238 MYRIOZOID^. 



a. Avicularia with a pointed mandible, generally lateral. 



SCHIZOPORELLA UNICORNIS, Jollliston. 

 Plate XXXV. figs. 1-5. 



Berenicea coccinea, Johnst. Trans. Newc. Soe. ii. 267, pi. xii. fig. 5. 

 Lepralia coccinea, Johnst. Br. Z. ed. 1, 278, pi. xxxiv. figs. 1-3. 

 Lepralia unicornis, Johnst. Br. Z. ed. 2, 320, pi. Ivii. fig. 1 : Busk, Quart. 



Journ. Micr. Sc. iv. 309, pi. x. figs. 3, 4 ; Crag Pol. Ah, 



pi. V. fig. 4: Alder, North. Cat. 49: Hincks, Devon & 



Cornw. Cat. 41 (sep.). 

 Lepralia spinifera (part.), Busk, B.M. Cat. 69, pi. Ixxx. figs. 5-7, pi. xci. 



figs. 1, 2 : Heller, Bryoz. d. Adriat. Meer. 28 (vars. uni- 

 cornis and serialis) : Manzoni, var. unicornis, Bryoz. Plioc. 



Ttal. prim. Contr. 7, pi. ii. fig. H. 

 Lepralia ansata, Johnst. B. Z. ed. 2, 307, pi. liv. fig. 12: Busk, Crag Pol. 



45, pi. vii. fig. 2 : Rincks, Dev. & Cornw. Cat., Ann. N. H. 



ser. 3, ix. 70 : Reuss, Bryoz. osterr.-ungar. Miocans, pt. i. 



18, pi. vi. fig. 12 : Heller, Bryoz. Adr. Meer. 29 : Manzoni, 



Bryoz. foss. Ital. Contr. iii. 9, pi. ii. fig. 11. 

 ?Escharina Isabelleana, D'Orb. 'Voyage' &c., v. pt. 4, 12, pi. iv. figs. 



13-16 (atlas in vol. ix.). 

 Lepralia tetragona, Eeuss, Foss. Polyp, d. Wiener T. B. 78, pi. ix. fig. 19 



(form unicornis) : Manzoni, Bryoz. foss. Ital. Contr. iii. 8, 



pi. ii. fig. 10. 

 Lepralia ansata, var. tetragona, Beuss, Bryoz. d. osterr.-ungar. Miocans, 



pt. i. 19, pi. vii. figs. 1, 2; var. ^wrosa, 1. c. 18, pi. vi. 



fig. 13. 

 Eeptoporina tetragona, B'Orl). Pal. Fr. Ter. Cr. v. 442. 

 Escharina variabilis, Leidi/, " Mar. Invert. Ehode Isl. & New Jersey," 



Journ. Ac. N. Sc. Philadelph. ser. 2, iii. (18.55-8), 142, 

 pi. xi. fig. 37. 

 ? MoLLiA VULGARIS, forma ansata, part., Smitt, 1. c. Krit. Fort. pt. iv. 15 



& 104, pi. XXV. fig. 80. 



Zooecia ovate or rectangular, distinct, separated by deep 

 sutures, surface thickly punctured, often silvery, dis- 

 posed in linear series ; orifice semicircular, lower mar- 

 gin straight, with a well-marked central sinus, peristome 

 not raised ; a pointed mucro of varying length, a little 

 below the orifice, and on each side of it (or on one) an 

 aviadarium, sometimes nearly on a level with the lower 

 margin, the acute mandible directed obliquely outwards, 



