Dr. Johnston' s Catalogue of Zoophytes. 269 



18. TUBULIPORA. 



1. T. patina, base a circular saucer with an even thin border; tubes in the disk crowded, 



oblique ; central ones smaller ; those towards the circumference larger, some erect ; 



aperture circular, entire (tab. nost. ix. fig. 8). 

 T. patina, Lam, Hist. Nat. ii. 163- 

 Millepora verrucaria, Soland. Zooph. 137. 



Madrepora verrucaria, Turt. Br. Faun. 204 ; Stew. Elem. ii. 426 ; Hogg's Stockton, 38. 

 Discopora verrucaria, Flem. Br. Anim. 530. 

 Hab. On Shells and Corallines from deep water. 

 A species of much beauty under the magnifier ; white, calcareous, half an inch across ; 



border of the circular base thin, plain, and scored with faint lines. 



2. T. transversa, irregularly branched, depressed ; tubes arranged in distinct transverse 



rows, apertures even ; circular. 



T. transversa, Lam. Hist. Nat. ii. 162 ; Stark, Elem. ii. 437. 



T. serpens, Flem. Brit. Anim. 529. 



Millepora tubulosa, Soland. Zooph. 136 ; Turt. Brit. Faun. 205 ; Stew. Elem. ii. 428 ; 

 Bosc, Vers, ii. 345 ; Hogg's Stockton, 37. 



Tubipora serpens, Turt. Lin. iv. 614 ; Stew. Elem. ii. 426 ; Bosc, Vers, ii. 426. 



Small purple Eschara, Ellis, Corall. 74, t. xxvii. No. 3, e, E. 



Hab. On Corallines, &c, common. 



This is generally of a faint purple colour, and rarely exceeds half an inch in length. 

 The tubes are neatly arranged in rows which run across the base, and kept separate in 

 the centre by a groove which winds along the branches. The walls of the tubes are mi- 

 nutely frosted. 



VI. Z. APOLYPA. 



19. HALICHONDRIA. 



] . H. palmata, elastic, fibrous, reticulated, the meshes irregularly quadrangular ; erect, ir- 

 regularly branched ; branches compressed ; fecal orifices circular, dispersed all over 

 the sponge, with entire and slightly raised margins ; spicula straight or slightly 

 curved, pointed at each end. Palmated Sponge. 



H. palmata, Flem. Br. Anim. 523. 



Spongia palmata, Sib. Scot. ii. lib. quart. 55 ; Soland. Zooph. 189. t. 58, fig. 6 ; Turt. 

 Brit. Faun. 209; Lam. Hist. Nat. ii. 379 ; Lamour. Corall. 181 ; Montagu in Wern. 

 Mem. ii. 80. 



Hab. Deep water. On the coast at Holy Island. 



My specimen of this species is eight inches in height. The fibres, as Dr. Fle.ming re- 

 marks, have a centro-peripheral and distal direction, and form an irregular net-work at the 



