e l Lower spine of basicerite shorter than the supraorbital spines. 



/j Rostrum reaching the middle of 2 nd antennular article, 



visible part of i st article hardly longer than <> nd , ventral 



accessory hook of the dactylus of 3" 1 pair oblique with 



regard to the lower margin Stimpsonii (de Man) 



(J. G. DE Man, in: Archiv fur Naturg. 53. Jahrg. 1888, p. 513, Taf. XXII, Fig. 3). 

 f„ Rostrum a little shorter than i st antennular article, visible 

 part of i st article hardly longer than 2 nd , ventral accessory 

 hook of the dactylus of 3 rd pair perpendicular to the 



lower margin Stimpsonii (de Man) var. Maldivensis Cout. 



(H. Coutikre, Alpheidae Mald. and Laccad. Archip. 1905, p. 878, PI. LXXIII,fig. 16). 

 3 Lower spine of basicerite not shorter than the supra-orbital 

 spines, not yet or hardly reaching to the middle of the 

 visible part of i st antennular article, this visible part almost 

 twice as long as 2 nd article; rostrum usually a little shorter 

 than i st article. Spinules of the upper surface of the telson 

 small, 0,22 mm. long, anterïor pair far behind the middle. 

 Ventral accessory hook of the dactylus of 3 rd pair per- 

 pendicular to the lower margin consobrinus de Man 



c„ Telson with the anterior pair of spinules situated before the middle, 

 rather far remote from the lateral margins. Frontal and antennal 

 region as in Syn. Stimpsonii de Man, but the stylocerite reaches 

 only to the middle of the visible part of i st antennular article. 

 Large chela of the female with the distal lobe on the inner side 

 of the immobile finger not rounded as in Syn. consobrinus, but 



produced into an acute prominent tooth. (Male unknown) . . odontophorus de Man 

 . a„ Merus of the third and the fourth pair of legs unarmed. 



ó l Rostrum reaching just beyond the extremity or almost to the extremity 



of 2 nd antennular article; rostrum carinate, the carina continued 



to quite near the posterior margin of the carapace. 



c x Rostral carina with a notch at the limit between the gastric and 



cardiac regdons. 



Ova 0,9 — 1 mm. long. Proportion between the width of the telson 



at base and the posterior margin 2,2 carinatus (de Man) 



c 2 Rostral carina without a notch, telson at least 2,6-times as wide 

 at base as the posterior margin is broad. 



d x Ova 1,2 mm. long carinatus (de Man) var. binongcensis de Man 



d 2 Ova 0,4 — 0,5 mm. long carinatus (de Man) var. ubianensis de Man 



b„ Rostrum not carinate, very short, a little shorter than the basal 

 antennular article. Lower spine of basicerite not attaining the 



extremity of the frontal spines Albatrossi Cout. 



(H. COUTIÈRE, in: Proc. U.S. National Museum, XXXVI, 1909, p. 89). 



59 



