 76 



glabra, 5 (list), 15 (distribution), 

 20, 31, 33 (ecology), 36, 57 (key), 

 76-79, 77 (fig. 15), 86 (figs. 196, c) 



