364 Dr. W. T. Caiman on 



b. Occludent margin of scutum convex, sides 

 of carina widening below. 



a. Basal width of capitulum little less 



than one-third of its length. 

 a. Basal margin of carina, seen from the 



side, shorter than that of scutum . . M. subcarinatum, 

 j3. Basal margin of carina, seen from the [Pilsbry. 



side, about as long as that of 



scutum. [A pair of long filamen- 

 tary appendages placed far forward 



on dorsal surface of prosoma, and a 



pair of short ones close to base of 



first cirri.] M. orientale, sp. n. 



b. Basal width of capitulum not more than 



one-fourth of its length. 

 a. Numerous filamentary appendages on 



dorsal surface of prosoma M. carinatwn (Hoek). 



/3. A pair of uncinate processes on dorsal 



surface of prosoma M. hamatum, sp. n. 



Megalasma (Glyptelasma) gigas (Annandale). 



Pcecilasma (Glyptelasma) oigas, Annandale, Journ. Straits Branch Roy. 

 Asiatic Soc. no. 74, 1916, p. 299, pi. iv. fig. 4, pi. v. figs. 10-14, 

 pi. vi. figs. 7, 8. 



Localities.— Lat. 8° 46' S., long. 114° 44' E., 400 fath. 

 2 s i ^ a c i in c li s 



Lat. 11° 0' S., long. 121° 0' E., 500 fath. About 15 

 specimens. 



Lat. 11° 0' S., long. 121° 30' E., 500 fath. 8 specimens. 



Lat. 11° 0' S., long. 122° 0' E., 600 fath. 4 specimens. 



All specimens taken by C./S. ' Patrol' from Java-Australia 

 cables. 



Measurements. — Largest specimen, length of capitulum 

 30 mm., breadth 15 mm., length of peduncle 36 mm. In 

 another specimen, length of capitulum 25 mm., of peduncle 

 43 mm. 



Remarks. — The specimens agree in general with Annan- 

 dale's description and figures, the most conspicuous difference 

 being that the peduncle is frequently longer — sometimes 

 much longer — than the capitulum. The cuticle may be 

 much paler, sometimes nearly colourless. I can find no trace 

 of a tooth at the basal occludent angle of the tergum on 

 either side. There is some variation in the depth of the sides 

 of the carina. The peduncle shows, more or less distinctly, 

 a longitudinal keel on the carinal side. There are no fila- 

 mentary appendages. 



It seems probable that Annandale's species is related to 



