ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 893 



three regions, but the general form was spherical, there were no prolonga- 

 tions, and death supervened after a few days passed in this condition. 

 When the quantity of chalk was less the larvas did not pass beyond the 

 gastrula-stage. 



Ccelenterata. 



New Anthozoon.* — Dr. C. Yiguier gives an account of the new 

 Anthozoon of which Prof. Lacaze-Duthiers has spoken as Paralcyonium 

 edwardsi, but for which he proposes the new generic term of Fascicularia, 

 Dr. Viguier found it in the Bay of Algiers. Though the appearance of 

 the stolons is different, a colony has, especially when its polyps are con- 

 tracted, considerable resemblance to Paralcyonium ; when, however, the 

 polyps are protruded, very marked differences become apparent. 



The stolons are flattened, and vary in width from two or three io 

 seven or eight mm. They form an irregular plexus which is covered 

 by a light greyish-yellow layer of slime. There are only a few small 

 spicules in the stolons, the walls are essentially constituted of a well- 

 developed connective layer. In well-developed pieces the endodermal 

 investment is reduced to a simple layer of cells, and the same may be 

 said of the true ectoderm. 



The groups of polyps are scattered irregularly on the stolons. These 

 groups may be divided into a basal and a free portion. The common 

 basal column has the same appearance as the stolons ; it has a lower 

 surface which adheres to the foreign body which serves as its support, 

 and an external surface. On the latter, when the group is well expanded, 

 there are visible longitudinal grooves which correspond to the lines of 

 separation of the polyps. In addition to these there are transverse 

 grooves which obscurely divide the column into segments. The presence 

 of large vertical spicules prevents any flexion in this part of the column, 

 as is the case also in Paralcyonium. 



Unlike most of the Alcyonaria, Fasciolaria has spicules unlike those 

 of the rest of the body in the upper region of the polyp ; these are 

 small oval plates, slightly constricted in their middle ; they are seen, 

 when highly magnified, to be marked by parallel striae ; the presence of 

 these planes of cleavage causes the spicule to be almost opaque. A 

 siphonoglyph is developed. The author has a few notes on the pro- 

 cesses of reproduction. 



As to the systematic position of this new genus, M. Viguier believes 

 that it is necessary to institute a new family, which would be charac- 

 terized by the network of stolons uniting the different groups into one 

 colony, and by the absence of vascular connections between the polyps 

 of one and the same group. 



French Pennatulids.f — Dr. C. Fischer has a note on the Pennatulids 

 found on the French coasts, of which there are, at least, eleven species, 

 so that their Pennatulid-fauna appears to be very much richer than that 

 of the British seas is at present known to be. 



Agalma Clausi4 — Dr. M. Bedot describes under this name a new 

 species, which, in the recently published system of Siphonophora by 

 Prof. Haeckel, would be placed in the genus Crystallodes. It was found 



* Arch. Zool. Exper. et Gen., vi. (1888) pp. 351-73 (2 pis.). 

 t Bull. Soc. Zool. France, xiv. (1889) pp. 31-8. 

 X Kec. Zool. Suisse, v. (I8SS) pp. 73-91 (1 pi.). 



