331 







c„ Dactyli of three posterior legs simple. 



flfj First carpal article of 2°"^ legs almost twice or somewhat more 



than twice as long as 2"<^. 



e^ Second article of antennular peduncle distinctly longer than 



the visible part of i*'. 



/j Dactylus of smaller chela of the male hairy at the inner 



side, but presenting no hairy crest. Merus of 3''^ legs 3- 



times as long as wide in the middle. Fingers of the chelae 



of 2"'^ legs longer than the palm Hippotho'c de Man 



f„ Dactyli of smaller chela of the male with a hairy crest at 

 the inner side. Merus of 3''<i legs 4 — 4,5-times as long 



as wide in the middle euchirus Dana 



e„ Second article of antennular peduncle a little shorter than the 

 visible part of i^^. Larger chela with the notches rather 



small and short etichiroides Nob. 



(G. NOBILI, Ricerche sui Crostacei della Polinesia, 1907, p. 356, PI. I, fig. 6). 



d„ First carpal article of 2"'' legs as long or a little shorter than 2°'^. 



^, Merus of 3'^'^' legs 2,7-times as long as wide in the middle. 

 Merus of both chelipeds unarmed at the apex of infero- 

 internal margin. Dactylus of the small chela of the male 

 sharply carinate above, very hairy at the inner side, but 

 with no hairy crest ftmaftitensis Borr. 



e„ Merus of -^^^ legs 4-times as long as wide. Merus of larger 

 cheliped with a spine at the apex of infero-internal margin. 

 Dactylus of the small chela of the male with a hairy crest 

 on the inner side cdamensis de Man 



^3 Merus of 3"''^ legs 6-cimes as long as wide. Larger chela about 

 3-times longer than high, this chela as also the smaller chela 

 and the 2^^ legs nearly as in A. pareuchirits Cout. . . Perezi Cout. 

 (H. COUTIERE, in: Bull. Soc. Philom. Paris, 1908, p. 22). 



L Megacheks group. 



f I. Alphetcs Hailstonei Cout. var. assiiniilans de Man. 



J. G. DE M.\N, in: Notes from the Leyden Museum, Vol. XXX, 1908, p. 99. 



Stat. 260. December 16 and 18. S°36'.5S., I32°55'.2E. 2,3 miles N., 63° W. from the North 



point of Nuhu Jaan, Kei-islands. 90 m. Sand, coral and shells. 2 males and 



I egg-bearing female. 

 Stat. 282. January 15/17. 8°25'.2S., 127° 184 E. Anchorage between Nusa Besi and the N.E.- 



point of Timor. 27 — 54 m. Sand, coral and Lithothamnion. i young specimen. 

 Stat. 305. February 8. Mid-channel in Solor-strait off Kampong Menanga. 113 m. Bottom 



stony. I adult, egg-bearing female and 12 younger specimens. 



These specimens show some slight differences from the typical form of A. Hailstonei 



199 



