1578 THE VOYAGE OF H.M.S. CHALLENGER. 



4. AiUogra2}his triglockin, n. sp. (PL 103, fig. 17). 



Eadial tubes robust, club-shaped at the distal end. Terminal branches three (rarely two or 

 four), widely divergent, geniculated and recurved, smooth, without lateral teeth and terminal 

 spathillse. 



DimevMons. — Length of the tubes 1'2 to L8, breadth 0-02 ; branches 012 to 015. 



Habitat. — Central Pacific, Stations 271 to 274, surface. 



5. Aulographis cruciata, n. sp. (PI. 103, fig. 25). 



Eadial tubes slender, cylindrical, of equal breadth. Terminal branches almost constantly four, 

 equal, regularly crossed (very rarely three or five), slender, straight or slightly curved, smooth, 

 divergent outwards, six to eight times as long as the breadth of the tulje. 



Dimensions. — Length of the tubes I'O to 1"5, breadth 0'02 ; branches 012 to 015. 



Habitat. — South Atlantic, Stations 325 to .332, surface. 



6. Aulographis ancorata, ii. sp. (PL 103, fig. 21). 



Eadial tubes slender, cylindrical, straight. Terminal branches constantly four, equal, regularly 

 crossed, arcuato-recurved or nearly semicircular, smooth, six to eight times as long as the breadth 

 of the tube. Eesembling an anchor with four teeth. 



Dimensions. — Length of the tubes 0-5 to 0'7, breadth 0'012 to O'Olo ; branches 0'07 to 0'09. 



Habitat. — South-west Atlantic, Station 318, depth 2040 fathoms. 



7. Aulographis stellata, n. s]). (PL 103, figs. 23, a— c). 



Eadial tubes club-shaped, gradually thickened towards the distal end. Terminal branches 

 stellate, numerous (five to ten or more), diverging in all directions, smooth, straight or slightly 

 curved, slenderly conical, three to five times as long as the distal breadth of the tube. The 

 branches are very variable in size, sometimes very small (figs, a, h). 



Dimensions. — Length of the tubes 0'4 to O'B, breadth 0'02 ; branches 0-01 to 0'02. 



Habitat. — Indian Ocean, Madagascar (Eabbe), surface. 



8. Aulographis penicillata, n. sp. 



Eadial tubes slender, cylindrical, of equal breadth. Terminal branches pencil-shaped, smooth, 

 very numerous (twenty to thirty or more), diverging outwards, curved, eight to ten times as long as 

 the breadth of the tube, very thin and fragile, resembling a brush. 



Dimensions. — Length of the tubes I'O to 1-5, breadth 0-02 ; branches 015 to 0-2. 



Habitat. — North Atlantic (Antilles), Weber, surface. 



