; A'attUe tayUlala 



ACAI.l 



Cymta lajillala. 



. de BUinville remarks that he ought to observe that M. Eschrh >]t / 

 aya that this gemiH, to which he unites the two following genera, 

 poamsee an anterior natatory organ with two cavities, and of these 

 the natatory cavity project* in the form of a tube. M. dc Blainville 

 further obaerrea that thin genus does not differ from the ' 

 except in the form of the natatory organs ; in fact, the disposition of 

 the nucleus in the bottom of the single cavity into which the anterior 

 organ i* hollowed, and the penetration of the posterior organ into this 

 name cavity are absolutely the same as in the two preceding genera, 

 aaM.de Blainville has been able to satisfy himself from the examina- 

 tion of many individuals preserved in spirit 



4. Cubuida. 



Body nucleiform, provided with a largo proboscidiform sucker, 



surrounded by an 

 hepatic mans, having 

 at its base an m ;n-y. 

 whence proceeds a fili- 

 form ovigcrous produc- 

 liuii, contained in a 

 large, single, hemisphe- 

 rical excavation of an 

 anterior, cuboid, nata- 

 tory organ, nmrh 

 larger than the pos- 

 terior one, which is 

 tetragonal, and nearly 

 entirely hidden in the 

 first. 

 Example, Cubotdet ritreiu (Quoy and Gaimard). Locality, Strait* 



c.f Gibraltar. 



This again, according to M. do Blainville, is a genus scarcely 



distinguishable from the preceding genera, and only by the form and 



proportion of the natatory organs. 



6. Enneagona. 



Body nucleiform, provided with a large exsortile sucker, having at 

 its base an assemblage of ovaries, whence proceeds an ovitVnm* pro- 

 duction. Anterior natatory organ cnnragnnal, containing with the 

 nucleus in a single (?) excavation the posterior organ, which in much 

 ninaller, with five points, and canaliculated below. 



Example, Enneagona Ityalina (Quoy and Gaimard). 



Oulxj'iiln rilieia. 

 a, natural size ; b, magnified. 



1 a 



) I 



1 



F.nnrngttna hynliua. 

 Ayafuia under different aspects ; 1 r, visceral part ; 



1 , 1 a, 1 t, 

 1 d, nucleus. 



. . 



Body nucleiform, of considerable volume, furnished with ft probog 

 r-idiform stomach, having at its bane a bnm-li of ovaries, prolonged 

 1 in an ant.-rior. polygonal, liort, natatory 



organ, cut squarely, with a single cavity in wliii-h the posterior organ, 

 which is equally short, ]x>lygnal, and tninciitod, is inserted. 

 Example, Ampkiroa alaia (Lesueur). Locality, Seas of Bahama. 



ft. 

 I>.iJ<yda whose anterior part is furnished with two distinct cavities. 



1. C- 



Body nucleifonn, without an exsertile proboacis, having a sort 

 of acriferous vesicle, and at it* base an ovary (I) prolonged into a 

 long cirrbigerous and ovifennm pr'ln< -timi. Anterior natatory 

 organ short, cuboid, having B ill '"interior 



natatory organ very long, truncated at the two extremities, not 



penetrating into the anterior organ, and provided with a nnm<l 

 . rota i! ] rtor* 



Example, Calpt pentagoua (Quoy and Gaimard). Locality, Strait* 

 of Gibraltar! 



Ampkiroa alula. 

 1, 1 a, Amphiroa alaia ; 1 4, its nucleus ciii 



1 I 



Calpt ptntagona. 

 1, Cat ft pcntagona (prc81e) ; 1 a (under tide) ; 1 i, nucleus. 



2. Abyla. 



Body nucleifonif inconsiderable, with a very long cirrhigermis and 

 oviferous production. Anterior natatory b.uly nun-h slmrt<<r than tin- 

 other, subcuboM, with :i distinct ravity I'M; n ,.( tin- anterior 

 extremity of the posterior natatory body, wliiili is polygonal and 

 very long. 



Example, Alyla trigona (Quoy and Gaimard). L. uts of 



OibnHar. 



Alyla trigona. 

 1, Alyla trigona ; 1 a, posterior part ; 1 b, anterior or visceral part. 



3. fiijiliyet. 



Body micleiforin, inilistiiu-l, sltuaUil in the bottom of a d--p oa\ ity. 

 whence proceeds a lotij: tubular pi-. durtion. fumislnil throngnoiit iu 

 extent with proboscidiform Hiiukn-M, liavin^ at tln-ir root granular 

 ! mid a cirrhifi-i-ous filaiin nt. Natatory bodlaf naan] i-i|iial 

 ami Kitnilar; the anterior with tw., tlie posterior with 



a single one, with a round : 'l" I'tnn- |imvidi-d with U-eth. 



Examph', Hij-liyci Bury (Quoy and Gaimard) ; Dijtligu cnmjtanulifira 

 (Eschch..ltx). 



Doubtful species, Ot thoae with one part only. 



1. Pyramit. 



Body frco, gelatinous, crystalliiK . : |i\niini.1al, t.-tnigonal, 



with four uiTOjual angles, pointed at the summit, truncated at its base, 



