316 Transactions. 



includes the delicate network of connectives between the efferent 

 and afferent branches. On the rectal side of the lung are nume- 

 rous efferent and afferent vessels, uniform in size and finely 

 branched ; while on the cardiac side, in addition to some small, 

 short tributaries, are four strongly marked and much-branched 

 veins. The posterior of these veins, which unites with the great 

 pulmonary vein a little anterior to the junction of the latter 

 with the auricle, is much the largest ; it divides into two promi- 

 nent branches, each with numerous lesser tributaries. The 

 afferent vessels in this area are correspondingly large afid much 

 branched. 



EXPLANATION OF PLATE XX. 



Fig. 1. I D i o 



tj,. r Buccal mass, &c. 

 big. 2. 1 



5* jl Teeth. 



Fig. 4. ) 



Fig. 5. Generative organs. 

 Fig. 6. Pallial organs. 



Lettering. 



alb.g. Albumen-gland. per. Pericardium. 



af.v. Afferent pulmonary vessels. r. Rectum. 



ef.v. Efferent pulmonary veins. r.m. Retractor muscle. 



h.g. Hermaphrodite gland. r.s. Receptaculum seminis. 



h.d. Hermaphrodite duct. r.l. Right mantle lobe. 



k. Kidney. s.d. Salivary ducts. 



l.l. Left mantle lobe. s.g. Salivary gland. 



oss. (Esophagus. u. Ureter. 



p. Penis. vd. Vas deferens. 

 p.v. Great pulmonary vein. 



Art. XXXVIII. — Notes on New Zealand Mollusca, with De- 

 scriptions of New Species and Subspecies. 



By Henry Suter. 



Communicated by A. Hamilton. 



[Read before the Wellington Philosophical Society, 4th October, 190").] 



Plate XVIII. 



Meleagrina radiata, Lamarck (1836). 

 Lamarck, Anim. s. vert., 2nd ed., vol. vii, 1836, p. 107. 



Specimens of this shell were found at the Kermadec Islands 

 by Captain J. Bollons, and I am indebted to Professor W. H. 

 Dall, of Washington, for their identification. 



