DIAGNOSES OF NEW SPECIES 



OF MACRUROUS DECAPOD CRUSTACEA PROM THE 

 „SIBOGA-EXPEDITION" 



BY 



J. G. DE MAN. 



V) 



This paper contains the diagnoses of 29 new Species and of 3 

 new Varieties, all belonging to tiae Family AlpJieidae. All the 

 Alpheidae, collected by this Expedition, have now been worked 

 out: 113 species and 20 varieties, of which 57, respectively 15, 

 proved to be new to science. One new genus, Arelopsis, has been 

 created. The Macrura, collected by the „Siboga-Expedition," are 

 at present at lerseke, but will be transferred to the Zoological 

 Museum of the University of Amsterdam, as soon as they have 

 been worked out. 



1. Alpheus Stanleyi Cout., var. dearmatus n. 



Station 152. Wunoh-bay, N.W. Coast of Waigeu-island. Reef. 

 Station 240. Banda-auchorage. Depth from 9 — 36 M. 



This variety dilïers frora the typical species by the meropodite 

 of 4th legs being quite unarmed at apex, while, according to 



1) The first Part, containing the diagnoses of 28 new Species and of 1 new Variety, 

 was published in 1905 in the „Tijdschrift der Ned. Dierk. Vereen." (2) T. IX, pp. 

 587—614., the second Part with 19 new Species and 1 new Variety in 1907 in the 

 „Notes from the Leyden Museum," Vol. XXIX, pp. 127—147, the third Part with 11 

 new Species and 2 new Varieties in 1908 in the same. Vol. XXX, p. 98 — 112, the 

 fourth Part with 17 new Species and 10 new Varieties in 1909 in the „Tijdschrift der 

 Ned. Dierk. Vereen." (2) T. XI, p. 99—125. 



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