498 CLEVE, DIATOMS. 



Amphiprora delicatida Grev. (Edinb. N. Phil. J. XVIII, pag. 

 39, fig. 15—16). Length 0,075 mm. Breadth 0,oi5 mm. Striae- 

 2^ in 0,01 mm. 



Achnanthes javanica Grun. (Arct. Diat. pag. 18). 



A. seriata Grun. (Arct. Diat. pag. 19). 



Ortlioneis fimhriata (Btw.) Grun. (Van Heurck Syu. PL 

 XXVIII, fig. 3). 



0. Clevei Grun. (1. c. f. 4). 



0. hinotata Grun. (1. c. fig. 7). 



Gocconeis Scutelhim Ehb. (Van Heurck Syn. PI. XXIX, fig. 

 1—12). 



C. heteroidea Hantzch (Ost Ind. Arch. Diat. pag. 21, fig. 10). 



C. pseHdomarginata Greg. (Van Heurck Syn. PL XXIX, fig. 

 20—21). 



C dirupta var. flexeUa Grun. (Van Heurck Syn. PL XXIX, 



fig. 16). 



Epithemia Muscidus Kiitz. (W. Sm. Syn. I, pag. 14, PL I^ 

 fig. 10). 



Plagiogramma (caribseum var.?) Lahiiense CL N. Sp. — Valve 

 constricted in the middle, where there is a large annulus. 

 Transverse septa in the ends not distinct. Median raphe 

 distinct. Striae, composed of separate puncta, 11 in 0,oi mm. 

 Length 0,05 mm. Breadth 0,oii mm., at the constriction 0,oo7 

 mm. — PL 37, fig. 62. 



P. Seychellarum Grun. in litt. — Valve elliplic with rounded 

 ends. Centre with a large annulus, ends without cost^e. Striae 

 fine, transverse, absent in the middle and at the ends, 18 in 

 0,01 mm., composed of fine puncta forming oblique lines (16 

 in 0,01 mm.). There is a distinct median raphe. Length 0,o75. 

 Breadth 0,oi3 mm. — PL 37, fig. 59 a, b. 



P. interruptum var. adriatica Grun. (Van Heurck Syn. PL 

 XXXVI, fig. 1)? Transverse striae 26 in 0,oi mm. composed 

 of puncta forming longitudinal striae, 2Q in 0,oi mm. Median 

 raphe distinct. Length 0,056 mm. Breadth 0,oo8 mm. — PL 

 37, fig. 61 a. b. 



P. decussatum Grev. (T. M. S. XIV, pag. 1, PL I, fig. 22). 



P. ohesum Grev. (M. J. VII, pag. 211, PL X, fig. 12—13). 



P. tenuistriatum CL N. Sp. — Elliptic with rounded ends. 

 Central annulus large; no costae at the ends. Striae transverse, 

 18 in 0,01 mm., composed of distinct puncta, which also form 

 longitudinal lines. Length 0,o32. Breadth 0,oi mm. — PL 37, 

 fig. 63. 



P. pygmceum Grev. (M. J. VII, pag. 211, fig. 11). 



