BULLER TIS 
OF 
THE AMERICAN MUSEUM OF NATURAL HISTORY 
VoLuME LIII, 1926 
59.53,841 (67.5) 
Article I.—THE MACRURAN, ANOMURAN, AND STOMA- 
TOPOD CRUSTACEANS COLLECTED BY THE 
AMERICAN MUSEUM CONGO EXPEDITION, 
1900 TO L6! 
By Watupo L. Scumirt 
Wirs Frevtp Notes By HERBERT LANG AND JAMES P, CHAPIN? 
Puatses I-IX, Text Ficgurss 1-75 
INTRODUCTION 
As with the brachyuran crustaceans, about a third of the total 
number of decapod crustaceans known from the western coast of Africa,* 
or the faunal area extending from Senegal to Angola, are represented in 
the present collection. However, the very comprehensive series of 
several little-known species has enhanced the value of the material ob- 
tained far above what the mere acquisition of a species-representation 
would have been. 
| Of particular interest is the excellent series of Palemonide, which 
has furnished data making possible a revision of the described species. 
Several forms heretofore considered distinct, having been based on in- 
adequate material, are given what appears to be their true status as 
erowth stages of the species to which they are assigned. So Macro- 
brachium lenzii and M. dux variety congoensis are but M. dux (Lenz), 
and Macrobrachium jamaicense variety herklotsi, a variant of M. vollen- 
hovenit (Herklots). | 
The several varieties of Caridina togoensis prove, in the very large 
series of over 800 specimens obtained, to be founded on variations normal 
une N INNO ctrl RPMs CTU amine ra ren nee aire OBL A ana 
Scientific Results of the American Museum Congo Expedition. General Invertebrate Zoology, 
ales Pies notes are indicated in the text by quotation marks and the collectors’ initials. 
3Rathbun, 1921, Bull. Amer. Mus. Nat. Hist., XLIII, pp. 379-474. 
4Based on Rathbun, 1900, Proc. U. S. Nat. Mus., XXII, pp. 271-316; de Man, 1912, Ann. Soc- 
Roy. Zool. Malacol. Belgique, XLVI, (1911), pp. 197-253; Balss, 1916, 1921, ‘Beitr. Kenntnis Meeres- 
fauna Westafrikas,’ Crust. Decapoda Macrura, and Anomura. 
1 
