127 279 
65. P. labuense Cl. Cl. Vega Exp. tab. XXXVII, fig. 62. 
Solitary in a sample from KKt. 
Area: Borneo. 
66. P. polygibbum Cl. & Grove. Leud. Fortm. Ceylon tab. IX, fig. 90. 
Solitary in a sample from K Kt. 
Area: Macassar Street, Ceylon, Malay Archipelago. 
67. P. pulchellum Grev. Grev. Mic. Journ. 1859, tab. X, figs. 4—6. 
KKt, KKm, KMn—C Li (4 samples). 
Area: Nassau, New Providence, Jamaica, Californian Guano, Borneo, 
Ceylon. 
68. P. Robertsianum Grev. Trans. Mic. Soc. XI, N.S., tab. I, fig. 1 —2. 
L. 0,03 mm., b. 0,0072 mm. Strie more than 20 in 0,01 mm. 
very delicate. I am not able to see any longitudinal striation. 
Solitary in a sample from KKt. 
Area: Port Stephen, New South Wales. 
This Plagiogramma of which I have seen but a single specimen 
agrees in its whole habit well with the above quoted figure by Greville, 
but it is much more closely striate. As I have not been able to see any 
longitudinal striation, I dare not refer it to P. interruptum (Greg.) Ralfs 
var. adriatica Grun. (Cl. Vega Exp. tab. XXXVII, fig. 61), the species to 
which it comes nearest by its more delicate striation but from which it 
differs by its breadth. 
Area for P. int. adriat.: Adriatic, Borneo. 
69. P. pygmeum Grev. Grev. Micr. Journ. 1859, tab. X, fig. 11. 
K Kt (4 samples). 
Area: Nassau, New Providence, Cap of good Hope, Red Sea, Ceylon. 
70. P. Seyechellarum Grun. Cl. Vega Exp. tab. XXXVII, fig. 59. 
KKm (1 sample). 
Area: Seychelles, Labuan, Borneo. 
71. P. sumatrense Leud. Fortm. Leud. Fortm. Ja Mal. tab. II, fig. 12. 
Solitary in a sample from KK1. 
Area: Sumatra. 
72. P. tenuistriatum Cl. Cl. Vega Exp. tab. XXXVII, fig. 63. 
Solitary in a sample from K Kt. 
Area: Borneo. 
73. P. tesselatum Grev. Grev. Micr. Jour. 1859, tab. X, fig. 7. 
KKt, KMn--CLt (4 samples). 
Area: Borneo, between Aden and Bab el Mandeb, Californian Guano. 
