The female from Stat. 99 is 1 1 mm. long, the other 12 mm., the ova-bearing specimens, 

 however, attain the length of 15 mm. As regards the rostrum, the orbital spines, the anten- 

 nular and antennal peduncles and the scaphocerite, these specimens resemble the typical form 

 (H. CouTiERE, Alpheidae Maid, and Laccad. Archip. 1905, PI. LXXIV, fig. 18). The female 

 from Stat. 99 has still the small cheliped. IVIerus 1,75 mm. long, measured along the upper 

 border, which is unarmed at the distal end, 0,37 mm. broad in the middle, proportion 4,9; 

 there is a small spiniform seta at the distal end of the upper border of the ischium and a 

 somewhat longer spine occurs at the distal end of the lower border of this joint ; infero-internal 

 margin of the merus with 4 small movable spinules, alternating with setae, and with an acute 

 tooth at the distal extremity. Chela 2,45 mm. long (palm 1,4 mm., fingers 1,05 mm.), palm 

 0,46 mm. high, the [jalm being 3-times as long as high (according to Coutiere in the typical 

 form 2,7-times); the upper border of the palm is slightly emarginate, just behind the articula- 

 tion of the dactylus, and ends distally in a tooth. F"our or five long hairs are implanted on 

 the upper border of the palm, similar long hairs though also shorter ones occur on the fingers. 



In one female from Stat. 144 the carpal segments of the right 2"'' leg are i,iS mm., 

 0,6 mm., 0,38 mm., 0,56 mm. and 0,64 mm. long, chela 0,86 mm. (palm 0,36 mm., fingers 

 0,5 mm.); the fourth segment appears still a little shorter than the 2'"'. The left leg is 

 wanting and the other female has lost them also. 



In the female from Stat. 99 the relative measurements of the 3'''^ legs are: merus 1,58, 

 carpus I, propodus 1,44; merus 6,6-times as long as broad, carpus 5,5-times as long as thick 

 distally, propodus 9-times as long as broad, furnished with 8 spinules, each of which is accom- 

 panied by a smaller one. The dactylus, which is 5,6-times as long as broad at its base, 

 measures almost one-third the length of the propodus, the latter being 1,44 mm. long, 

 the dactylus 0,45 mm. 



In the female from Stat. 144 the relative measurements of the 3''^ pair are e.xactly the 

 same as in the female from Stat. 99, the merus, however, is 7,1-times as long as broad, the 

 carpus 5,6-times, the propodus 9,4-times, but the propodus bears also 8 pairs of spinules ; 

 dactylus 5-times as long as broad, appearing as long in proportion to the propodus as in 

 the other female. 



24. AlpJieiis Hailstoiici Cout. var. 



Stat. 144. August 7/9. Anchorage north of Salomakiee-(Damar)-island. 45 m. Coral bottom 

 and Lithothamnion. i ova-bearing female. 



This specimen, long 14 mm., fully agrees, as regards the relative measurements of the 

 2"*^ and 3'''' legs with the variety laetabilis, but differs from it by the dactyli of the three 

 posterior legs presenting no trace of an accessory claw on their posterior margin! This 

 female forms therefore a transition to the typical species and to the variety assi;nula7is. 



The rostrum extends until the distal third of the visible part of basal antennular article, 

 the orbital spines that reach a little beyond the middle of the rostrum, are slightly turned 

 inward. Second antennular article a little more than twice as lonsf as thick, 0,8 mm. lone, 



SIUOGA-EXPEDITIE XXXIX rt*. = 



