488 PROCEEDINGS OP THE ACADEMY OP 



Bryopa (S. G. Dacosta,) Australis, H. and A. Adams, Genera, ii. p. 649, 



1858. 

 Dacosta Australis, Gray, Zool. Proc. p. 315, 1858. 

 Clavagella elongata, Broclerip, Zool. Proc. p. 116, 1834. 



" " Trans, i. p. 265, t. 35, f. 1-4, 1835. 



Miiller, Syn. Test. Viv. p. 240, 1836. 

 Hanley, Desc. Cat. p. 2. t. 11, f. 1, 2, 1842. 

 Cailliaud, Guerin's Mag. Zool. p. 17, t. 50, f. 3, 1842. 

 " Chenu, Illust. Conch. Clavagella, p. 4, 



t. 1, f. 4. 

 Catlow, Conch. Nomenc. p. 2, 1845. 

 H. and A. Adams, Genera, ii. p. 338, 1856. 

 Bryopa elongata " " " " p. 649, 1858. 



Description. " B. camera elongato-ovata ; valva libera elongata, subtrigona, 

 convexa, externe concentriee valde rugosa, intus nitente ; umbone acuto." 

 Broderip. 



Hah. Pacific. 



I agree with Dr. Gray in uniting B. elongata with B. Australis, a 

 comparison of the descriptions and figures of the two species demonstrates 

 their entire identity. 



5. B. balanorum, Scacchi, sp. 



Clavagella balanorum, Scacchi, Mss. Philippi, Weigman's Archiv fiir 



naturg. i. p. 181, t. 3, f. 1-6, 1340. 

 Cailliaud, Guerin's Mag. Zool. p. 16, t. 52, f. 1-5, 



1842. 

 Cailliaud, Chenu's 111. Conch. Clavagella, p. 4, 



t. 1, f. 7. 

 Hanley, Desc. Cat. p. 2, t. 10, f. 21, 1842. 

 Philippi, Enum. Moll. Sicil. ii. p. 1, t. 13, f. 2, 



1844. 

 Catlow, Conch. Nomenc. p. 2, 1845. 

 Gray's Figs, Moll Anim. v. t. 340, f. 1-5, 1857, 

 H. and A. Adams, Genera, ii. p. 338, 1856. 

 Bryopa balanorum, " " " " p. 649, 1858. 



Description. " B. testa bivalvis in conceptaculo ovali, rotundata ; con- 

 ceptaculum ipsum in fistulam subtetragonam productum ; valvse subtrigonise, 

 rugosa?. ' ' Cailliaud. 

 Hah. Naples. 



I have strong doubts respecting the distinctness of this species from 

 B. aperta. The shell is uniformly smaller, and the tube short, just ex- 

 tending beyond the surface of the masses of Balani in which it is imbedded. 

 Perhaps the young shell of B. aperta? 



Bkechites. 

 1. B. annulus,* Deshayes, sp. 



Aspergillum annulosum, Deshayes, Mss. in Mus. Cuming. 



Reeve, Monog. ^sp. t. 1, f. 1, a, b, I860. 

 Brechites annulus, Gray, Zool. Proc. p. 312, 1858. 

 Description. " B. testa valvis sublate ovatis, tumidiusculis : vagina elon- 

 gato-attenuata, undique undato-annulosa ; fimbria perampla, regulari, tubu- 

 lis longis, minimis, confertis ; disco valde convexo, perforationibus parvis, 

 numerosis, parum tubulosis." Reeve. 

 Hah. Singapore. 



This species may be distinguished from B. Javanus and B. pulchrus 

 by the annular markings on its tube. The frill is much more regular than 

 in either of the other species. 



[Dec. 





