316 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



There were at least 15 arms. The first syzygy is usually between brachials 3+4 

 as in the type specimen, and the second is far distant, from between brachials 13 + 14 to 

 between brachials 24+25. 



As in the type specimen, PI is the longest with about 18 segments of which the 

 basal three or four are broad and keeled, those following always short, becoming 

 gradually narrower. The three basal segments of the following pinnules up to P 3 are 

 also broad and carinate. The short and stout pinnules from the middle of the arm have 

 mostly 8 segments of which the two basal are broad and those following elongate. 

 Toward the end of the arms the pinnules appear to become somewhat longer again. 

 The individual brachials are emphasized by broad and deep-lying articulations, which 

 give the arms a characteristic appearance. 



Another somewhat larger individual from Blake station 269, which has only a single 

 arm preserved beyond the base, has an estimated arm length of 65 mm. In essentials 

 it agrees with the preceding. The ornamentation of the centrodorsal and of the 

 division series is in close agreement. The radials are not visible. The IIBr series are 2, 

 and a single IIIBr 2 series is present. The first syzygy is between brachials 3+4, and 

 the proximal three or four segments of Pj, which hi no case is preserved entire, are in 

 this specimen also broad and carinate. 



Localities. Cormn station 2; Blake stations 232, 269; off St. Thomas. 



Geographical range. From northern Cuba to St. Vincent. 



Bathymetrical range. From 159 to 494 meters. 



Thermal range From 14.17 to 16.67 C. 



Remarks. The var. brevipinna has no real validity in fact. Pourtales' type spec- 

 imen and the specimens described by Hartlaub are young individuals in which the 

 varietal characters have not as yet become distinctive. Pourtales' type specimen is 

 probably simply a young individual of var. granulifera, and the specimens from Blake 

 stations 269 and 232 appear to be young individuals of var. insculpta. 



CRINOMETRA BREVIPINNA Tar. SPINO9A (Hartlanb) 



Antedon brevipinna var. spinosa HARTLAUB, Mem. Mus. Comp. Zool., vol. 27, No. 4, 1912, p. 323 (in 

 key), p. 343 (description; no locality), pi. 11, fig. 8. 



Description.- Hartlaub said that a rather small specimen from an unknown locality 

 with the arms about 70 mm. long forms in regard to its ornamentation uniformly 

 distributed spines an exceedingly interesting parallel to the second Martinique speci- 

 men of what he considered to be granulifera (see page 326). To Hartlaub it seemed 

 that this specimen represented a transition to granulifera, although it shows various 

 differences. 



In particular the centrodorsal is markedly flatter than the more hemispherical 

 centrodorsal of the specimen of granulifera. Like most specimens of brevipinna it pos- 

 sesses a typical flattened bare dorsal pole, which is uneven. No interradial ridges are 

 present, but there are prominent interradial processes. 



The cirri are XXII, 14-16; an opposing spine is present. 



The radials are flat, obscured, though entirely visible. In the specimen of granuli- 

 fera mentioned the radials are clearly visible. In both specimens there are narrow sub- 

 radial clefts. The IBri are also flat; the IBr 2 (axillaries) are pentagonal, not especially 



