PAUEOTROPUS JOSEPHIN/E. 



53 



rac h genera a* Bemiaster, Rhinobrissus, Linthia, Schizaster, etc., on the one 

 8ide . and on the other, in such genera as Paleopnenstes, Maretia, Lino- 



pneiLtes, Homolampas, etc., we find the mor ■ less rudimentary lateral 



Lciole plainly developed from the anal or branches of the snbanal fas- 



ciole, or independently. 



This corresponds fairly well with the two series we find among the fossil 



[none ofwhich ,i„. lateral fascicle is the appendage ol the peri- 



petalous fascicle, and in the other of the fascicle of the anal system, or has 



Li— entirely independently as an ambital lateral fascicle, rf 1 may so 



call it. 



Palaeotropus Josephinae Lovto. 



Off Havana, Lesser Antilles. 82-242 fathoms. 



Stations, see Bull.M.C.Z, VIII., No. 2, p. 81, 1880. 



PL XXIII. Figs. 5-11 

 isma U specimen 10 mm. long did not differ from that figured by Loven 

 m xill Fio-s 108-113, Etudes sur les EcJunoidSes). Older specimens meas- 

 ure 23 mm. in length, figured on Plate XXIII., are comparatively less 

 .lobular and more flattened, but otherwise do not vary greatly in appearance 



from the younger S] i », [n the Preliminary Report * on this collection 



I l ia ,l referred a few larger Spatangoids to this s, ies; but on denuding 



t!l( . m from spines I find that they have nothing in common with Paheotro 

 pua and they a,-, described in this Report as belonging to a new genus 

 (PaLobrissus) intermediate between Platybrissus and Argopatagus 



The test of this q ies is comparatively bare (PI. XXIII. F.gs. 5-11), car- 



.ying but few primary spines; tl are generally straight, with a smoo* 



^ only a few of tl r 3 largest spines being shghty serrated. Th 



miliaries and . ndaries are more , , , ge ^***^ *j£ 



extremity, often curved, and many of them with serrated shafts Che m x 



^tubercles of the anal fascicle carry comparatively long, slender, slightly 

 club-shaped spines. 



T loringof 11 si i rtsisofag, -I let - * e w1 "' 



bebgirregdarly covered with distant dark violel pigment-epota. W.th m- 



,., Lge^tbeaea, b. lea, ■ atratagmarfyal ■ 



the base of tin' primary spines. 



:i. m.c. Z., Vlll., No. 2, p. 81 



