208 



bears i6 rather short spinules, that are 0,2 mm. long, on the outer side of the posterior margin, 

 while, along the distal third of the joint, each spinule is accompanied by another on the inner 

 side of the margin. The ventral hook of the dactylus is broken off and the other leg is missing. 

 These legs are very setose. 



The telson shows also the same measurements as the female from Muaras-reef. The 

 length equals 3,78-times the width of the posterior margin and the latter measures one-third 

 the greatest width. The spinules of the upper surface are 0,26 mm. long, proportion between 

 the length of the telson and the distance of the anterior pair from the posterior margin 2,7, 

 proportion between the distances of both pairs from the posterior margin 1,73. 



Remarks. The form which was referred by Schenkel to a variety of Syji. Stimpsonii 

 (in: Beitrag zur Kenntniss der Dekapodenfauna von Celebes, 1902, p. 567, PI. XIII, fig. 22a — r), 

 seems really to belong to this species and not to Sym. consobrinus^ because the terminal spine 

 of the scaphocerite hardly reaches beyond the blade and because it is curved inward. 



Further researches must decide whether Syii. consobrimis and Syn. Stimpsonii are indeed 

 different species or whether Syn. Stimpsonii is a much variable form as regards the terminal 

 spine of the scaphocerite extending more or less far beyond the blade, as regards the length 

 of the visible part of first antennular article, as regards the length of the lower spine of the 

 basicerite in proportion to the orbital spines, as regards the shape of the 3''^ — 5''^ legs etc. 



f 3. Synalpheiis odontophorus de Man. 



J. G. DE Man, in: Tijdschr. d. Ned. Dierk. Vereen. (2) Dl. XI, 1909, p. 113. 



Stat. 65''. May 6. Near Tanah Djampeah. From 400 m. upward to 120 m. Pale, grey mud, 

 changing during haul into coral bottom, i egg-bearing female. 



Stat. 260. December 16 and 18. 5° 36^5 S., 132° 55'. 2 E. — 2,3 miles N. 63° W. from the 

 North point of Nuhu Jaan, Kei-islands. 90 m. Sand, coral and shells, i egg- 

 bearing female. 



Stat. 289. January 20. 9°o'.3 S., I26°24'.5E. 112 m. Mud, sand and shells, i egg-bearing female. 



A new species of small size, characterized by the inner, upper side of the immobile 

 finger of the large chela being armed with a characteristic strong tooth. Frontal 

 region prominent as in the other species of this group, rostrum acute, one-sixth, one-seventh 

 or even still less, longer than broad at its base and reaching to the middle or to the distal 

 third or fourth part of 2"<^ antennular article; rostral carina prominent, though rather obtuse, 

 and separated by rather deep grooves from the orbits to the base of which it reaches; length 

 of the rostral carina two-fifths the length of the carapace, rostrum included. The orbital spines 

 that project, like the rostrum, straight forward, are short and measure only one-fourth the 

 length of the rostrum ; they are sHghtly directed outward. 



First abdominal pleura truncate, second and third rounded, fourth and fifth subacute, sixth 

 acute. In the specimens from the Stations 260 and 289 the telson is 4,5-times, in that from 

 Stat. 65a 4-times as long as the posterior margin is broad and in all the specimens the greatest 

 width anteriorly is 3-times as broad as the posterior margin, the lateral margins converging 

 rather strongly; the outer angles of the posterior margin are acute, though not prominent and 



76 



