105 



strongly arcuate, being half as wide as the width at the base. 



Second antenuular article slender, almost twice as long as the 

 visible part of the Ist and 3 times longer than the 3rd joint. 

 Carpocerite hardly reaching to the extremity of median antennular 

 article ; scaphocerite slender, a little shorter than antennular peduncle, 

 terminal spine as in A. macrosceles, hardly exceeding the obtuse 

 extremity of the scale. 



Thoracic legs as in A. macrosceles. Meropodite of larger chelipede 

 of the male 6-times longer than wide, without a spine near the far 

 end of upper margin; chela slender, twice as long as the mero- 

 podite and 6-times longer than high, palm slightly compressed, 

 upper and lower border entire; fingers slender, their length a little 

 more than one third that of the chela and three fifths of the palm. 



Small chela of the male 9-times longer than high, palm a 

 little longer than the fingers that are more slender than those of 

 the large chela and the dactylus of which is Balaeniceps-shsLTped. 

 The slender fingers of the small chela of the female are slightly 

 longer than the palm and simple. 



Second segment of carpus of 2nd legs a little longer than 

 Ist, 3rd — 5th segments subequal, the 4th usually slightly longer 

 than the two others. 



Meropodites of 3rd and 4th legs unarmed, those of 3rd pair 

 10-times longer than wide; propodite tapering, its length two 

 thirds that of the meropodite, dactylus lanceolate, depressed, its 

 length a little more than one third that of the propodite. 



Length of adult male 28 m.m., of ovigerous female 23 — 25 ra.m. 



7. Alpheus pareuchirus Cout., var. Leucothea n. 



Station 2. Lat. T 25' S., long. 113° 16' E. Madura-Strait. 

 Depth 56 M. 



Station 49a. Lat. 8° 23'. 5 S., long. 119° 4'. 6 E. Sapeh-Strait. 

 Depth 70 M. 

 • Station 86. Anchorage off Dongala, Palos-bay, Celebes. Depth 36 M. 

 Station 96. South-east side of Pearl-bauk. Sulu-archipelago. 

 Depth 15 M. 



