REPORT ON THE GTRRIPEDIA. 



«::, 



( 1) Umbo of tlic earinal latus much pro- 



jecting beyond the line of the carina. 

 «. Upper latus triangular, . 

 b. Upper latus quadrangular, 



(2) Umbo of tin' earinal latus not much 



projecting, 

 2. Roof of the carina slightly convex laterally. 



(1) ( 'arinal latus very high, 



(2) Carina! latus not very bigh. 



a. Upper latus almost triangular, . 

 Ii. Upper latus rather quadrangular. 



(a) Peduncle short, . 



(b) Peduncle long, 

 (a) Rostrum wanting. 



a. Carina consisting of a roof and distinct sides. 



i. Poof flat, bordered by more or less prominent ridges. 

 (a) Infra-median latus large, wine-glass-shaped, 

 (/3) Infra-median latus middle-sized, oblong-quad- 

 cangular. 



(i) Carina almost straight, . 

 (ii) Carina strongly bowed, . 

 (y) Infra-median latus small, triangular, 

 (8) Infra-median latus narrow, elongate, 

 (i) Scutum almost triangular, 

 (ii) Scutum quadrangular. 



1. Umbo of the earinal latus projecting 



beyond the carina, 



2. Umbo of the earinal latus not pro- 



jecting beyond the carina, 

 (() Infra-median latus large, quadrilateral, . 

 ii. Roof flat, not bordered by distinct ridges, 

 (a) Carina very strongly bowed, 

 (/3) Carina not very strongly bowed. 



(i) Infra-median latus small, triangular, 

 (ii) Infra-median latus elongate, quadrangular, 

 iii. Roof slightly convex laterally, 

 (a) Infra-median latus triangular, 

 (/3) Infra-median latus narrow, 

 (B) 'No distinct roof can be distinguished on the carina. 

 i. Carina! latus as high as the carina, 

 ii. Carinal latus of tbe ordinary height, 



Scal-pi Urn" '•' Illinium, II. Sp. 



Sealpi limn i>iiiitii<-iilnii>iii,\\.>\i. 



.s',v/y» Hum eximium, n. sp. 



Sealpellum giyas, n. sp. 



Sealpi II" in moluccctnum, a. p. 



Sealpellum regium (Wyv. 



Thorns.), n. sp. 

 S ■ ilpt II am ■/■iiirinii, n. sp. 



Sealpellum distinctum, n. sp. 



Sealpellum minutum, n. sp. 

 Sealpellum abyssicola, n. sp. 

 Sealpellum vfoeum, n. sp. 



Scalpt II a m 'planum, n. sp. 



Si-nl/iilliim nn.itraliann, n. sp. 



Sealpi Hum tt mn', n. sp. 

 Sealpellum rutilum, Darwin. 



Sealpi Hum indicum, n. sp. 



Sealpellum ;ril<>iti.<, n. sp. 

 Sealpellum novce-zi landice,n.sj). 



Sealpellum dubium, n. sp. 

 Sealpi II a m flavum, n. sp. 



Sealpi li mil balanoides, n. sp. 



S'ul/ ' II 'i iii triangulan . n. sp. 



A. SPECIES WITH IMPERFECTLY CALCIFIED VALVES. 



Sealpellum marginatum, n. sp. (PI. A I. figs. 5, G). 



Valves thirteen, imperfectly calcified, covered by a chitinous membrane. Carina 

 simply bowed, with the umbo almost at the apex. Upper latus lias the form of a \ . the 

 umbo being placed at the angle of fchc two segments. 



(ZOOL. CHAU,. EXP. — rART XXV. — 1883.) Pb 9 



