1S8 At'TlNLi: OF Al.liATlJOSS FAl'LOlJATIONS M'MUKKICH. 



rows, and jiiviiig" tlie-t'oluinn almost a i»;ranular ai^poaranco in some 

 spociinons. Tlioy IxH'onio smaller as they approai-h tlu' limbns, and 

 lado out a short distance above it. A dark brown enticlo covers this 

 portion of the colnnni. Just below the capitnlnm, and Ibrminj*' there- 

 loic the summit of the contracted column, are two circles of very 

 pronnnent tubercles, tii)iK'(l with blunt chitinous ]>oints. There are 

 twcnty-foyr such tubercles, arranged in two horizontal rows of twelve 

 each, so that there may bcsuitl to be t\\('l\(> h)iij^itndinal rows of these 

 larjic tubercles, each row consist iiiu' of two tubercles, lietweeu each 

 pair of lonj^itndinal rows there is usually to b(> s(>en a row of small 

 tubercles, so that there ar«' in all twenty tour loujiitudinal rows of 

 tubercles, twelve of them beiu^' very large and promiiuMit, and twelve 

 small and ahuost hidden by the lari^er »)nes. 'Vhv cai)itnlum is essen- 

 tially tlio sanu* as that of .1. Wrrillii, ])()ssessiu.ii- forty-eight longitudi- 

 nal ridges which run to the bases of the tt'utacles. It is destitute of 

 cuticle and tubercles. The sphincter (IM. xxxi, I'ig. 1)1) resembles that 

 of .1. Vcrrillii closely. It is tolerably wide, but not thick, beiug only 

 slightly thicker iu its np])(>r i)art than it is lower down. In section it 

 appears a-s a luunber (tf luore (u- less circular ca\ities, traversed by del- 

 icate partititms, Avhich support the ninscle cells. In the lower part 

 (PI. XXXT, Fig. 1)5) there is only one such cavity to the thickness of the 

 muscle, but above (PI. xxxi, I'ig. !U5) there may be three or four, or even 

 more, since the cavities tend to become snudler iu the upjjcr i)art. 

 Throughout its Avhole width the muscle is se]>arated by a broad band of 

 nu\soghea from the endodermal snrfaceof the column, lying nearly mid- 

 way between the two surfaces. 



The tentacles are ninety-six in nund)er, as calculated from the 

 nund)er counted iu a sextant. They are decidedly eiitacma'ous, and 

 are arranged api)arently iu four cv«'les, it being ditlicult to distinguish 

 those of the lirst two cycles by their i)osition. I'^ach tentacle possesses 

 at its base a bulbcms eidargeujent similar to that described for ^l. 

 Vcrrillii. The longitudinal nniscles of the tentacles are weak. The 

 tentacles, disc, and stomatoda'um seem to have been of a salmon or 

 flesh- color. 



The stomatodienm is i)rovided with two rather shallow siphouogly- 

 phes. 



The mesenteries are arranged in three cycles, there being only 

 twenty four pairs in the specimen examined. Probably, however, a 

 fourth cycle is ])resent in larger si)ecimcus. since the number of 

 tentacles wonhl lead one to exix'ct forty-eight ])aiis of nu\scnteries. 

 The nu\senteries oltlic first cyeh' arc ])crfcct and nongouopli(»ric, those of 

 the other two cycles ln-ing imi)erfcct and at the s:ime tiuu> gonoi)h(U'ic. 

 The longitudinal musculature is well deveIoi»ed (PI. xxxi, Pig. J)7), there 

 beiug a strong nniscle |)ciinon situated near the outer ctlge of the 

 mest'uteiy and h:iviug :i sonu'\\h:it abrujit iuuei- vi]<Xi\ bey<»ud which, 

 howe\er, are a uuudH'r of niutli lower muscle proces^^es gradually di- 



