24 xrBULipORiDj:. 



1. Alecto major, Landsb. (Plate XVIT. figs. 3-5, 

 and ? Plate XVI. fig. 3.) 



Cells bi- to triserial, immersed ; surface smooth. 



.Vlecto major, JoJmst. B. Zooph. 2ud ed. vol. i. p. 281, pi. 49. fig.s. 3 



& 4. 

 Alecto repens, Woud, Ann. N. Hist. xiii. p. 144 : Busk, Crag Pol. 



p. 112, pi. 20. fig. 8. 

 ? .\lecto dipliotoma, Landsb. 



? Tubulipora trahens, Cotich (non Smitt, (Efversif/t, 1866, p. 403). 

 Y Probo.scina uiargiuata, D'Orb. Pal. Fran'q. pi. 759. figs. 4 & 5. 



Hah. British and Irish coasts ; Scandinavian and Arctic seas. 



2. Alecto dilatans, W Thomps. (Plate XXXII. fig. 2.) 



Branches dilated at the extremity ; cells multiscrial (about four 

 rows). 



Alecto dilatans, W. Tlwmps. ; Johnst. I. c. p. 281, pi. 49. figs. -5-8 ; 



Busk, Crag Ful. p. 112, pi. xx. figs. 6 & 7. 

 Diastopora repens (var. /3), Smitt, I. c. p. 396, pi. viii. figs. 1-6. 

 ? Diastopora echinata, Reuss, Foss. Pol. Wien. Tciiiiirb. p. 52, pi. ^'ii. 



tigs. 14 & lo. 

 ? Idmonea divaricata, depressa. cenomana, elegaus, D'Orh. 



Hah. British and Irisli coasts ; coast of Xorway, &c. 



3. Alecto granulata, M.-Edw. (Plate XXXII. fig. 1.) 



Cells uuiserial, subventricose : walls granular ; branches linear, 

 frequently anastomosing. 



Alecto grauulata, M.-Edw. I. c. p. 13, pi. 16. fig. 3; Jvknston, I. c. 



p. 280, pi. 49. figs. 1 & 2 ; W. Thompson (J/.S'.) : nOrhignij, Pal. 



Franq. pi. 028. figs. 5-8. 

 ? Tubulipora traheus, Couch, Corn. Faun. iii. p. 10-j, pi. 19. fig. o (very 



bad). 

 Stomatopora granulata, D'Orh., Pal. Franq. p. 830. 

 ? Stomatopora iucrassata, id. ib. p. 837. 

 Tubidipora (subgen. Proboscina, Aud.) iucrassata (var. /3. forma 



serpens), Smitt, I. c. p. 402. 



Hah, British and Irisli coasts ; coasts of Xorway and Sweden 

 (on shells and stones). 



2. TUBULIPORA, Lanik. 



Zoarium usually springing from a .single minute subglobular cell, 

 and expanding as it grows into an irregularly lobate or entire, reni- 

 form or fan-shaped, adnate growth. Cells elongated, tubular, 

 distinct, partially free and ascending, disposed irregulai'ly in more 

 or less regular divergent series. 



Tubulipora, Bu.fk, FngL Cgehtp. art. "Polyzoa," col. lo; Crag Pol. 

 p. 110; Lamouroux : llagcninr. 



