210 The Philippine Journal of Science ' 1915 



great numbers of supporting lamellae for muscle attachment. In 

 the tentacles of contracted- specimens its edges are complexly 

 folded. 



The stomodseum, which is about one third as long as the body 

 of the extended polyp, is lined with the characteristic ciliated 

 columnar epithelium. Scattered among these cells are numbers 

 of goblet-shaped gland cells, making it probable that the stomo- 

 dseum has in C. minuta, as in Xenia (Ashworth, 1899) , a digestive 

 function. The siphonoglyphe is distinct and separated from the 

 rest of the stomodseum by two deep grooves. It extends with 

 little change from the mouth to the proximal end of the stomo- 

 daeum. The prominence of the siphonoglyphe in so small a 

 form is not in accord with Hickson's theory (1883) as to 

 the proportion between the development of the siphonoglyphe 

 and the extent of the cavity supplied by a single polyp. The 

 cells of the siphonoglyphe are long and very narrow with deeply 

 staining elongated nuclei and basal portions and lightly staining 

 outer areas. The cilia reach a length of 0.04 millimeter. 



The endoderm of the body like the ectoderm consists of a thin 

 layer, usually one cell thick, of flat broad cells. In the tentacles 

 the layer is thicker, and the cells are of the myoepithelial type 

 (Hickson, 1895). 



The mesenteries have the structure typical for most Alcyonaria. 

 The retractor muscles are strongly developed as would be ex- 

 pected in so contractile a form. The ventral mesenterial fila- 

 ments lack the central groove, but are otherwise typical and have 

 cells which resemble very closely those of the siphonoglyphe. 



The stolons average about 0.25 millimeter in diameter and lie 

 within the thin, wrinkled, loosely attached envelope of perisarc. 

 They consist of a thick, homogeneous mesogloea covered by a 

 thin, irregular layer of ectoderm, usually one cell deep. This 

 mesogloea is pierced by from two to four endodermal canals lined 

 with a smooth layer of thin, flat endoderm, one cell deep (fig. 3) . 

 As I have noted before, this type of structure agrees with that 

 found in the stolons of those species of Clavularia having fili- 

 form stolons and is quite diff"erent from that of Cornularia 

 cornucopise. 



A number of eggs which seem to be fairly mature were found 

 in the sections. They were attached to the mesenteries near 

 the bottom of the body cavity and are as usual covered with a 

 layer of mesogloea and endoderm. The eggs measure 0.04 

 millimeter in length, and 0.03 millimeter in breadth. The nu- 

 cleus is large, averaging 0.022 millimeter in length and 0.016 

 millimeter in breadth. It contains a number of deeply staining 



