APPENDIX. 



Nemopsis dofleini Maas. 



\riiitif>sis Jofteini, MAAS, 1909, AWiandl. Akad. \Vis-en., Munchen, Suppl. Bd. i, Abhandl. 8, p. 1 1, taf. i, fign. 4 und 5. 

 Favonia nippoaica, KISHINOI vt, 1910, Journal College of Sci., Tokyo, vol. 27, art. 9. p. 26, plait 5, fig. 25. 

 (?) FiK-ytiii iulxttii, Ki-iiiN'ii \>, Mil/., p. 26, platt 5, fig. 26 (contracted specimen from Korsakoff). 



Ir is probable that \,-ni(j/)sis ilnfirini Maas is identical with l-',n-nni<i ntpponica Kishinouye 

 and that the pair of small median tentacles of each perradial cluster was lost in the 9 preserved 

 specimens studied In Maas*- These are very brittle and are often lost in large specimens of 

 the American Nemopsis, edffecially after preservation in formalin. Kishinouye rinds that the 

 marginal tentacles arise in t\vo rows from the "epaulets," whereas Maas finds them in a single, 

 closely crowded row. The appearance of two rows is often due to contraction or to crowd- 

 ing. Bearing these differences in mind, I present the descriptions of both authors in order 

 that they may be compared in detail. 



Size in mm. 

 Shape of brll. 



Shape of tentacular ep.iulet 

 from which each IM 



ni.irejn.il trnt.i' !r .IMM-S. 



Number of tentacle;- in each 

 perradial marginal <:lu ter. 



Number of dichotomous 

 branchings of the oral tenta- 

 cles. 



Size and shape of gonads. 



Color. 



Where found. 



Nemopsis dofleini. 



20 to 22 high, 12 to 15 wide. 



4- ided. prismatic with flatly rounded apex and 

 thick walls. 



Cleft in the middle. The two halves wing- 

 shaped. 



40 to 60, simple, tapering, set in one row. 'I rn- 

 i.ules shorter than bell-height. No median 

 < LavatC pair of tentacles observed. Ocelli at 

 the lent.ule bases. 



5 t 7- 



In the form of a double fold along the radial- 

 canals almost reaching the ring-canal. A per- 

 radial separation between each half of each 

 gonad. 



Stomach, gonads, and tentacle-bulbs yellowish, 

 ocelli dark brown. 



Bay of Tokyo, Japan. 



Nemopsis "nipponica." 



17 high, 15 wide. 

 As in N. dofletni. 



As in N. dofleini. 



About 50 in two rou s. A median pair of small 

 il.iv.it,- tent.u-les. ( Helli at tentacle bases. 



About 10 tunes. 



As in N. dofleini but shorter, being, however, 

 more than half as long as radial-canals. 



Tentacle-bulbs and lips orange, ocelli brown. 

 Male- gonads bluish, female pale yellowish. 



Bays of Tokyo and Mikawa, very abundant in 

 spring. 



Willsia pacifica Maas. 



ll'illia paeifca, MAAS 1909, Abhandl. Akad. \Vissen., Munchen, Suppl. Bd. i, Abhandl. 8, p. 17, taf. 3, fig. 16. 



Bell flat, 2 to { mm. high, 5 to " mm. wide; 6 regularly spaced radial-canals arise from 

 the stomach and branch so that about 6X18 terminal canals reach the bell-margin. Manu- 

 brium flat, 6-sided, with <i complexly-folded lips. 96 to 108 tentacles as numerous as the 

 terminal branches of the radial-canals. 96 to 108 short, narrow nettling streaks upon the 

 exumhrella, alternating with the tentacles. No ocelli. Ring-canal rudimentary. Color (?) 

 Coast of Japan in September. One specimen. 



Polyorchis karafutoensis Kishinouye. 

 Polvorchis kara/ulornsis, KISHINOUYF:, 1910, Journal College of Sci., t"niier-it\ T!.vo. vol. 27, art. 9, p. 30, plate 5, fig. 31. 



This medusa differs fmm /Vy/'v/n-f pcniciHuta in its greater size, being 60 mm. high and 



50 mm. wide. Also iis gonads are dichotomously branched, main of the marginal tentacles 

 are forked, and the nn-canal gives orr centripetal branches. 



There are about 40 gonads, 10 on each radial-canal, and these are longer than the manu- 

 brium, which latter is of the size and shape seen in P. penicillata. There are about 120 marginal 



