REPORT ON THE CIRR1PEDIA. 85 



equal spines at the nearly straight inferior portion of the free edge. Outer maxilla- 

 (PI. IX. fig. 3) with the bristles spread over the whole surface; one tuft, however, may 

 be distinguished near the base on the anterior margin. The maxilla has a large rounded 

 swelling directed forward, and a second smaller one at the hark above the protuberances 

 which bear the olfactory orifices (?) at their extremity. 



The first pair of cirri has very unequal rami. The most anterior one has eight verj 

 broad segments, the posterior ramus has ten much more elongate segments. The surface 

 of the segments is thickly clothed with very slender spines. At the base of the first 

 cirrus the opening of the oviduct (PI. IX. fig. 4, g.o.) is seen. It is placed below a small 

 cover, of which it forms the hinder edge. The oviduct itself forms a swelling at the ex- 

 tremity, and a second even more prominent one a little before the extremity. This latter 

 swelling (PI. IX. fig. 5) contains a rounded bag, which no doubt corresponds to the 

 auditory sac, as Darwin calls it, which in Lepas has the form of a little shoe. 



The caudal appendages are elongate and multiarticulate. Those of the specimen- I 

 investigated were composed of seven segments. 



Eo-o's large, 0'75 mm. in length, oval. The number of ee;gs contained in a specimen 

 is not very large. 



This species was taken at Station 320, February 14, 187G ; hit. 37° 17' S., long. 53° 

 52' W.; depth, 600 fathoms; bottom temperature, 2°"7 C; bottom, hard ground. 



Observations. — This beautiful species is an inhabitant of the southern Atlantic Ocean. 

 It lives attached to a coral of the genus Dendrophyllifr. When complemental males are 

 present, they are found in a considerable number (five or six) at the ordinary place. In 

 shape the complemental male much resembles that of Scalpellwm compressum. However, 

 it is different, in as far as it is enclosed in a very tough, horny membrane, the mantle with 

 the microscopic spines being found under this membrane. 



Scalpellum album, n. sp. (PI. III. figs. 20, 21). 



Valves fourteen, wdiite, smooth, interspaces between the valves broad. Carina simply 

 bowed, with the umbo at the apex. Rostrum oval, rather large. Upper latus quad- 

 rangular, narrow. 



This slender deep-sea species is represented by two specimens, the one probably full- 

 grown, the other a great deal smaller and still young. 



The capitulum is elongate, slender. At its base it has the same breadth as the 

 peduncle, and it reaches its greatest width near the middle of the carina. The surface of 

 the valves is smooth, only here and there chitinous fibres adhering to it. When studied 

 with the microscope, the beautiful striation of the valves distinctly appears. The dif- 

 ferent valves, and especially the scutum, upper latus, and carina, are separated by 



