ALPHEUS 1ACETUS. 



101 



Smaller chela 5-times as long as high, fingers just as long 

 as the palm, which is nearly cylindrical, smooth and entire. 



Carpus of 2 nd legs with the 2 nd joint half as long as 

 the 1 st , the 5 th slightly longer than the 2 nd . Meropodite 

 of 3 rd legs unarmed, 5-times as long as broad, carpus half 

 as long; propodite 1,6-times as long as the carpus, dac- 

 tylus hardly one third of the propodite, with no accessory 

 claw on the posterior border, but with a minute tooth at 

 the distal third of the anterior, contiguous to it. 



Length 18 mm. 



4. Alpheus consobrinus, n. sp. 



Station 78. Lumu-Lumu-shoal, Borneo-bank. Reef. 

 Station 96. South-east side of Pearl-bank, Sulu-archi- 



pelago. Depth 15 M. 

 Station 115. East side of Pajunga-island, Kwandang- 



bay. Reef-exploration. 

 Station 125. Anchorage off Sawan, Siau-island. Depth 



27 M. Reef- exploration. 

 Station 213. Saleyer-anchorage and Surroundings. 



Depth up to 36 M. 

 Station 299. Lat. 10°52'.4 S., long. 123°l'.l E. 



Boeka- or Cyrus-bay, South coast of Rotti-island. 



Depth up to 36 M. 

 Station 315. Anchorage east of Sailus Besar, Pater- 

 noster-islands. Depth up to 36 M. 



A new species of the group „crinitus" Cout. s. s., closely 

 related to A. Bucephalus Cout. and A. clypeatus Cout. 



Rostrum, frontal margin of the carapace, antennular 

 and antennal peduncles as in A. bucephalus, but the basi- 

 cerite is armed with a small, infero-lateral spinule and 

 scaphocerite slightly longer than carpocerite. Telson a little 

 narrower posteriorly than in A. bucephalus, its length being 

 in proportion to the breadth of posterior margin as 9 : 3%, 

 in A. bucephalus as 9:4. 



Meropodite of larger chelipede of the male one and a 



Notes from the Ley den Museum, Vol. XXX. 



