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NEW YORK STATE MUSEUM 



transverse lines are visible which suggest a segmentation of the 

 same corresponding to that of the branchlets. The branchlets of 



Callithamnopsis fr u t i c o s a Whitfield 

 Fig. 4-6 Type specimens, x 3. 



Fig. 7 Articulation of branchlets, further enlarged 

 Fig. 8 Terminal branchlets. (Copies from Whitfield) 



the first order are always arranged in pairs. Their base is some- 

 what swollen and also articulates with the main branch. The 

 branchlets of the first order are long and slender. They bear 

 a whorl of four or more shorter branchlets of the second order 

 and each of these again four (or more) short bulbous termi- 

 nal branchlets in the specimen figured. In others these are again 

 seen to grow out to branchlets of the length of those of the 

 preceding order. No traces of fructification could be found.. 



The habit of C. fruticosa is clearly algal and there are a 

 number of recent genera, especially among the Florideae, with 

 which it could be readily compared in this respect. Its branching 

 is verticillate in the distal parts and therefore invites comparison 

 rather with forms other than Callithamnion which is typically 

 represented by bifurcating forms. The mode of branching and 

 general structure is so much like that of the preceding genus, 

 Primicorallina, that Callithamnopsis could be considered as a closely 

 related form lacking the incrustation of carbonate of lime. 



