30 Bulletin American Museum of Natural History [Vol. LIII 
The body from tip of rostrum to end of telson ranges in length from 
55 mm. for the largest to 37 mm. for the smallest, a male. The following 
tabulation gives the measurements of the largest female, and of the 
largest male having both second legs: 
Of largest specimen, an | Of the largest male of 
Measurements in millimeters | ovigerous female from | the same lot, with both 
Stanleyville April, 1915 second legs 
(No. 3381) 
Length of rostrum, 5.,focuvaens «5. 1b.b 
Length of carapace... isce. 2, 6. 12.5 10 
Second Pair of Legs Lft. Ai, Lft. Ri. 
Length of movable finger!..... 3.5 3.5 4.6 4.5 
Length or paline.canan. sateen f 5.6 5.6 4.3 4.2 
Wait aie Tanto. gh aielsse sisal 1 1 9 9 
Heneth el Carptis.. 4 2k. 9 9 8 8 
WV GG ID ge tt een sey eta raisers a. til 1.1 75 15 
~ ueneth Of Meruss.. fe. 4 dP. 6.6 6.6 6 6 
Length of ischitum............ 7 7 6.3 6.3 
eeneth, of telsonis.d..6.225)2 5 30% eae 7 
TeenethOf DOW ic: .iwes sassy ees : 55 453 
Macrobrachium luje (de Man) 
Plates II; III; IV, Figure 1 
Palemon (Eupalemon) luje pp Man, 1912, Rev. Zool. Africaine, I, p. 415; 
1912, Ann. Soc. Roy. Zool. Malacol. Belgique, XLVI, (1911), p. 215, Pl. 1, figs. 3, 
3a, 3b, Pl. 111, figs. 3c, 3d, 3e. 
Previously known only from the type lot of six malesfrom Kondue, near Lusambo, 
on the Sankuru River. 
Stanleyville, April 1915, 14 (8 immature), 82 (8 ovigerous), 1 
juv. Aba River at Aba, December 1911, 1c”. 
The three localities from which this species is now known are rather 
widely separated from one another on three distinct branches of the 
Congo; Aba near the head-waters of the Ubangi-Uele-Dungu-Aba 
River branch; Stanleyville on the major or middle branch, the Congo 
proper; and Kondue, near Lusambo, on the Sankuru-Kasai branch. 
The rostrum does not always ‘distinctly’? surpass the antennal 
scale, as described by de Man; true, it is rarely shorter than the blade, 
1Measured from the articulation to tip; palm measured back from same point. 
*Measured on lateral, upper face; width of other joints measured as viewed when measuring 
length of upper margin. 
3Rostrum broken off, length measured from distal margin of antennal scale. 
& 
