514 ME. p. n. CAEPENTEE ON NEW 



GreUUS ACTINOMETEA, Milll. 



A. Second and third radials united by syzygy. 



Ten arms, very wide at the base. 



a. Lower joints of the pinnules on the 

 third and some of the following bra- 

 chials haA'e expanded keels 1. Solaris, Lam. 



h. Lower joints of second and third pairs 

 of pinnules not keeled. Arm-bases 

 tubercular 2. robust a, Liitk. 



B. Second and third radials united by ligament. 



Rays divide from 2-5 times. The first 

 division of three joints, the axillary with a 



syzygy- 



a. Only two ray-divisions o. parvicirra, Miill. 



b. Second division of two joints, the 

 axillary with a syzygy. Third division 



like the first 4. rjrmidicalyx. 



c. Second and third divisions of two 



joints, the axillary with a syzygy . . 5. multiradiata, Linn. 



d. Second division like the first. No 



further division 6. Meyeri, n. sp. 



e. Second and subsequent divisions all 



like the first 7. Bennetti,'Mvi^, Leyd. 



1. AcTixoJMETRA soLAEis, Lam., sp.* 



Descrijytion of an IiicUvidual. — Centrodorisal ii thiu peutagouaJ 

 disk, bearing two cirri at each angle. These have 22 or 23 joints, 

 the fourth of whicli is about scpare ; the remainder tolerably 

 equal and longer than broad, the penultimate having a well-marked 

 spine. 



Three radials visible : the second trapezoidal, closely united 

 laterally and widest along the distal edge, Avhere i\\Gj are united 

 by syzygy to the triangular axillaries, which arc more than twice 

 their length. 



Ten arms of 130-1- joints, and only slightly increasing in width 

 from the base. Eirst two brachials joined by syzygy ; the lowest 

 one closely united to its fellow, shorter on the inner than on the 

 outer side, which is only two thirds of the width. The next five 

 or six joints more oblong, wdth their junctions slightly raised 

 alternately on the inner and outer sides. Succeeding joints tri- 

 angular, with convex proximal and concave distal edges, half as 

 long as Avide (nearly 5 mm.), and becoming more quadrate towards 

 the arm-ends. The lower and middle parts of the arms liave a 

 faint, slightly raised, medio-dorsal line. 



* 'The literature of this species will be foimd on p. 192 of ' Notes from tlie 

 Leyden Muvseum,' vol, iii. 



