164 



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Art. XX. — Description of an Undescribed Barnacle of the Genus Scalpelluin 



from New Zealand. 



By N. Annandale, D.Sc, F.A.S.B., Superintendent of the Indian Museum, 



Calcutta. 



Communicated by Professor W. B. Benham. 



[Bead before the Otago histitrtte. -'Uh July, 1910.] 



In a collection of barnacles from New Zealand recently sent me by Professoi' 

 W, B. Benham there is a large Scalpellum, labelled " Scalpelluni spinosus,'' 

 without further data. As this specimen represents a species hitherto 

 undescribed, and as the name has not already been used in the ffenus. the 

 species may be described as — 



Scalpellum (Smilium) spinosum sp. nov. 



Capitulum broad, compressed as a whole, but somewhat swollen at the 

 base ; the occludent margin vertical, slightly sinuous ; the carinal margin 

 feebly curved. Fifteen smooth pinkish valves present, covered with a 

 minutely hairy translucent brownish membrane. Terga large, lozenge- 

 shaped, slightly retroverted in the upper third, extending far beyond the 

 carina. Scuta broadly triangular, with the bases rounded and tangential 

 to the base of the capitulum ; the tips not overlapping the terga. Carina 

 short, nearly straight, ridged dorsally but not laterally : the sides of its 

 upper half concave ; the base bluntly pointed between the carinal latera. 



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Fig. 2. 



Fig. 3. 



Fig. 1. 



Fig. 4. 



Fig. 1. Scalpellum sphiosum ; half natural aize. 



Fig. 2. Portion of the peduncle; X 4. (The baad.s of blunt cak-areous 



spines alternate with bare areas, which are here sha(le<l.) 

 Fig. 3. Mandible ; X 15. 

 Fig. 4. First and seroiid maxillae ; X !'). 



Upper latera narrowly triangular, the scutal and lower margins being curved 

 and much longer than the carinal ; the scutal angle pointing towards th(> 

 lateral angle of the scuta. Rostrutn, latera of the basal whorl, and subcarinn 

 prominent, pointed, spinelike. 



Peduncle stout, barely longer than tJic capitulum, surrounded by 

 numerous sinuous or angulate furrows that separate ridges in which the 

 very numerous peduncular plates are imbedded ; these in the form of 

 minute blunted calcareous spines. 



