BY G. I. PLAYFAIR. 25 



Var. GRANULA'i'A, u.var. (PL iii., f.l8). 



Loi'ica crasse denseque granulata, spinis posterioribus plerumque 

 parvis. 



Long, coi-p. 38-44, lat. 30-34; spin. c. 9-14, long, ad 5 /X. 



GuildfordlH; Fairfield 143; ParraniattalGo, 166; Lismore 242. 



Very often found in company with var. glabra. The forms of 

 Tr. armata are all of large size; the dimensions of all its varia- 

 tions are about the same, viz., 40-46 /x long and 30-35 /a broad, 

 with occasional specimens as low as 34 x 28 /x and as high as 

 50 X 36 /x; the most common length, without spines, is 40 /x. 

 Var. SPARSIGRANOSA, n.var. (PL iii., f.l9). 



Lorica ut in f. typica, sed granulis vel spinis obtusis brevissi- 

 mis sparsissime (polos versus densius) ornata, granulorum vice 

 interdum denticulis. 



Long. corp. 40-50, lat. 30-36; spin. c. 6, long, ad 6 /a. 



Canley Vale 110; Guildford 114; Botanic Gardens 150; Lismore 

 236. »- 



In this form, the short spines are merely elongated granules. 

 Fairly dense at the poles, especially the anterior one, they become 

 verv scattered towards the equator, where they are reduced to 

 granules. 



Var. LONGISPIXA, n.var. (PL iv., f.20). 



Lorica ovata subglobosa, postice latior, ubique rotundata ; 

 spinis validis acutis brevibus ubique vestita, a tergo spinis gra- 

 cilioribus; aculeis posterioribus magnis curvatis plerumque 4-6 

 instructa. 



Long. Corp. 43-44, lat. 32-34; spin. long. 5-6; acul. post. 4-10, 

 long, ad 24 /x. 



Botany 37; Botanic Gardens 137, 150. 

 Var. DUPLEX, n.var. (PL iii.^ f.20). 



Lorica ovato-oblonga, postice paullo latior, crasse sparseque 

 granulata, polum anteriorem versus glabra; fronte et a tergo 

 corona spinulorum ornata, spinis anterioribus rectis obtusis 

 bacillaribus circa 12, posterioribus longioribus acutis recurvatis 

 circa 10, ad os dentibus 4; colore fusco. 



Long. Corp. 46, lat. max. 35; spin, anter. long. 8/x, poster. 12 ji. 



Lismore 240. 



