LSTBBOIDBA 01 NOBIS PACD1I 1ND IDJACSN1 WATERS nSHJ 171 



miim(M hum 1 1 - >i '.si-, rukw 



Pit 3 1 



Pitai ttgnii Kuweit. Ann. Man N 



Diagnotit. Differing from typical ochraccw in bavii 

 Btraight pedicellariae and conspicuously largci pedicellariae Type R 



mm . r H iiiiii. ; I \ Calil R 124 mm., r 35 mm 



Description,— This i- the southern California repreaentati 

 ochract u and it parallels exactly I ptfpanJMU eapitofiM, %v 1 1 1 I 



■ ,1 pedicellariae and much fewer furcate pedicellariae than its northern relal 

 Both forma ochraeeus and aodt/eru* extend contin ithern Ca 



the latter apparentlj predominating at Laguna Beach, Orange County Thediffer- 

 umerated in the diagnosis apply to l>"tli formae 

 The type of irresponds t" forma ochract us but there is a 1 vard 



m the arrangement "f Bpines on the ilf of the i ly. E >m- 



parable specimens are common at Monterey. In general appearance there are no 

 Hintingniahing features, until the small pedicellariae are closely scrutinized, when the 

 scarcity of tlit> furcate sort, so numerous in northern specimens, !>• 

 Tin' dentate Btone-hammer pedicellariae are nol very large, nor very numerou 

 proximally in the interradial channel. There are li\'- or six actinaJ spines in a tra 

 iee, m addition in tlir two inferomarginals. 

 All nf the seven specimens from Laguna Beach are well developed forma 

 m perhaps more properly BpeaMng the southern Bubforms of thi" These specimens 

 liu\ , ibglobular Bpines I pi. 75, tL r . 6 1 in \ ery com ex groups, with « ide generally 



spineless intervals between. Superficially there is little t" distinguish them from the 

 Ton imen of which has unusually heavy tuber hern 



have heavier tubercles than Monterey specimens "f forma They 



; il to iIk- heavier spined form of Pisaster I Lried 



inn- from Laguna Beach, as well as a similar one from Vei f., have 



■ f "minor" pedicellariae than comparable examples from M 

 to Alaska, Bince in aouthern specimens the furcate pedicellai important 



northern examples, are rather scarce. On this account the spai 

 appear !<•<- well armed, although the individua 

 larger. This feature will Hinringiiiah the southern specimens from the 

 exampli - fig l which was unusually heavy tubercles The Btone-ham 



pedicellariae ler than in the type specimen; about as in I 



uonally even a little broader. Small, undifferentiated lai iriae 



ur. 



ued pedicellariae: A- in typical a i difference i d tin- 



two formae Tj pe, length of well-developed ped 

 Beach, 0.36 to il mm. l'l 73, fig i. compare with fig. •'>. Ton \ 



i omparable specimens of form-, 

 mm . forma 6 mm. 



Furcate Btraight pedicellariae pi a diameter 



or n 29 mm. The form of the blade type bdc imen is rather nearer that of northern 



