258 W. D. Lang — Cheilostome Polyzoa. 



Tylopora rowki, n.sp. PI. XVII, figs. 7 and 8. 

 (As a mark of regard to Dr. A. W. Rowe, who kindly lent me the 

 tjrpe-specimen for description.) 

 Diagnosis. — Tylopora with a headed termen, arid short (about - 6 mm. 

 long) rather blunt cecia. 



Type-specimen. — In the collection of Dr. Eowe of Margate ; 

 in crusting Infulaster excentricus (S. Woodward) ; Turonian, zone- of 

 Terebratulina ; Norfolk. 



Tylopora lorea, n sp. PI. XVII, figs. 9, 10 and 11. 

 (Loreus, ' made of thongs,' in allusion to tbe strap-shaped asty.) 

 Diagnosis. — Tylopora with a beaded termen, and longer (about 



■8 mm.) and rather more pointed oecia. 



Type-specimen. — British Museum specimen no. D. 15389 ; Turonian, 



zone of Holaster planus ; Church Top Pit, South Elkington, west of 



Louth, Lines ; Coll. C. S. Carter. 



EXPLANATION OF PLATE XVII. 

 Fig. 



1. Hapsidopora harmeri, n.sp. Portion of the type-specimen, showing 



bilateral and unilateral branching, x about 34 diameters. British 

 Museum specimen no. D. 21673. Cenomanian, Chalk Marl. Cambridge. 

 F. Mockler Collection. 



2. Hapsidopora harmeri, n.sp. A single oecium — the distal-most — of the 



part of the type-specimen represented in fig. 1. x about 50 diameters. 



3. Hapsidopora arcuata, n.sp. Portion of the type-specimen, showing 



bilateral and unilateral branching. The most proximal oecium is 

 a renewed oecium. x about 26 diameters. British Museum specimen 

 no. D. 22871. Cenomanian, Chalk Marl. Cambridge. F. Mockler 

 Collection. 



4. Hapsidopora arcuata, n.sp. A single oecium from another part of the 



type-specimen than that represented in fig. 3. x about 40 diameters. 



5. Tylopora ligatrix, n.sp. Portion of the type-specimen. x about 



26 diameters. British Museum specimen no. D. 29205. [Turonian, 

 zone of Bhynchonella cuvieri.~] Burkam, Kent. Hon. R. Marsham 

 Collection. 



6. Tylopora ligatrix, n.sp. A single oecium — the most distal on the right- 



hand side — of the part of the type-specimen represented in fig. 5. 

 x about 40 diameters. 



7. Tylopora roivei, n.sp. Portion of the type-specimen, x about 26 diameters. 



Turonian, zone of Terebratulina. Norfolk. In the collection of 

 Dr. A. W. Bowe. 



8. Tylopora roivei, n.sp. A single oecium — the most distal on the right-hand 



side — of the part of the type-specimen represented in fig. 7. x about 

 40 diameters. 



9. Tylopora lorea, n.sp. Portion of the type-specimen, showing a branch. 



Five of the oecia are renewed cecia, and four are closed cecia ; the 

 remaining oecium (on the left, proximally) is normal. x about 

 26 diameters. British Museum specimen no. D. 15389 ; Turonian, 

 zone of Holaster planus. South Elkington, Lines. C. S. Carter 

 Collection. 



10. Tylopora lorea, n.sp. A single oecium, the only normal one in the portion 



of the type-specimen represented in fig. 9, namely that on the left-hand 

 side and proximally situated. x about 40 diameters. 



11. Tylopora lorea, n.sp. A single renewed oecium — just proximal to the 



middle — of the part of the type-specimen represented in fig. 9. X about 

 40 diameters. 



