STARFISHES OF THE PHILIPPINE SEAS. 303 



lacking there are 2 series of granules, or sometimes 2.5. In L. actino- 

 metra the pedicellariae are much smaller, and usually 2 or 3 to a plate, 

 the jaws being much less than half the length of the furrow spinelets, 

 but in L. penichra^ despite its smaller size, the pedicellariae are 

 actually larger, with jaws nearly or quite as long as the furrow 

 spinelets. 



Mouth plates with 7 or 8 four-sided, beveled, chisel-shaped furrow 

 spines, becoming heavier and prismatic at inner end of series, and 

 about 8 granules following the other 2 sides. 



Madreporic body pentagonal, surrounded by 5 plates and situated 

 one-third distance from center to marginal plates. 



Gonads situated as in L. actinonietra. 



Type.— C^t. No. 37004, U.S.N.M. 



Type-locality. — Station 5528, between Siquijor and Bohol Islands, 

 439 fathoms, globigerina ooze, bottom temperature 53.3° F. 



Distribution. — Mindoro to Mindanao, 283 to 439 fathoms, globi- 

 gerina ooze and mud, temperature range 53° to 53.3° F. 



Specimens examined. — In addition to the type, 13 from the follow- 

 ing stations : 



Station 5123, east coast of Mindoro, 283 fathoms, green mud; 1 

 specimen. 



Station 5388, between Burias and Luzon, 226 fathoms, soft green 

 mud, bottom temperature 51.4° F. ; 11 specimens (1 with 4 rays). 



Station 5510, Iligan Bay, north coast of Mindanao, 423 fathoms, 

 gray mud, fine sand, bottom temperature 53° F. ; 1 specimen. 



Remarks. — It is not possible, with the limited amount of material, 

 to decide whether this form is a distinct species or a deep-water race 

 of L. actinometra. The differences between the specimens have been 

 indicated in the diagnosis and description. 



This species greatly resembles a slender-armed Nymphaster., with- 

 out granules on the surface of the plates. The " mimicry " goes even 

 1,0 the characteristic angular margin of the adambulacral plates, with 

 the angular furrow series separating consecutive pairs of tube feet, 

 and to the form of the abactinal, marginal, and actinal intermediate 

 plates. 



Genus ICONASTER Sladen. 



Iconaster Sladen, 1889, p. 261. Type, Astrogonium longimanum Mobius. 



ICONASTER LONGIMANUS (MBbius). 



Plate 77, fig. 2; plate 83, fig. 5; plate 93, fig. 2, 2a; plate 104, fig. 3. 



Astrogonium longwuinum McJbius, 1850, p. 7. pi. 1, figs. 5, G. 

 Iconaster longimanus Sladen, 1889, p. 2G1. 



Notes on Philippine specimen. — R=:40 mm., r=12 mm., R=3.3r. 

 The specimen is immature, since the gonads have not yet appeared. 

 The abactinal plates are dark brown, bordered by lighter granules, 

 the marginal granules on the radial areas being ivory white. The 



