BY E. P. KALLMANN. 489 



Microscleres.'- The spirulse are of all forms between corkscrew- 

 spirals of a little more than 2 turns and straight rods, the latter 

 faii'ly common and mostly between 12 and 25/x in length and 

 from 2 to 3-5//, in diameter. Tlie spirulse are less closely coiled 

 than in any other of the species, and are also slightly larger 

 (occasionally attaining to 18/i, in length). 



I'he microstrongyla are rarely less than 2 or more than 3-5//. 

 in diameter, and of all lengths up to 18/i,; a notable proportion 

 are reduced to spheruhe. They are mostly not centrotylote. 

 Abnormal forms of various shapes are rather common. 



EXPLANATION OF PLATES XXL-XXLX., figs. 1-2; XXXIX., figs.6-7. 



Plate xxi. 



Fig. 1. — Trachydadus J'usI iijni uf, .'^p.iiuv.; fioiii the (paitially dried) type- 

 specimen; ( X g). 



Fig.2. — T. rtteporoms, sp.iiuv. ; fioin the type-specimen; ( x s). 



■pig.3. — T. reteporosua, sp.nov. (var. ?); from an incomplete specimen with 

 slightly rugose surface; ( x i). Of. also PI. xxiv., figs. 1-2. 



Fig. 4. — T. .-cahrosiis, sp.nov.; from the type-specimen; ( x g). 



Fig 5. — T. pustitlomi.'i, sp.nuv. ; from the type-specimen; ( x* nearly). 



Plate xxii. 

 Figs. 1-2. — Tntrltycludna digifatxs Lendenfeld, typical furm; ( x f approx.). 

 rig.3. — T. di(jitaim var. (jraci/is, var.nov. ; from the type-specimen; ( x f). 

 Fig. 4. — T. diijUaitus var. r/andtis, var.nov.; from the type-specimen; {x^ 



nearly). 

 l.'ig.5. — T. d'Kjitaliis var. ■■^troiKjylalus, var.nov.; fium the (incomplete?') 

 - type-specimen; ( x {'^). 



Plate xxiii. 

 Fig. 1. — Tntrhycladns d'Kjilaiiix Lendenfeld, typical form; skeleton; (nat. 



size). 

 Fig.2. — T. di'jifatiis vav. ijracl/is, var.nov.; skeleton; (nat. size). 

 Fig.3. — T. diyitafu-f yav. claratm, var.nov.; skeleton; (nat. size). 

 li'ijr.4. — T. diyitatus yav. sfroiiify/alitfi, var.nov.; skeleton: (nat. size). 

 Figs.o-6. — T. reteporosufi, sp.nov.; skeleton (of the type-.specimen and of 



the specimen illustrated in PI. xxi., fig.3, respectively); (nat. size). 

 Figs.7-8. — 7'. rtttporomx, sp.nov., (var. ?); skeleton (of the specimens 



figured in Pl.'xxiv., figs. 1-2); (nat. size). 

 Fig.9. — T. scahrosii!^, .sp.nov.; skeleton: (nat. size), 

 Fig. 10. — T. J'astiyatus, sp.nov.; skeleton; (nat. .size). 



