411 



palm is distinctly notched near the articulation of the dactylus and the lobe behind the notch is 

 rather obtuse-, the notch passes on the outer side into a quadrangular depression, that occupies 

 the upjoer third of the outer surface, on the inner in a quite shallow, triangular depression that 

 runs along the upper margin and that almost extends to the carpal articulation. The distal 

 half of the inner surface appears as a quadrangular depression, whereas the proximal half shows 

 a scattered punctation. The lower margin of the palm presents a concave emargination at the 

 base of the immobile finger, this emargination appears on the outer side triangular like in 

 A. parvirosti'is and the truncate, posterior margin of this notch makes nearly a right angle 

 with the lower border; immediately behind this notch one observes on the outer surface a 

 shallow depression that extends to near the upper quadrangular one and that is recognized the 

 best when the chela is looked at . from the under side. Outer surface of palm and fingers 

 sparsely punctate. 



The large chela of the male from Stat. 96 is almost one-third longer than the carapace, 

 it resembles that of the female, but the triangular depression on the inner face of the palm is 

 almost inconspicuous, the inner face appears here somewhat hairy. Unfortunately the small chela 

 of the male is missing. In the small cheliped of the female the infero-external and the infero- 

 internal margin are finely tubercular, the tubercles of the infero-internal margin are a little larger 

 than those of the other and the upper margin is also uneven ; there is no apical tooth at the 

 inner margin and the upper is also unarmed. Chela little more than half as long as the carapace 

 and 4-times as long as the palm is high in the middle, fingers slightly longer than the palm. 



In the right leg of the second pair of the adult female the two first carpal segments 

 are of equal length, the 5''^ just half as long and the chela, the fingers of which are one 

 and a half as long as the palm, appears nearly as long as the 4''^ and the 5* segments taken 

 together; in the other leg the i^' segment is somewhat longer than the 2°'^. 



Ischium of 3'"'^ and 4"^ legs unarmed, meri also unarmed, those of 3''<^ pair 5-times as 

 long as wide; propodus two-thirds the length of the merus, one-sixth longer than the carpus, 

 the proportion being as 20; 17, and the propodus, also 5-times as long as broad, is furnished 

 with 5 or 6 pairs of spinules; dactylus short, almost half as long as the propodus. 



Eggs numerous and small. 



752. Alpheus levmsciilus Dana. 



Alpheits Edivardsii, var. Icviitsciilus J. D. Dana, U.S. Explor. E.xped. Crust. 1S52, p. 543, 

 PI. 34, fig. 3. 



Stat. 250. December 6'j. Kur-island. Reef, i ova-bearing female. 



Alpheus levmsciihis Dana, which was considered by Coutiere as an abnormal form of 

 A. Edwardsii, though it occurs also in the list of species observed by him at Djibouti (Les 

 Alpheidae, Paris, 1899, P- 15 and p. 486), is no doubt a good species, closely approaching 

 to A. Bouvieri A. M.-Edw. and A. Bastardi Cout. 



The specimen from Kur-island is 15 mm. long, unfortunately Dana does not mention 

 the length of his species. The acute rostrum is very short, reaching only to the 2""^ third 



279 



