62 VERRILL 



larly diplacanthid, crowded; sucker- feet numerous, crowded in 

 four rows. Large, denticulate, dermal major pedicellariae often 

 present in adult. Eggs and young carried by mother. Papulae 

 often in dorsal clusters of five to twelve or more. 

 L. epichlora (Br.), p. 132. Calif, to Aleutian Is. 



a. Rays commonly five; dorsal spines very numerous, very unequal, strongly 



capitate, acervate. Median row not very evident 

 Var. subnodulosa Ver., nov., p. 139. Wrangel, Alaska. 

 aa. Rays normally six. 



b. Superomarginal spines stand two or three, or sometimes more, to a plate. 



c. Dorsal spines quite unequal in size, mostly capitate; arrangement mostly 



areolated or reticulated. 



d. Dorsal spines do not form a very evident median row, and are not notably 



acervate; reticulate arrangement conspicuous; larger ones capitate. 

 Large denticulate dermal pedicellariae often present, as well as the 

 usual form ; minor sort abundant 



Subspecies alaskensis Ver., nov., p. 136. Puget Sd. to Aleutian Is. 

 dd. Dorsal spines form an evident median row or band of larger spines. 



e. Dorsal spines numerous, mostly clavate, not crowded, reticulate, with the 



median radial row very evident. 

 Var. carinella Ver., nov., p. 137. Alaska. 



ee. Median radial dorsal spines decidedly larger, capitate, others small, 



crowded, reticulate and areolate. 

 Var. siderea Ver., nov., p. 137. Puget Sd. to Aleutian Is. 



eee. Sometimes five-rayed. Dorsal spines crowded, very small, slender, cla- 

 vate or slightly capitate; several small ones around each larger; 

 median ones slightly larger; superomarginals unequal, one larger 

 and several smaller on a plate. 

 Subspecies miliaris Ver., nov., p. 138. Alaska. 



cc. Dorsal spines, mostly equal or subequal, short, capitate, numerous, 

 crowded, areolate, often forming circles around the papular areas. 



1 Dorsal spines are in five or more evident radial bands separated by rows of 

 large papular areas, several spines standing on each of the larger 

 ossicles, median band evident, but not prominent; three to four or 

 more spines on each superomarginal plate; two on inferomarginals, 

 stouter; one on peractinal, stout, clavate. Papular areas large. No 

 large pedicellariae on type. 

 Subspecies plena Ver., nov., p. 140. British Columbia. 



ff . Dorsal spines very even, stout, capitate, crowdedly areolate, but not forming 

 evident radial rows ; median row irregular or obscure ; papular areas 

 conspicuous, but not in evident radial rows; mostly three spines 

 on superomarginal plates; two on inferomarginals, all similar and 

 near together, clavate, larger and longer than dorsals; peractinals 

 similar. Large, erect, serrate major pedicellariae common between 

 marginal rows of spines. 

 Subspecies pugetana Ver., nov., p. 142. Puget Sd. 



bb. Superomarginal spines mostly stand singly on the plates. A distinct 

 dorsal median row. 



