256 RECORDS OF THK AUSTRALIAN Mrsi:iM. 



For tlie convenience of comparison with Micliaelsen's (Uui;iioses 

 of the first two of the above listed species, I o-ive brieriy the 

 cliaracters of the new species : — 



Tiivifrx ddvidid, sp. nov. 



Integument smootli, dorsal cluetie capilliform and crochets, 

 usually three or four of each kind per bundle. 8ome of the 

 crochets anteriorly present an intermediate tooth, or a delicate 

 membrane. Ventral cha?tte, crochets tln-ee ov four per bundle ; 

 the teeth eipial, but the lower one stouter. A single copulatory 

 cha^ta on each side of segment x., slender, slightly curved, l^lunt 

 pointed, and smaller than the ventrals. There is no chitinous 

 penis ; spermatheca short, cylindrical, with a duct of half its 

 length. 



Branchiura plkukotiieca,- sp. nov. 



(PL xlvi., tigs. 7-1-2) 



This is a nuich slenderer worm than tlie preceding, and stouter, 

 but owing to the coiled state of the mature worms, the figures 

 given here are only estimated, though approximately correct. 

 The body wall is highh' granrkdar. 



Dimensions. — About 12 to 15 nnn. x 0-5 mm. 



Ch(et(P. — The dorsal cluet;e consist of crocliets, and, in the 

 anterior segments, capilliforms are added to the bundle. Owing 

 to the brittle nature of the ciiiette, the majority of them, in all the 

 individuals, have the outer ends broken off, hence there is some 

 difficulty in distinguishing the existence of capilliforms — but b_v a 

 prolonged and careful stud}- of entire preparations and sections, 

 and preparations treated with glycerine and potassium-hydrate, 

 and the use of high powers of tlie microscope, it is possible to 

 recognise that in these anterior bundles, one or two of the dorsally 

 placed bristles are rather more delicate than the rest, and their 

 bases are rather longer and straight. 



I was led to exa,mine the matter very carefully for otlier 

 anatomical characters — e.;/. tlie modified cliEBtie near the male 

 pore — have been hitherto found only in association with these 

 ch;ft;e. 



■■i nXfvpov — side, drjKa — spevmutliefa : refers to lateral jiortion of tlie ajier- 

 tnre of this organ. 



