4:18 TAGIO SKliOSHKUr. 



C. (t. S\i;>, Isc.ii. itilidnid (Kn. Mri.l.ini, ISTI"). ruliinhini iiiul (iKslia/is. (!. S. Hl;\ll^, Is'to 

 probably bt'longoil to this giMup, but, on iurount ol tlif unsatisfactorv descriptions ol these 

 forms, he eoiilil not ijive a definite opinion as to this. Ilihfcndorh. (I. W. !\iri,i.i;i;. 1S!(() would 

 to a certain e.xtent oceup\' a special position. ..II iliji'iiilorji ei'iniu'il duuli die ( I'lii'dcrnrii; der 

 1. Antonne uiul die (J»>stalt der l''uicii an die (duppc nh/iuKja. voii der lrrih( li die h'lirca schoii 

 recht wesentlich abweicht, durch die aHerdings nur spilrliche Bedoinuni; dei- S( liw iMiinl)orslen. 

 die Starke \'erniehrung dor Borsten. besonders dun h die lior.ston am Doisahand der J. Maxille, 

 sowie durch die (Jcstalt des Putzful.5es an die (iru|)pe Lobiancui.'' 



In his work of 18t)7 G. S. BliAD^ sets uj) a new genus. (U/das/.erope, closely related to 

 Aslerope. and diagnosed it as follows (p. 85): ..The .shell is more nearly spherical than is usual 

 in Asteropc. Frontal tentacle stout, 3- (or 2?) jointed. The first joint of the mandibular foot 

 has a falcate masticatory process as in Asterope. but uiuch more elaborately spinous; the second 

 joint, instead of being produced backwards in an angular pincess, bears on its distal margin 

 a large tongue-like appendage which extends as far as the extremity of the following joint. 

 The last limb (vermiform foot) is very profusely armed with setae, many of the segments bearing 

 two or three on each lateral margin. In other respects the anatomy is that of Asterope.'' This 

 new genus was based on investigations of two new forms, C. Hendersoni and C. orbicularis. It 

 is not directly stated which of these two species is to be regarded as typical for this genus; one 

 can, however, read between tiu' lines that the species that is first described in the treatise, 

 C. Hendersoni, is looked upon as the type-species by G. 8. Bl{Al>^. This assumption is fully 

 confirmed in G. S. Brady's work of 1902 a. Here we read (p. 181): ,,This genus was founded on 

 a species taken in Madras Harbour." C. Hendersoni is given (1897, p. 87) as having been 

 ..dredged ... in Madras Harbour"; C. orbicularis is stated to have come from Valparaiso. — 

 In the Work of 1902 a just quoted G. S. Brady describes three new species of the genus Cyd- 

 asterope. At the same time he feels compelled to modify the diagnosis of the genus given in 1897. 

 On p. 181 we read: ,,The shape of the shell can no longer be maintained as a generic character, 

 several other species having been discovered, which with a very different form of shell combine 

 the other distinctive characters of Cyclasterope. The points which I now suggest as diagnostic 

 of the genus are the presence of a digitiform process on the penultimate joint of the mandibular 

 foot, the profusely setiferous character of the vermiform limb, each ring of which toward the 

 distal extremity usually supports two or three setae, and tlie spinous armature of the joints 

 of the swimming-branch of the antenna." 



In his work of 1906 b G. W. MULl.ER adopts the generic name Cyclasterope. At the 

 same time he points out, however, that a differentiation of this genus cannot be carried out on 

 the basis of the diagnosis given by G. S. Brady, partly because the characters given by that 

 author are too indefinite, partly becauseone of themis due to incorrectobservations (the mandible). 

 G. W. MUller then adds, p. 32: ..Trotzdem scheint eine Abgrenzung der sehr kurzen, annahernd 

 kreisformigen Arten, welche bei Brady die Gattung Cyclasterope bilden, nicht unberechtigt. 

 Dieselben charakterisiren sich scharf durch den Bau der Furca, bei der auf 3 oder 4 kurze, 

 kraftige, stark gebogene Dornen, welche in groBerem Abstand von einander stehen, noch eine 

 groBere Anzahl dicht stehender borstenartiger Gebilde, welche sich in ihrer Form scharf von 



