The specimens here described were found with L. circulare, from which they are easily 

 distinguished by the velate expansion of the adult, or by the expanded junction of the stalk 

 and calyx, due to the development of the velum, in immature individuals (fig. 9). The velum 

 is not unlike the similar expansion in L. annelidicola Van Ben. and Hesse *), from which 

 species L. velatum differs conspicuously in other respects, as for instance in the general form 

 and in the presence of a foot-gland in the bud, a structure which, according to Prouho -), is 

 absent at all stages in L. annelidicola. 



5. Loxosoma cirriferwm n. sp. (PI. I, figs 11 — 13). 



Type. 337. J. On Retepora, 337. C. Stat. 71. Makassar, o — 32 Metres; mud, sand with mud, coral. 



(And on the Retepora slide, 337. C. 2 ). 

 193. E. On Retepora, 193. A. 3 Stat. 274. 5°28'.2S., I34°53'.9E. 57 Metres; sand and shells, 



stones. 

 193. G. On Retepora, 193. F. 1 . Stat. 274. Ibid. 

 297. D. On Retepora, 297. A. 1 . Stat. 273. OffPulu Jedan, Aru Islands, 13 Metres; sand and shells. 



[The addition of a numeral to the symbol representing the Retepore indicates, as in 

 other cases, that the Loxosoma is be found on the slide so designated. Thus 193. E is to be 

 found on the Retepora slide marked 193. A. 8 ]. 



Calyx relatively large, reaching a length of 2S0 — 310 u. , and a breath of 270 fx; broader 

 distally than proximally. lts margin bears a varying number of cirriform appendages, commonly 

 dilated proximally and with a filiform termination, sometimes branched. Tentacles 14 — 18 in 

 number, less numerous in young individuals. Stomach more or less globular, without distinct 

 lateral lobes. Sexes separate ; the females with a short row of eggs in the ovary, and carrying 

 as many as six or seven embryos in their vestibule (fig. 12). Buds as many as three at a 

 time ; an old bud being associated with a young bud on its own side and one of intermediate 

 age on the opposite side. The last attachment of the bud to the parent is by the tip of the 

 stalk, the foot-gland running along the oral side of the stalk as far as the commencement of 

 the calyx. Stalk variable in length (doubtless partly as the result of varying contraction) ; 

 sometimes slightly shorter than the calyx, but sometimes considerably longer, and reaching a 

 length of 400 [J. ; terminating proximally in a slightly marked disc of attachment , without 

 foot-gland. 



The specific name which I have chosen for the present species indicates what I regard 

 as one of its most distinctive features. The apparent variability of the occurrence ot the cirri 

 may be due to the fact that these structures are deciduous or easily affected by reagents. 

 Nickerson 3 ) has given reasons for believing that the "flash organs" of L. davenporti are not 

 permanent structures, but are deciduous, while others may develop later ; and he comments 

 on the complete absence of these structures in some individuals. While not expressing himself 



1) Cf. Prouho, H., 1S91, Arch. Zool. Exp., (2) IX, PI. V. 



2) Ibid., p. 110. 



3) Nickerson, W. S.. 1901, J. Morphol., XVII, pp. 357, 35S, PI. XXXII, fig. 11, PI. XXXIII, figs 16—19. 



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