442 T\tii: sK»)i:si;KH(i 



.M a M il 1 l> I »•: Tlic I'xopoilitc is rclal i\t'l\' larm". The rndilr ol the lirst |iiutn|)()(lil(' 

 joint has a)m|)aniti\i'l\' miimToiis ami |)nwci'tul MMilial spiiics ami inisllcs. 'i'lic sccdrul [iroto- 

 pndito joint and tlu' second t'lulojtoditc joint liavi' a very almmlani su|i|>i\ ol luistlrs. 



Maxilla: Thoro aiv a inodcratf ihimiIici' df ln'isllcs (l()i-s(i-|iniMina llv (ui tlic hasalc; 

 tlir end joint lias rather nuincrous bristles. 



Sixth 1 i 111 li: Tlu' anterior and ])ostrriiir niarniiis arc concave, the anlerioi- and the 

 posterior ventral corners, seen from th(> side, are jmiiited. 



S e V e n t il 1 i lu li: This has very abundant cleaninjf bristles; there are ot'leii, especially 

 distally, two or three of these on the same side oi the same rinjj;. There are only two em! combs? 



F u re a: This has three or hiur very powerful main claws. l)eliin(l which follows a series 

 of (always rather numerous) bristle-like secondary claws. 



This genus comprises on the whole the same forms as G. \\ . .Mi'i.i-i;i!, 1912 included in 

 the genus Cyclasterope. The following species are probably to be placed in it: 



Asterope americana, G. \V. MClleh, 1890, p. 240, pi. XXV, fig. KJ. j.l. XXVI, fig. 9, 



pi. XXVII, fig. 11. 

 brevis „ „ „ 1891). p. 239. pi. XXV, fig. 10, pi. XXVI, fig. 7, 



pi. XXVIl, figs. 7—10, 15, 16. 



Cyliiidrolehens Lobiancoi, G. \V. MCLLEH, 1894, p. 220, pi. IV, figs. 40, 42, pi. V, figs. 2, 



3, 26, 32, 34, 40. 



Cyclasterope orbicularis, G. S. BliAHV. 1897, p. 87. pi. XV, figs. 13—19. 



ovulum, „ „ ,, 1898, p. 432, pi. XLIII, figs. 24—30. 

 tenera, „ „ „ 1898, p. 433, pi. XLIV, figs. 27—29. 



zealandica*, „ ,, „ 1898, p. 433, pi. XLIII, figs. 15—23. 



Type species: Cycloleberis Lobiancoi (G. W. MOller). 



Divergences from the genus Cyclasterope, G. W. MCLLEH, 1912: 



Species included by this author in Cyclasterope, but not by me in the genus Cycloleberis: 



Cypridina Agassizi, Fh. MCllek, 1870. 



Asterope fusca. G. W. MCller, 1890. 



Species included by lue in Cycloleberis but not by G. W. MCLLEH in Cyclasterope: 



Cyclasterope tenera, G. S. Brauy, 1898. 



The last-mentioned species is placed by G. W. MCller, 1912, under the heading „Cypri- 

 dinidarum genera dubia et species dubiae". It is very incompletely described and the type 

 specimen was presumably far from being mature. In spite of this I think one may put it together 

 with the species on which I have based this genus, without running too great a risk of being 

 mistaken. G. W. MClleh in his work of 1906 b also places C. tenera together with these forms. 



Genus Asteropteron** : — 



Diagnosis: — The shell varies somewhat in form. It is characterized by a very 

 decided sculpture, (always?) with strongly projecting, partly longitudinal, ridges. 



• 1 must leave the qucrslioii finite undecided as tn whellici' this fijiwii is synoEiynmus witli CjiprnUrid zealandica, 

 W. Baiku, 1850 Ij, p. 102, as G. S. Brady assumes. 

 *■* From Asterope and sixtQOv = wing. 



