Eschara. ZOOPHYTA. ESCHARAD^E. 531 



Gen. TEREBELLARIA.— Branched, spirally twisted ; pores 



tubular, disposed spirally. 



1. T. ramosissima Branches numerous, divaricated, nearly cylindrical, 



obtuse. — Lamouroux, Zooph. 84, t. lxxxii. f. 1. Geol. Eng. 214 — Oolite. 



ESCHARADiE. 



Gen. L. ESCHARA. — Frondescent, with a single layer of 

 cells on each side. 



124. E. retifbrmis. — Plates broad, winding, uniting irregu- 

 larly. 



Ray, Syn. Stirp. 31 E. foliacea, Ellis, Coral. 71, t. xxx. f. 3. Borl. 



Corn. 239, t. xxiv. f. 6 Millepora fascialis, Linn. Syst. i. 1283 — 



English coast. 



In masses from a few inches to upwards of a foot, formed, by the union of 

 the plates, into irregular cavities ; surface rough, the orifices of the cells are 

 round, usually with a blunt tooth on one side, the intervening spaces rough. 



125. 'Fi.Jascialis. — Expansions narrow, compressed, branch- 

 ed, occasionally united. 



Italian coral, Ellis, Coral. 72, t. xxx. f. 6 E. fasc. Pallas, El. 43. — 



English coast. 



This chiefly differs from the preceding in being branched, and the divi . 

 sions being flat and narrow. In the opinion of Pallas it is only a variety. 



Gen. LI. RETEPORA. — Expanded, with regular openings, 

 forming a net-work ; cells on the upper side. 



126. R. reticulata. — Rough on both sides, the divisions 



rounded ; the cells with the orifices declining, and protected by 



a spinous process on the central margin. 



Millepora retepora, Borl. Corn. 239, t. xxiv. f. 8. — M. reticulata, Linn. 

 Syst. i. 1284. Fab. Faun. Gr. 433.— Coral, Cordiner, Ruins, t. No. 6. 

 — In deep water. 



Expanding to the extent of two or three inches ; more or less cup-shaped, 

 waved, uniting ; the holes are oval, regular, the intervening spaces support- 

 ing two or three pores in oblique rows. This species is very distinct from 

 the R. cellulosa, with which it has been confounded. 



EXTINCT SPECIES. 



1. It. flustriformis. — Form unknown, spreading; holes suboval, the walls 



striated and porous — Millepora flust. Mart. Pet. Derb. t. xliii. f. 1, 2 Car- 



boniferous Limestone. 



2. It. elongatu. — Holes quadrangular lengthened, unequal. — Fan coral, Ure, 

 ltuth. 329, t. xx. f. 3, 4. — Carboniferous Limestone. — The cast of the boles of 

 these two species exhibits a file-like appearance. 



l1 2 



