69 



Salmaris Alexiiiidri. Dödkhlkin. 1888. Echinod. von Ceylon. Zool. .lahrb. Svst. III p. H'Ml Tab. 32.7. 33.10. 



— sulcata. Duncan & Sladen. 1888. On the Echinoidea of the Mergiii Archipelago. Journ. Linn. 



Soc. Zool. XXI. p. 317. 



— — Si.uiTEH. 1889. Evertebraten Sammlung Batavia. Natuurk. Tijdschr. Nederl. Indie. 48. 



p. 292. 



— — Bedfokd. 1900. Echinod. from Singapore and Malacca, p. 281. PI. XXII. Fig. 3. 



— uiryiilala, typica. Döderlein. 1902. Echinoidea v. Amboina u. Thursdaj' Isl. (Semon). p. 712. 



Taf. LXII. Fig. 2. 



— — DE Meliere. 1904. Siboga-Echinoidea. p. 83. Taf. XVII. Fig 273. 



The type specimen of this species I have also examined in the Paris- 

 Museum, and as I liave found both pedicellariæ and spines on it, I can positively 

 assert that Döderlein's interpretation of this species is the right one. The charac- 

 ters of tlie test have been so well made out by Döderlein that nothing need be 

 added. Only the pedicellariæ are insufficiently known. 



The globiferous pedicellariæ (PI. VI. Fig. 18) occur only in one, large form 

 with rather elongated blade without lateral teeth; de Meuere has fust mentioned 

 and figured this form of pedicellariæ in this species. He mentions one ..welche 

 merkwürdiger Weise am Ende aller Klappen abgestutzt erschien, ohne dass von 

 einem einfachen Abbrechen der Spitze die Rede war". That must certainly be a 

 not yet fully developed pedicellaria; the endtooth is formed at last, as I have seen 

 beyond doubt in the different stages of development, which may rather easily be 

 found. The tridentate pedicellariæ (PI. VI. Fig. 7, 46, 47) are rather small (ca. 06 mm., 

 head), the valves short, joining only at the point, the blade is narrow, with a few 

 serrations in the edge; the outer edge, where the valves join, forms an obtuse angle 

 with the side edge. The basal part of the valve is very large in proportion to the 

 blade; sometimes there are four valves. The ophicephalous and triphyllous pedi- 

 cellariæ without remarkable features, the meshwork in the blade of the former 

 being, however, less developed than in S. bicolor, and the form a little more elon- 

 gate (PI. VII. Fig. 40). 



The spicules of the tubefeet are very variable in number, sometimes almost 

 none at all, sometimes a great number occurring, especially close under the sucking 

 disk. Also in the globiferous pedicellariæ spicules may occur, as seen by de Meuere. 

 In the buccal membrane there are numerous small plates inside the buccal plates; 

 outside these a few rounded plates may be found in larger specimens. Bihamate 

 spicules are not numerous in the buccal membrane. The gills as in bicolor. The 

 intestine and genital organs, even the stone canal, almost without a single spicule. 

 The genital organs of the common structure, a close aggregation of very irregular, 

 branched tubes. 



Numerous small specimens from between Koh Rin and Clitf Rock, 15 laths.; 

 1 large specimen from Koh Kram, 30 faths. (with ripe eggs; taken the 2. March), 

 and some small specimens from the same locality. Some few small specimens were 

 taken at Koh Chuen, 30 faths., Koh Mesan, 5-9 faths., 20 miles South of Koh Samit, 



