VerriU, Notes on Had lata. 421 



The large, rounded, unequal, eight-rayed verrucas are sufficient to 

 distinguish this from all other known species. Two specimens only 

 were obtained. 

 Muricea tubigera VcrriU, sp. nov. 



Plate VII, figure 7. Plate VIII, figure 2. 

 Corallum stout and rigid, dichotomously branched, Avith greatly 

 elongated, squarrose verructe. The trunk divides at about ant inch 

 from the base into two main branches, wdiich fork at about an inch 

 from their origin. The secondary branches usually fork again at dis- 

 tances varying from two to five inches, and the tertiary branches are 

 often again divided. The terminal branches are from 1-5 to 2*5 

 inches long and nearly as large as the main branches ('4 inch), 

 obtusely roiinded, and sometimes a little enlarged or clavate at the 

 ends. The branches are but little divergent and fonn acute angles. 

 The coenenchyma is only moderately thick, but is crowdedly covered 

 with very long, rather slender verrucse, which stand nearly at right 

 angles to the surface and give the branches a thick appearance. The 

 verrucas are enlarged or clavate at their summits, which are rounded 

 and conspicuously eight-rayed in contraction ; their sides covered 

 with closely imbricated, long, rather slender and sliarp spicula, which 

 project but little from the surface. At the tips of the branches the 

 verrucas are smaller and densely crowded. Axis horn-like, light 

 wood-brown at base, black and somewhat compressed in the branches. 

 Color light greenish brown when dried. 



Height of the largest specimen 8 inches ; breadth 4*5 ; diameter of 

 main branches, including verrucae, '50 ; of branchlets "40 to '45 ; 

 length of verrucae '15 to '20; diameter '05; their summits "08. 



The spicida are yellowish white, and similar to those of the pre- 

 ceding species, but longer, more slender, sharper at the ends, and 

 visually with less crowded warts and spinules. The spindles of the 

 cells are not larger than those of the coenenchyma, but often stouter ; 

 the latter are mostly very slender and acute, often larger and blunter 

 on one end than the other, or somewhat club-shaped, the spinules 

 being more crowded on the larger end and mostly truncate, while on 

 the small end, which is long, slender and acute, they are sharp, conical, 

 and distantly scattered. 



The longer spindles of the cells measure 2-28""" by -324, 1-36 by 

 •182, 1-32 by -152, 1-29 by '137, -851 by '091, '608 by -061 ; the stouter 

 ones 1-36 by -228, -988 by '187, -699 by -121 ; the small irregular ones 

 •213 by -071, -187 by '106, -121 by -061 ; heads -076 by -076; the 

 longer spindles of the coenenchyma measure 2*37 by '325, 1-80 by 



