ii ..ii.i\ 01 MOBXU r\i iiic \m> ah. i M i.s'i WA.TMBB m-iikk ll'.t 



Intermarginal channel well marked with ■ series of single papulae, [nfero- 

 marginaJ spineleta two, the upper elender, subequal to or a little longer than the supero- 

 marginal, the lower 50 to 100 per cent longer, and much stouter, blunt. First three 

 to five, with one Bpinelet. a • ties of similar aotinal ipinee extendi one half 



to three-fifths R. There are five fairly regular longi i Lateral and actinal sp 

 twi> Buperomarginal, two inferomarginal, one actinal. 



adambulaora] armature: One Bpinelel on firsl three or four plates, then two 

 Bpinelets to a plate for a varying number; then alternately one and two, fairly regu- 

 larly Some specimens have diplacanthid plates extending to middle of ray or even 

 farther. The Bpinelets are slender, terete, slightly clavate, round-tipped, a little 

 unaller than the actinals. The furrow Bpinelel is usually slightly Blenderer than the 

 outer. First pair of adambulacrals in contact interradially and sometimes inner 

 corner of second pair in contact. 



Mouth plates (pi. 45, fig. 3c) with the usual three spinelets The inner of the 

 two actinostomial Bpinelets usually equals tin- plate in length, while the suboral is 

 appreciably longer, 



Cro on ed pedioellariae (pi. 46, fig 2d), distributed ii- in /. aequalis, are nol i 

 oially abundant, there being one t" ax around each abactinal >i>irn- bul attached to 

 the plate In alcoholic specimens in which the Bkin is somewhal BwoUen they appear 

 nearly as t hick as the Bpinelets, bul shorter. There is usually one on some examples 

 one to three) on each adambulaora] spinelet; lacking on some Bpinelets, 



The extreme lateral teeth of lip are qo! enlarged on miter side of jaw; length, 

 18 to 0.19 mm. Compare with L. aequalis (pi. H and /.. hexaetia f. aea 



Cp] II. Gg. ! 



Straighl pedicellariae mure elliptical, Less triangular in contour and relatively 

 larger than in /. aequalia and /.. hexaetis. I'l 45, figs 36.) They are about 



ii i linn long and are found \ ery sparingly in the intermarginal channel, in the actinal 

 interradial channel, on proximal adambulacral Bpinea and oral spine-, and occasionally 

 on proximal inferomarginal and actinal plate-, while smaller ones are found along 

 the furrow face <if the adambulaora] plates. 



Madrcporic bodj small, situated at middle of r and Burrounded by a circle of 

 Bpinelets, Striae few, relativel] coai i 



Color in lif<': Mottled olive green and pale straw color; carmine and pale straw- 

 color; blotched with purplish red on a lighter ground. 



.1 1 otomieal notes. The skeleton (pi, \~>. u<j. 3d) in addition to our series of rather 

 small 4-lobed carina] and on either side two Beriee of larger 4-lobed marginals, con- 

 in the adult of twice i« I dorsolaterals and on proximal part of raj 



twice twt of actinals. The marginals are the largest plate-, and the Bup< 



marginals have a prominent descending lobe The inner row of actinals are always 

 inconspicuous since the; do nol carry spines 



Variations. This -pen- is lees variable than /. aequalis. The rays are i 

 short and stout as in some (bul not alh examples of /. aeqvalis f nana The) vary 



in the degn f slenderneeB, A- a rule in large specimens R i- about 5 r The skeletal 



meshes varj from being -mailer than the plate, to appreciably arger In the tit>t 

 the skeleton appear- to he close-knit ; in the latter decidedly open The length 



of the a had in al spmelet s varies Short --pined specimens are often difficult to -e pa rat-' 



