CIRRIPEDIA FROM THE PACIFIC COAST OF NORTH AMERICA. 1H7 



Scalpellum proximum, n. Bp. 

 [PI. vi. fig. 9-11.] 



Capitulum ovate, compressed, composed of 13 well-calcified valves. There is a well-marked band of 

 integumenl between the carina ami tin - other valves. It is covered with a thin membrane which is 

 rather closely, shortly pilose. The plates have a sculpture of wide-spaced low ridges parallel to growth 

 lines. The occludenl margin forms an even curve nearly as arcuate a- the carina. 



The scutum is irregularly quadrangular, with convex occludenl margin, slightly recurved and \ cry 

 acute umbo, which projects slightly over the tergum; basal margin convex, upper margin concave, ami 

 lateral margin sigmoid. The upper latero-tergal angle projects in a point between the apex of the upper 

 latus ami the tergum. 



The tergum is triangular with recurved apex: occludenl margin convex, basal margin Btraighl and 

 oblique, the carina! margin undulating. The carina is very long, regularly arched, with slightly con 

 vex, nearly flat roof, bounded by low, rounded lateral ril>s. The sides are narrow below, widening 

 above, ami ai an angle greater than 90° with the roof, it extends upward fully three-fourths the length 

 of the tergum. nearly to its apex. 



The upper la i era | plate i- irregularly pentagonal, the tergal ami Bcutal margins longest, concave, the 

 apex obtuse, being a little built can on the tergal side of the umbo, which is subterminal. The carinal 

 margin is quite short: the basal, which abuts against the inframedian latus. still shorter. There is no 

 rostrum. 



Tin' rostral lateral plate is small, quadrangular, nearly as high as » ide, with the umbo at the upper 

 angle of its occludenl margin. The inframedian lateral plate is narrow, hourglass-shaped, with the umbo 

 at the lower lifth. where the plate is narrowest Below this is a small triangle and above is a larger one, 

 the upper margin abutting in part mi the upper lateral plate, in part on the scutum, with an angle at the 

 suture between these plates. The carinal lateral plate is quadrangular, very much higher than wide, 

 the un dio slightly recurved and projecting below t he carina. Its carinal margin is longer than the upper 

 lateral plate, about parallel with its lateral margin : basal margin horizontal, upper margin \ cry oblique. 



The peduncle is hardly half as long as the capitulum, covered with wide' short scales, of which there 



are about 9 in any longitudinal row. and about 8 rows. 



Length of capitulum I") mm., breadth 8 mm . diameter :!. I mm. Length of carina. 13 mm. Length 



of peduncle 6.5 mm., diameter :'• mm 



Type. no. :slM22 !'. S. National Museum, from station 1387,32 29'30"N., lis 05' 00" W., vicinity 



of San I liego i 'al 1 .110(1 fat bonis, on an annelid i ube. 



Somewhat related to S, gruA elianum, but quite distinct by the long carina with less strong ribs at its 



angles, the different shape of the scutum, and of all the lower whorl of plates. It stands very mar S. 

 noi;r:i landis Hook, which has a capitulum of the -a me general shape, the valves similarly separated by 



narrow chitinous interspaces, [n S. proximum the occludent margin is more convex; theroofof the 

 carina is apparently greater in width below; the upper lateral plate is obtuse al the apex, not acute as in 

 Hoek's species; the inframedian lateral plate differs in shape: and finally the portions of the carinal 

 lateral projecting below the carina are shorter. S. flavum Hock is also very closelj related, hut 

 differs by the shape of the inframedian and carinal lateral plates. 



.v. jiroi i iii ii iii belongs tea \ cry widelj distributed type of the gen us. ranging probably through all seas. 

 Gruvel has identified £, ice.; . landia from the north Atlantic, taken by the Travailh ur in 2,400 to 2,500 

 meters; and it maj eventually be found expedient to subordinate a number of the allied forms to nova 

 zelandise as subspecies. 



Scalpellum grruvelianum, n. sp. 

 [PI. vii. tig. 1-3.] 



Capitulum compressed, compose. 1 of I:', well-calcified valves, covered with a thin membrane which is 

 sparsely hirsute, especially on and mar the carina. The plates have no sculpture other than low. wide- 

 spaced growth wrinkles. 



Scutum quadrangular, with convex occludent margin, concave tergal, straight lateral ami basal mar 

 L'ins: the umbo is noticeably recurved and projects slightly over the tergum. 



