lO 



Stat. 12. 7° 15' S., ii5°i5'.6E. 289 m. i Ex. 

 Stat. 256. s°26'.6S., i32°32'.5E. 397 m. 3 Ex. 



The Challenger specimens were dredged off the Kei Islands, on almost the exact spot 

 of Siboga Station 256. 



7. Caryophylla qiiadragcnaria n. sp. Plate I. Fig. 4, i,a. 



Stat. 90. 1° 17'.$ N., 118° 53' E. 281 to 54 m. i Ex. 

 Stat. 251. 5°28'.4S., 1 32° 0.2' E. 204 m. i Ex. 

 Stat. 289. 9° o'.3 S., I26°24'.5E. 112 m. i Ex. 



Allied to C. cyliiidracea Reuss, C. abyssoruvi Duncan and C. antillai'inii Pourtales. 

 Corallum rather elongate, little compressed, gradually and elegantly expanding from a 

 curved, very short, rather slender cylindrical peduncle with an incrusting base 



The costse, whose granular surface is glazed over by a thin vitreous epitheca, are equal; 

 they are very distinct at the calicular orifice, and thence gradually become less salient until they 

 are lost on the pedicle. 



Septa exsert, 40 in number, arranged with perfect regularity in what appears to be 



Jive systems of four complete cycles; their surfaces are finely denticulate, and their edges inside 



the calicular fossa are wavy. Those of the first two cycles, which are equal, are much the 



largest and most exsert, dividing the calicle into ten perfectly equal compartments; those ot 



the fourth cycle are a little larger and a good deal more exsert than those of the third. 



Pali 10 in number, opposite the septa of the third cycle: they have the form of large 

 upstanding curls, just like the ringlets that compose the columella of most CaryophylIi;e. 

 Columella large, rather deep-seated, made up of numerous cincinni. 



The thecal wall is stained with purple-brown near the calicular margin, beyond which 

 it has a striated appearance owing to the costae being alternately darker and lighter. 



Greatest height of corallum 15 millim. 

 Major diameter of calicle 10 „ 

 Minor „ „ „ 8 



Another specimen of this species was dredged in 112 metres water at station 289. 



II. Ceratotrochus Edw. & H., Duncan. 



The collection contains three species which may be referred to this genus. One of them, 

 from Station 102, is represented by broken specimens to which I am reluctant to give a name 

 that may be a stumbling-block to future systematists ; while another, from Station 159, is a 

 mere relic which has even less right to a specific name, for it might equally well be regarded 

 as a worn and weathered Trochocyatlijis. 



8. Ceratotrochus vemistus n. sp. Plate I. Fig. 5, ■^a. 



Stat. 256. 5°26'.6S., 1 32° 32'.$ E. 397 m. i Ex. 

 The corallum is unattached, acutely conical, straight, a little compressed, thick-walled. 



