1<)4 BULLETIN OF THE RITREAU OF FISHERIES. 



Scalpelluin phantasma n. sp. 

 [PI. VI, fig. 1.] 



The lapitiihuii is ovate, roraposed of 13 platos of which only a slender skeleton is calcified. There 

 is MO Miemliranous covering or pilosity. The calcified parts are white, the chitinou.s interspaces creamy 

 j^ray. The occludent margin is strongly and evenly arched in a single curve. 



The calcified portion of the scutum consists of a hand along the occludent margin, widening below, 

 where it is Ijiramose. and a very narrow curved liand along the tergal margin of the plate, diverging 

 V-like from the apex. The umbo is apical. 



The tergum is V-shaped, consisting of a wider band along the occludent margin and a narrower, 

 longer l)and near the carinal margin of the plate. 



The carina is simply arched, with subapical umbo. The roof is a rather narrow gutter between 

 two high, rounded marginal ribs. The sides are very narrow below, widening above, and spreading in 

 a rounded lolje above the nml>o. 



The upper lateral plate is calcified in form of an unequally three-armed swastika, flic short est arm 

 is directed upward, th<' longest obliquely downward and toward the carina, the third arm runs toward 

 the inframcdian lateral plate. The arms are slender, curved, and acute at the ends. 



There is no rostrum. The rostro-lateral plate is biramose, being calcified along the occludent margin, 

 with a slender arm a.scending toward the upper lateral plate and a wider one along the basal margin. 



The iiifralaleral plate has a median undio, a slender a.scending arm, a widening descending portion, 

 and a short arm reaching toward the carina. 



The cari no-lateral plate is L-shaped, with the longer liranch a-scending near the carina and the 

 shorter along the basal margin. The umbo projects below the base of the carina. 



The peduncle is cylindrical, protected by wide, .short scales, not in the least imbricating, i) (jr 10 in 

 any of the 8 longitudinal rows. 



Length of the capitulum 28 mm., breadth 15 mm., diameter 7 mm. Length of the carina 23 mm. 

 Length of the peduncle 8. 5 mm, diameter in the middle 5.5 mm. 



Type, no. 32421 U. S. National Museum, from Albatross station 4397, off Santa Catalina I.slands, 33° 

 10' 15" N., 121° 42' 15" \V.. 2,19(J fathoms, gray mud. A single specimen. 



This peculiar species is perhaps the finest of the "incompletely calcified" forms. It is related by 

 the shape of the carina to S. gmceliamim. Among the imperfectly calcified forms it is most related to 

 5. maiyinatiim Hoek. from north of New Guinea, liut differs from that in the shape of the upper lateral 

 plate, the regular arch of the occludent margin, and other characters. It was taken at a greater depth 

 than other Californian <irripedes. 



Scalpellum larvale, n. sp. 



[PI. VI. fig. 2-6.1 



Capitidum oldong, the occludent and carinal outlines about equally convex, compo.sed of 13 valves 

 which are but partially calcified. Rostrum wanting. Surface not hairy. Umbo of the carina apical. 



The calcified part of the .scutum is shaped like an inverted letter Y, the umbo lieing apical, 

 minute and acute, and (■xlending noticeably over the tergum. 



The calcified portion of the tergum is in the form of an inverti'd V, with the addition of a small ledge 

 on llie carinal sidi' >>! the a|iex. The carinal limb of tlu' V is nnich longer than the occludent. 



The carina is much Letter calcified than the other plates. It is very long, extending about three- 

 fourths the length of tlic tergum, simply arched, the curvature being greater above. The roof is flat, 

 passing rectangularly into the narrow .sides. 



The upper lateral plate is narrow, somewhat lioomerang-shaped. The rostro-lateral plate is narrow. 

 tians\(Tse, with i)arallel upper and basal margins. The inframedian lateral plate is arrowhead-shaped, 

 acute aliove, liiraino.se lielow, small. The carino-lateral plate is calcified in form of an inverted T and 

 is much smaller ilian tlie upper lateral plate. 



The peduncle is v<-ry short, rather sparsely protected by very wide, short scales. It widens slowly 

 from (he base to the capitulum. 



Lengtli of the capilulum 13.3 mm., width 7 mm., diameter 3 mm. Length of the carina 11 mm. 

 Lenglli of (lie peduncle 5 mm., diameter in the middle 2.3 nun. 



The niandililcs (fig. 1, .\i have 4 strong acute teeth and a lower point at the inferior angle. 



