CONQDON. 



THE HYDRUIUS OF BERMUDA. 



465 



Eudendrium hargitti (new species). Figures 1-5. 



This hydroid was found at only one place, a shallow inlet on the 

 south shore of Bermuda (lat. 32° IG'oO", long. 64° 4;'/ 5"). It is a 

 handsome little form with bright reddish brown hydranths and horny 

 brown perisarc, which contrasts with the usual substratum of white 

 coral sand (Figure 1). 



Trophoso)}te. Stem unfascicled ; colony twenty to fifty millimeters 

 long, becoming nearly transparent toward the extremities. Branches 

 straight, few, nearly par- 

 allel to the main stem, 

 distributed irregularly, 

 joining stem by an abrupt 

 bend. Annulations at ba- 

 ses of colony and branches, 

 occasionally elsewhere. 

 Hydranth most deeply 

 colored at base of hypo- 

 stome; tentacles from 

 thirty-five to forty-five, in 

 contraction forming two 

 closely appressed rows ; 

 hypostome very mobile, 

 contracting into a shallow 

 cup or extending to a 

 length greater than that 

 of the hydranth body. 

 Some hydranths provided 

 with a groove near the 

 base containing gland cells 

 and thread cells. 



Female Gonosome. Colonies dioecius. Two types of orange -colored 

 gonophores (Figures 2, 4). One begins its development before the other, 

 has an undivided spadix, consisting of a tube passing from the attach- 

 ment upward and around the eg^, and forms in conjunction with not 

 more than four others a circle around the base of the hydranth body. 

 The gonosomes of the second type are associated in clusters of two to 

 seven closely and rather irregularly around a thick finely annulated 

 pedicel, which may or may not have a terminal hydranth. They are 

 partly confluent with the stem, ovoid, completely invested on the exposed 

 side by a spadix, often indistinctly separated into a proximal and a 

 distal group. A dozen clusters may occur close together on a basal 



VOL. XI.II. — 30 



FiGi'RE 2. Eudendrium hargitti. Orthospadi- 

 ceous and streptospadiceous gonophores (X 11). 



