124 On Barnacles of the Genus Scalpellum. 



Scalpel lum (Scalpellum) gruvelii, Annandale. 



Scalpellum (/ruvelii, and var. quadratum, Annandale, Ann. & Mag. 



Nat. Hist. (7) xvii. 1906, p. 390; id. Herdman's Rep. Ceylon Pearl 



Oyster Fisheries, Roy. Soc. v. 1906, p. 141, text-fig. 4; id. Illustr. 



Zool. ' Investigator,' Crust. Entom. pi. i. fig. 1, pi. ii. figs. 1, 1 a, 3 



(1907) ; id. Rec. Ind. Mus. ix. 1913, p. 232. 

 Scalpellum chitinosum, Hoek, ' Siboga ' Exp., Cirripedia Pedunculata, 



1907, p. 73, pi. vii. fig. 4. 



Localities.— Lat. 12° N., long. 46° E. (Gulf of Aden), 

 770 fath. C./S. < Colonia.' 1 ? . 



Lat. 14° 20' N., long. 52° 30' E. (Gulf of Aden), 

 1200 fath. C./S. ' Electra.' 1 ? . (Annandale det.) 



Remarks. — In view of the variability which Annandale 

 attributes to this species, and of the fact that one of the 

 specimens was determined by him, they may both be recorded 

 under this name, although I am not altogether satisfied as to 

 the characters that are said to distinguish the species from 

 some others, such as S. curiosum, Hoek. In the characters 

 of the cirri and of the mandible one of our specimens agrees 

 well with the figures given by Pilsbry (Bull. U.S. Nat. Mus. 

 Ix. 1907, p. 75) for his S. imperfectum, which Annandale 

 suggests as a possible synonym for this species. 



Scalpellum (Scalpellum) laccadivicum, Annandale. 



Scalpellum laccadivicum and var. investigatoris, Annandale, Ann. & 

 Mag. Nat. Hist. (7) xvii. 1906, p. 393 ; id. Illustr. Zool. < Investi- 

 gator,' Crust. Entoin. pi. i. figs. 3, 4 (1907) ; id. Rec. Ind. Mus. ix. 

 1913, p. 235. 



Scalpellum subflavum, id. Ann. & Mag. Nat. Hist. (7) xvii. 1906, p. 397 ; 

 id. Illustr. Zool. ' Investigator,' Crust. Entom. pi. i. fig. 6 (1907). 



Scalpellum polymorphum, Hoek, ' .Siboga ' Exp., Cirripedia Pedun- 

 culata, 1907, p. 80, id. vii. figs. 9-11. 



Locality.— Lat. 8° 46' S., long. 114° 44' E. (Java-Aus- 

 tralia), 400 fath. C./S. ' Recorder.' 1 ? . 



Remarks. — The synonomy given by Annandale and repro- 

 duced above implies a range of variation that may well 

 include our single specimen which approaches Annandale's 

 S. subflavum. It seems also possible that S. longius and 

 S. lambda, Annandale, concerning the specific distinctness 

 of which from one another Annandale expresses himself as 

 doubtful, might also be included within the limits of the 

 same specific name. 



