by T. R. R. Stebbing. 123 
1911, and had probably not seen his figures in the same work, pl. 21, 
fig. 94, 1913. . The imperfection of the single specimen on which 
A. notabilis was founded leaves its separation from de Man’s earlier 
species somewhat doubtful. 
ALPHEUS GRACILIS, Heller. Plate XX. 
1861. Alpheus gracilis, Heller, Sitz. K. Ak. Wiss. Wien, vol. xliv, 
Bp 201, pled, figs, 195 20. 
1811. A. g., de Man, Siboga Exp., Mon. 39a, pp. 341, 342. 
The female specimen here referred to A. gracilis, Heller, has the 
feature on which alone Coutiere establishes var. al/wawdi (Mald. and 
Lace. Archip., vol. ii, pt. 4, p. 882 (1905), namely, that the finger in 
the third, fourth and fifth perzopods is simple, instead of having its 
apex bidentate. But as his only available specimens are said to be 
males without the first pair of perzopods, identification seems too 
indefinite. In var. lwciparensis, de Man (Siboga Exp. Mon. 39a, pp. 
337, 338; 1911; pl. 14, figs. 66, 66a; 1913) the accessory claw or 
tooth appears to be “somewhat smaller than the type,” thus bridging 
the interval towards its disappearance. 
The front of the carapace and the two pairs of antenne are in good 
agreement with de Man’s figures. In the first antenne the thickened 
part of the flagellum has about half a dozen distal joints free. In the 
first perzeopods the smaller chela on the right, though much narrower 
is not very considerably shorter than its companion on the left. The 
delicate second perzeopods have the chela and the divisions of the wrist 
in agreement with the type species. This flexible apparatus is no 
doubt one of the many modifications of a ‘‘cleanser foot” found in 
different groups of Crustacea. The distal margin of the telson is 
convex, the median tooth described by Heller being due to an error 
of observation, as explained by de Man. Such an error was easy to 
make, since between the two pairs of spines at the angles there is a 
dense fringe of about twenty long plumose sete. The length of the 
specimen obtained by Mr. Bell Marley at Isezela was about 30 mm., 
the ova small, the colouring ‘“‘a deep white line down back, with 
chocolate-brown each side, claw lighter, tail a mixture of brown and 
yellow.” 
ALPHEUS LOTTINI, Guérin. 
1837. Alpheus lottini, Guérin, Voy. de la Coquille, vol. ii, Crust., pl. 
3, fig. 3, 1838, A. lottinit, p. 38. 
1837. A. lothinii, Milne Edwards, Hist, Nat. Crust., vol. ii, p. 353. 
