ALPHEUS PUBESCENS. 



109 



11. Alpheus pubescens, n. sp. 



Station 43. Anchorage off Pulu Sarassa, Postillon- 



islands. Depth up to 30 M. 

 Station 60. Haingsisi, Samau-island, Timor. Depth 

 36 M. 



Station 71. Makassar. Depth up to 32 M. 



Station 77. Lat. 3° 27' S., long. 117° 36' E. Borneo- 

 bank. Depth 59 M. 



Station 162. Between Loslos and Broken-islands, 

 west-coast of Salawatti. Depth 18 M. 



Station 273. Anchorage off Pulu Jedan, East coast 

 of Aru-islands. Depth 13 M. 



A new species of small size of the group „brevirostris'\ 

 the male being 20,5 mm. long, the egg-bearing female 

 18 mm. 



Carapace covered with a close, though short pubes- 

 cence. Rostrum acute, narrow, reaching to the middle 

 of the visible part of 1 st joint of antennular peduncle, 

 rostral carina continued to the middle of the carapace, 

 obtuse in the male, a little sharper in the female, and 

 separated from the rounded, unarmed orbital hoods by 

 narrow grooves. Telson not yet twice as long as broad 

 anteriorly, spinules of upper surface large. 



Second joint of antennular peduncle a little — longer 

 than the visible part of 1 st , third joint three fifths of the 

 2 nd ; stylocerite pointed, reaching to the end of 1 st joint. 

 Carpocerite as long as scaphocerite, a little longer than 

 the antennular peduncle ; scaphocerite 3-times as long as 

 broad, its outer margin concave, terminal spine reaching 

 a little beyond the blade and curved inward. 



Meropodite of both the larger and the smaller chelipede 

 of the male 2 1 / 2 -times as long as broad, upper margin 

 unarmed, infero-internal margin with 4 or 5 small spinules 

 and, at the extremity, with an acute tooth. Larger chela, 

 in the male, rather high, 2,4-times as long as high, com- 

 pressed, with a transverse groove on the flattened upper 



Notes from the Leyden Museum, Vol. XXX. 



