THE BURROWING BARNACLES (CIRRIPEDIA: ACROTHORACICA) 63 



surface; three dried specimens in Bursa bufo (Roding) from the area 

 of Seto, Wakayama-ken, Japan (in association with Weltneria hirsuta) ; 

 three dried specimens in Charonia sauliae (Reeve) from the area of 

 Seto, Wakayama-ken, Japan. Figured specimen from Siphonalia tas- 

 maniensis Ad. and Ang., from Spencer's Gulf, Southern Australia. 

 (C39180 of Australian Museum, Helm's Collection). 2.10 X 1-20 mm, 

 with aperture of 0.87 mm after KOH corrosion. Largest specimen 

 from this locality 2.28 X 1-20 mm. 



Other material, all from the Australian Museum through the 

 courtesy of Drs. Elizabeth Pope and Donald McMichael: from 

 Xenogalea stadicdus Hedley, wdth hermit crab, in lobster pot off 

 Forster, N.S.W. (coll. J. Kerslake); from Berylsma waitei Hedley 

 in fishtraps off Port MacQuarie, northern N.S.W. (coll. J. Kerslake); 

 from Cronia pseudamygdala Hedley, dredged off Port Curtis, Queens- 

 land; from Plecuna {Placenta) lobata Sowerby, Port Curtis, Queens- 

 land (largest specimen: 3.80 X 2.28 mm); from Dinassovica jourdani 

 (Kiener), locality data: southern to southwestern Australia; from 

 Bursa rubeta L., Darn Ley Is., Torres Str., Australian Museum 

 C51494; Fulgetrum sp. and Ostrea angasi, Victor Harbor, Granite 

 Island, S. Australia (Nat. Mus. Victoria); six specimens distributed 

 to Aust. Mus., NMV, USNM, SFSC, Brit, CA. 



Type-material: Holo type : Seto 197; Paratype: SFSC 630926. Holo- 

 type 2.6 X 1.4 mm in length and width. Additional material: Aust, 

 BPB, Brit, Belg, BA, CA, DubUn, Mex, Paris, UCT, USNM, Vict. 



The female: The mantle is a typical bag of musculature, with an 

 appreciable attachment disk, an orificial knob variously equipped 

 with teeth and hairs, and an aperture with lips considered analogous 

 to the operculum. In addition, a pair of lateral bars arise from near 

 the middle of the dorsal length of the apertural lips, and extend 

 posteroventraUy. They are not associated with teeth as in Crypto- 

 phialus, and are of a honeycomb or granular appearance. The mantle 

 is almost devoid of teeth around the periphery. Those teeth which 

 are present are extremely small. 



The operculum bears a pair of heavy tapered projections near the 

 anterior extremity. The aperture continues ventrally as a relatively 

 soft and unarmed portion, lined with the comb collar, and bearing 

 a few bristles. The tapered projections typically bear a long hyaline 

 spine at or near the tip, giving the general appearance of a spur. On 

 the heavy dorsal limb of the apertural lips, strong hyaline spines and 

 bifid teeth are arrayed, interspersed with bristles. The details of the 

 profile of the armament, and its variation, can be seen in figures 

 12b to k. The six specimens from Dina^ssovica jourdani from southern 

 or southwestern Australia had very strong spines and teeth which 



