28 Bulletin American Museum of Natural History [Vol. LIII 
Found on the West Coast of Africa from Liberia to Benguela; always found in 
the mouths of rivers (de Man). 
Malela, 2307, 139 (3 ovigerous). Banana, July 1915, 10", August 
1915, 1c"; these last two specimens are doubtfully placed under this 
species; they are both incomplete specimens, near if not identical with 
M. macrobrachion. 
This species can always be readily distinguished from other West 
African congeners by the felted fingers; the pubescence is found in very 
young specimens of as little as 58 to 60 mm. in length (vide de Man). 
‘“Malela is about twelve miles up-river from Banana, which hes at 
the mouth of the Congo. These shrimps were caught at low tide with 
fine-meshed nets in the relatively narrow channels that traverse the open 
mud flats between the mangrove swamps such as are common near the 
outer edge of the mangrove belt northwest of Malela in the neighborhood 
of the higher lying savanna.” (H. L.). 
? Macrobrachium sollaudii (de Man) 
Palemon (Eupalemon) sollaudii pz Man, 1912, Rev. Zool. Africaine, I, p. 413, 
and synonymy; 1912, Ann. Soc. Roy. Zool. Malacol. Belgique, XLVI, (1911), p. 
205, Pl. 1, figs. 2-22. ° 
Type locality, River Ottenge near Banzyville, Ubangi district. Known also from 
Cameroon and Spanish Guinea. 
Five incomplete specimens without data, 207, 3°. 
There are three species of Macrobrachium in the Congo region 
having the carpus of the second legs distinctly longer than the palm, and, 
on the basis of the rostral count, I at first thought that these specimens 
represented M. macrobrachion, in spite of the unfelted fingers of the 
largest (79 mm. long) male, but the position of the anterior spines on the 
telson definitely precludes this. In smaller specimens of /.macrobrachion 
the anterior spines are distinctly before the middle of the telson, though 
in larger, full-grown specimens, they may be at about the mid-point; 
in M. sollaudi they are behind the middle. This is decidedly so in the 
four smaller specimens of the lot under discussion, slightly so in the 
largest; moreover, the telson has a stouter form than in young M. 
macrobrachion. The distinctive shape of the rostrum, and the slender- 
ness of the second pair of legs of M. foaz at once keep one from confusing 
them with that species. 
Measurements of the larger male in millimeters: rostrum (without 
tip and reaching about as far forward as the antennal scale) 15, carapace 
22, abdomen and telson 42, telson 10.5 long; left leg of second pair, 
movable finger 11.5, palm 18.3 (8 wide at middle), carpus 21 (2.66 wide 
