l8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. OO 



ments are slightly broader than long; the cirri are moderately 

 stout ; there are no dorsal spines ; the dorsal surface of the short distal 

 segments is convex; the antepenultimate has a small tubercle which 

 quickly becomes obsolete on the one or two preceding ; P D is 28 mm. 

 long with thirty-three or thirty-four segments, very stout basally, 

 tapering evenly to a delicate tip; the earlier segments are twice as 

 broad as long, the following gradually increasing in length and 

 becoming about as long as broad on the fourteenth, and twice as long 

 as broad on the small terminal segments ; the segments in the middle 

 half of the pinnule have the distal dorsal edge slightly swollen and 

 prominent ; P P is 26 mm. long with thirty-three segments, similar in 

 every way to P D ; P x is 18 mm. long with twenty-five segments, 

 similar to the preceding but proportionately smaller ; the cirri, centro- 

 dorsal and division series are pinkish flesh color ; the arms are slaty ; 

 the proximal pinnules and the outer portion of the middle and outer 

 pinnules are pinkish. 



2. Isabcla, Basilan, Province of Mindanao; Dr. H. Hallier; Jan- 

 uary 22, 1904.- — One broken specimen with forty arms, and cirri 

 32 mm. long with 32 segments of which the terminal fifteen have a 

 minute submedian tubercle which increases in size distally ; the distal 

 edges of the segments of the proximal pinnules, which are large and 

 very stout, are everted but not spinous; the IIBr series are 4(3 + 4) ; 

 the IIIBr series are 4(3-1-4) externally and 2 internally, or all 

 4(3 + 4) 5 the following division series, when present, are 4(3 + 4). 



3. Ekalin, St. Matthias Island; Dr. G. Duncker. — One fragmentary 

 specimen ; the cirri and lower pinnules are very slightly stouter than 

 in the preceding, the segments of the latter with less prominent distal 

 ends. 



4. Pitilu, Admiralty Islands; Dr. G. Duncker. — Three fine speci- 

 mens with thirty-six, forty-four and forty-seven arms 130 mm. long. 



HIMEROMETRA, Sp. 



Antedon kraepelini 1890. Hartlaub, Nadir. Ges. Gottingen, Mai, 1890, p. 

 183 (1). — 1891. Nova Acta Acad. German., vol. 58, No. 1, p. 22, pi. 2, 

 % 15 (1). 



I. Akyab, Arrakan Coast, Burma. — This appears to be a small 

 specimen of H. robustipinna with which it agrees in the absence of a 

 thickening or eversion of the distal edges of the segments of the 

 enlarged proximal pinnules. The lack of the pinnule tips and of the 

 cirri prevent accurate determination. 



