REPORT ON THE TUNICATA. 
427 
Pharyngudidyon mirdbile, 19, 149, 153, 157, 353, 
358, 363, 367, 372, 374, 378, 383 (PL 
xxi). 
Philippine Islands, 36, 42, 46, 48, 73, 94, 127, 129, 
141, 212, 272, 292, 342, 343, 355, 360, 366, 
381, 386. 
Phylogeny, 28, 32, 37, 161, 381, 384, 387, 399. 
Pigment cells, 14, 18, 46, 51, 117, 118, 128, 130, 132, 
382, 
Polycarpa, 324, 325, 326, 412, 414. 
„ aspera, 415 (PI. xlvii. figs. 3-5). 
„ hassi, 413 (PL xlix. figs. 1-3). 
„ longisipTionica, 412, 413 (PL xlix. figs. 
4-6). 
„ mytiligera, 414. 
Polycarps, 326, 328, 332, 333, 335, 337, 340, 344, 
385. 
PolyclinidEe, 13, 14, 17, 18, 22, 23, 24, 30, 31, 70, 148, 
149, 151, 152, 153, 155, 157, 163, 164, 186, 
187, 191, 192, 194, 199, 200, 214, 215, 233, 
237, 253, 266, 317, 363, 366, 369, 372, 374, 
383, 385, 386, 388, 389, 390, 391, 392, 393, 
395, 396, 399. 
Polycliniens, 6, 15, 17, 30, 31, 148. 
Polydinoides, 149, 150, 151, 152, 164, 214, 390, 392. 
„ diapdMnum, von Drasche, 150. 
Polydinum, 29, 148, 149, 150, 151, 152, 164, 183, 
186, 187, 199, 366, 374, 390, 391. 
„ depressum, 187, 193, 355, 360, 364, 367, 
372, 375 (PI. xxvi. figs. 5-7). 
„ fungosura, 187, 190, 203, 354, 359, 364, 
367, 372, 375, 386 (PL xiv. figs. 15-23). 
„ incertum, 187, 196, 356, 361, 364, 367, 
372, 377 (PL xxvi. fig. 10). 
„ minutum, 18, 187, 197, 353, 359, 364, 
367, 372, 375, 377 (PL xxv. figs. 10-12). 
„ molle, 150, 187, 194, 203, 357, 361, 364, 
367, 372, 378, 386 (PL xxv. figs. 7-9). 
„ pyrifanne, 164, 187, 188, 354, 359, 364, 
367, 372, 375, 377 (PL xxvi. figs. 1-4). 
Polycydus, 29, 33, 35, 36, 37, 38, 39, 56, 61, 62, 63, 
67, 374, 397, 398. 
„ cyaneus, 20, 62. 
„ elongatus, 62. 
„ jefreysi, 62, 66, 363, 367, 371, 375, 385, 
394 (PL iv. figs. 6-11). 
„ lamarcM, 62, 63, 67, 68, 69, 363, 367, 
371, 378 (PL iv. figs. 1-5). 
,, renierii, 62. 
„ violaeeus, 62, 65. 
PolycynthiiB, 324. 
Polystyela, 31, 324, 326, 341, 346, 398. 
„ lemim-i, 324, 345. 
PolystyeHdae, 2, 12, 17, 31, 32, 322, 324, 325, 326, 
327, 346, 348, 365, 366, 370, 373, 374, 381, 
384, 385, 387, 388, 389, 398, 399. 
“ Porcupine ” and “Lightning” Collections, 2, 36, 41, 
53, 56, 58, 62, 63, 67, 127, 130, 209, 282, 284, 
288, 290, 295, 296, 298, 369, 401, 402, 416. 
Port Jackson, 36, 111, 191, 239, 304, 354, 378, 386, 
412. 
Port ^Yestern, 76. 
Post-abdomen, 15, 16, 30, 149, 151, 159, 162, 175. 
Prebranchial zone, 20, 86. 
Protandry, 23, 385. 
Proto-Ascidiacea, 388. 
Proto-Chordata, 388. 
Protogyny, 23, 45, 56, 69, 100, 385. 
Proto-Thaliacea, 387, 388. 
Proto-Tunicata, 387, 388, 389. 
Psammaplidiuvi, 13, 150, 151, 152, 237, 238, 366, 
383, 390, 392, 419, 420. 
effrenatum, 149, 238, 241, 357, 361, 
364, 368, 372, 378 (PL xxxii. 
figs. 6, 7). 
exiguum, 238, 245, 352, 358, 364, 
368, 373, 377, 386 (PL xxxi. figs. 
11 , 12 ). 
flavum, 238, 249, 357, 361, 364, 
368, 373, 378 (PL xxxii. figs. 
11-13). 
incriLstans ( = Psammaplidium effre- 
natum), 238. 
o-vatum, 238, 246, 355, 360, 364, 
368, 373, 376 (PL xxxi. figs. 
13-16). 
pyriforme, 238, 251, 355, 360, 364, 
368, 373, 376, 419. 
retiforme, 238, 248, 353, 359, 364, 
368, 373, 377, 386 (PL xxxii. 
figs. 8-10). 
rude, 238, 242, 364, 368, 372 (PL 
xxxi. figs. 1-4). 
spongiforme, 238, 239, 247, 354, 
359, 364, 368, 372, 376 (PL 
xxxii. figs. 1-5). 
svbviride, 238, 244, 246, 247, 353, 
358, 364, 368, 373, 377, 420 (PL 
xxxi. figs. 5-10). 
Pseudodidemnum, 307, 309, 313. 
