8 CLEVE, DIATOMS FROM THE WEST INDIAN ARCHIPELAGO. 
»Navicula, ab altera line&e longitudinalis parte pinnulis longis, 
ab altera parte pinnulis brevibus predita, sectione transversa 
rhomboidea.» 
91. Alloioneis (Navicula?) Antillarum Ci. & Gr. N. Sp 
Elliptic oblong of about the same outline as Nav. aspera. 
Median line a little eccentric and curved. Strie com- 
posed of large distinct puncta, arranged in somewhat irre” 
gularly decussating oblique lines. The strige reach in 
the one half of the valve very closely to the median line, 
leaving only a small area around the nodule, but they 
disappear on the other half at some distance from the 
median line, being consequently on this side surrounded 
by a long not striate area. IL. 0,12 m.m. Fig. 11. 202. 
— St. Bartholomew (rare). Golf of Mexico (A. GRUNOW). 
Mr. GRUNOW has kindly allowed me to publish his de- 
scriptions and delineations of two interesting species from the 
East Indies, allied to the two last species. 
»Navicula (Alloioneis?) Kurzii Grus. N. Sp. Valve broad, 
lanceolate. Median line eccentric, curved, surrounded by an 
eccentric blank space, which is irregularly enlarged in the 
middle and becomes narrower toward the ends. The rest of 
the valve is covered with granules, like those on Navicula 
aspera, forming decussating oblique lines and more narrow 
transverse ones, 10—11 in 0,01 m.m.. The transverse lines 
reach as far as to the median line, if seen under a mighty 
power, but in the smooth part of the valve they are not set 
with granules, and therefore scarcely visible. — L. 0,09— 
0,105 m.m. B. 0,036 m.m. Hab. Mangroove Svamps, Ele- 
phant Point, East Indies. Coll. by Kurz. — Fig. 12 a. Valve 
= 0. Entire frustule 2". The fig. shows partly the upper, 
and partly the under surface. c. Granules, seen with centric 
illumination 2. od. Granules, seen with oblique illumination 
22, The longitudinal lines are also visible on Navicula as- 
pera, but not distincetly.» 
»Navicula (Alloioneis?) curvinervia GrRun. N. Sp. Valve 
oblong or lanceolate, with obtuse ends. Median line eccen- 
tric. Strie slightly radiating, not reaching the median line, 
interrupted by two sharp, longitudinal bends of the valve, 
smooth (under a very high power and favourable illumination 
delicately punetate), 3—9 in 0,01 m.m. — L. 0,068—0,115 
9NN 
m.m. Br. 0,022—0,028 m.m. Fig. 15. 2 
