A MONOGRAPH OF THE EXISTING CRINOIDS 305 



are visible and are followed by the two ossicles of the IBr series) and the next division 

 consists of three ossicles of which the third is axillary with a syzygy (that is, the IIBr 

 series are 4 [3 + 4]). 



Carpenter in the Challenger report mentioned reynaudi as having all the outer 

 arm divisions of two segments only, the axillaries being syzygial segments (that is, 

 the outer arm divisions are 3 [2 +3]). At the time this was written he had evidently 

 confused the type specimen of reynaudi with a specimen of Capillaster mvltiradiata 

 from Trinquemale, Ceylon, which was also collected by M. Reynaud in 1829 (see 

 Part 3, pp. 197, 204, 205). Farther on in the Challenger report, however, he cor- 

 rectly placed reynaudi in the Savignyi group and assigned to it the following characters. 

 The IIBr series are 4(3+4). The cirri, which are without definite arrangement, have 

 not more than 45 segments. The distal (that is, distichal, or IIBr) pinnule is generally 

 smaller than its successors. The segments of the lower pinnules are without lateral 

 processes. There are 40-45 cirrus segments which are mostly spiny. The distal 

 intersyzygial interval is usually from 8 to 11 muscular articulations. 



In 1910 I examined Miiller's type specimen at Paris. There are 41-44 cirrus 

 segments, which are subequal, all being about twice as broad as long. There are 19 

 arms, nine IIBr 4(3+4) series being present. The brachials are slightly overlapping. 



Dr. Hubert Lyman Clark says that of the 55 specimens sent to him for study by 

 the Colombo Museum three are noticeably larger than the rest with longer arms. 



Of the four specimens collected by the Investigator south of Ceylon in 62 meters 

 two are of medium size and one is small. The fourth is curiously abnormal (see 

 page 307). 



Of the two specimens collected by the Investigator south of Ceylon in 58 meters 

 one has the cirri XIII, 24-28, and the other, with 12 arms, has the cirri XII, 21-27. 



One of the 10 specimens from the entrance to Palk Strait has 14 arms, four IIBr 

 4(3+4) series being present. Another has 16 arms; of the six IIBr series present 

 five are 4(3+4) and one is 2. Two have 20 arms with eight of the 10 IIBr series 

 4(3+4) and two 2. One has 20 arms with seven of the ten IIBr series 4(3+4) and 

 three 2. One has 21 arms, with all the IIBr series 4(3+4) and all the IIIBr series, 

 which are internally developed, 2. The remaining four are badly broken. 



One of the four specimens from Palk Strait has 20 arms about 110 mm. long and 

 the cirri XXV, 34-40, from 25 to 27 mm. long. Another has 21 arms (one IIIBr 

 series being present) and the cirri XXI, 33-42. A third has 22 arms (with two IIIBr 

 series both internally developed). The fourth has 20 arms, one of the IIBr series 

 being absent but its loss being compensated by the development of one IIIBr series 

 which, however, is 4(3 + 4) instead of the usual 2. 



The specimen from Investigator station 90 is medium sized. That from the 

 Ganjam coast in 44-55 meters is small with 12 arms. 



Of the five specimens from off Gopalpore in 46-51 meters one has 14 arms 80 

 mm. long; of the four IIBr series three are 4(3+4) and the fourth is 2. The cirri 

 have 34-41 segments. The color is white, with the articulations banded with purple; 

 the cirri are white with the distal portion purple dorsally. 



Three of the specimens have each 17 arms 80 mm. long; in all these three there are 

 seven IIBr series. One has all seven of the IIBr series 4(3 + 4). The cirri have 31 

 segments. The color is white with a row of small brown spots, in pairs, on the sides 



