FAMILY PLATYCEPHALIDAE — SCHULTZ 53 



and p. scaber Linnaeus. Our three new species (T. chiltonae, T. 

 pajnllolabium,, and T. arenicola), with vomerine teeth in two patches 

 and vertical scale rows 53 to 64 above lateral line, differ from the 

 above listed species as well as from the following with 85 to 90 vertical 

 rows of scales above lateral hne: P. bosschei Bleeker, P. sundaicus 

 Bleeker, and P. ransonneti Steindachner. 



Among those species listed by Bleeker with 50 to 75 vertical scale 

 rows above the lateral Ime, P. bobossok Bleeker differs in having a 

 cirrus on the eye, whereas the following have the lateral line with 

 spiny or smooth scales for its entire length: P. isacanthus Cuvier and 

 V^alenciennes, P. bataviensis Bleeker, P. malayanus Bleeker, P. 

 polyodon Bleeker, and P. canton Bleeker. This leaves but three 

 species listed by Bleeker with the anterior part of the lateral line armed 

 with spines: P. macracanthus Bleeker, P. celebicus Bleeker, and 

 P. pristiger Cuvier and Valenciennes. P. macracanthus differs from 

 the three new species, among other characters, in having the pre- 

 opercular spine greatly elongate, longer than the eye, whereas in the 

 three new species it is less than one eye diameter. P. pristiger differs 

 m having the cranial ridges and spines minutely serrated or denticulate. 

 Thus, among those species listed by Bleeker, P. celebicus is closest to 

 our three new species, but P. celebicus differs in one important char- 

 acter from T. arenicola and T. papillolabium in having the least bony 

 width of the interorbital space contained 4.0 to 4.5 times in the eye, 

 whereas in the two new species listed the bony interorbital space is 

 contained 2.5 or fewer times. P. celebicus is closest to T. chiltonae 

 but the former has 13 or 14 anal rays whereas the latter has 11 or 12 

 anal rays. 



Jordan and Richardson (Proc. U.S. Nat. Mus., vol. 33, pp. 629-642, 

 figs. 1-4, 1908) in their review of the Japanese Platycephalidae list 

 the following species as belonging to the genus Thysanophrys: spino- 

 sus Temminck and Schlegel, macrolepis Bleeker, meerdervoortii 

 Bleeker, nematophthalmus Giinther, longiceps Cuvier and Valenciennes, 

 japonicus Tilesius, crocodilus Tilesius, scaber Linnaeus, neglectus 

 Troschel, detrusus Jordan and Seale, tentaculatus Riippell, malabaricus 

 Cuvier and Valenciennes, isacanthus Cuvier and Valenciennes, 

 malayanus Bleeker, bosschei Bleeker, bataviensis Bleeker, rodericensis 

 Cuvier and Valenciennes, borboniensis Cuvier and Valenciennes, 

 bobossok Bleeker, sundaicus Bleeker, macracanthus Bleeker, celebicus 

 Bleeker, pristis Peters, and cirronasus Richardson. 



Among those species of Thysanophrys listed by Jordan and 

 Richardson, we have already separated the following from our three 

 new species: scaber, nematophthalmus, bosschei, sundaicus, bobossok, 

 bataviensis, malayanus, isacanthus, macracanthus, and celebicus. The 

 following species listed by Jordan and Richardson have been disposed 



