— 127 



65. P. labuense Gl. Gl. Vega Exp. tab. XXXVII, fig. 62. 

 Solitary in a sample from KKt. 



Area: Borneo. 



66. P. polygibbum Gl. & Grove. Leud. Fortm. Ceylon tab. IX, fig. 90. 

 Solitary in a sample from KKt. 



Area: Macassar Street, Ceylon, Malay Archipelago. 



67. P. pulchellum Grev. Grev. Mie. Journ. 1859, tab. X, figs. 4-6. 

 KKt, KKm, KMn-CLt (4 samples). 



Area: Nassau, New Providence, Jamaica, Californian Guano, Borneo, 

 Ceylon. 



68. P. Robertsianum Grev. Trans. Mie. Soc. XI, N.S., tab. I, fig. 1 -2. 



L. 0,03 mm., b. 0,0072 mm. Striæ 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 Gre ville, 

 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. pygmæum Grev. Grev. Mier. Journ. 1859, tab. X, fig. 11. 

 KKt (4 samples). 



Area: Nassau, New Providence, Cap of good Hope, Red Sea, Ceylon. 



70. P. Seychellarum Grun. GI. Vega Exp. tab. XXXVII, fig. 59. 

 KKm (1 sample). 



Area: Seychelles, Labuan, Borneo. 



71. P. sumatrense Leud. Fortm. Leud. Fortm. la Mai. tab. II, fig. 12. 

 Solitary in a sample from KKt. 



Area: Sumatra. 



72. P. tenuistriatum Gl. Gl. Vega Exp. tab. XXXVII, fig. 63. 

 Solitary in a sample from KKt. 



Area: Borneo. 



73. P. tesselatum Grev. Grev. Mier. Jour. 1859, tab. X, fig. 7. 

 KKt, KMn-CLt (4 samples). 



Area: Borneo, between Aden and Bab el Mandeb, Californian Guano. 



