Chap. I. 



SUB-ORDERS OF CTENOPIIORiE. 



181 



is on the right side, and the other on the left side; next to these we have on 

 each side one of the tubes of the first hiteral pair, which may he called the 

 anterior lateral pair; next, on each side, one of the tubes of the second lateral 

 pair, the posterior lateral pair; and, finally, opposite to the anterior pair, on each 

 side, one of the tubes of the posterior pair : so that the two lateral tulles of the 

 same side do not form together one pair, but are each the counterpart of those on 

 the opposite side. (A comparison Avith PI. VII. of my paper in the Mem. of the 

 Amer. Ac. may readily render tliis intelligible. See also the adjoining F/'ffs. 83, 84, 8r5, 



Fiff. 83. 



Fig. 85. 



.-abff 



BOLISA ALATA, Ag. 



(Seen from the broad side.) 



1 and / Long rows of locomotive fringes. — 



g and k Short rows of locomotive fringes. 



— o Central black speck (eye-speck?). — 

 i to m Triangular digestive cavity. — i to o 

 Funnel-like prolongation of the main cav- 

 ity. — V Chymiferous tube of the tenta- 

 cular apparatus. — m Tentacular appa- 

 ratus on the side of the mouth. — r r Ear- 

 like lobe, or auricles, in the prolongation 

 of the short rows of locomotive fringes. 



— 1 1 Prolongation of the vertical chymife- 

 rous tubes. — n n The same tubes turning 

 upwards. — xx Bend of the same tubes. 



— zz Extremity of the same tubes meet- 

 ing with those of the opposite side. — w 

 Recurrent tube anastomoziug with those 

 of the auricles. 



BOLINA ALATA, Ag. 



(Seen from the narrow side.) 

 lb Long rows of locomotive fringes. — c /* 

 Short rows of locomotive fringes. — o Cen- 

 tral black speck (eye speck?). — i Upper 

 end of the digestive cavity. — i to o Fun- 

 nel-like prolongation of the main cavity of 

 the body. — ?/i to i Digestive cavity. — rr 

 Aurit les. — in Mouth. — t t Prolong- 

 ation of the vertical chymiferous tubes. 

 — nn The same turning upwards. — xx 

 Bend of the same tubes. — :: Anastomosis 

 of the two longitudinal tubes 1 1. — w w 

 Recurrent tube, anastomozing with those 

 of the auricles. — A comparison of this fig- 

 ure with Fig. 83 gives a distinct idea of the 

 relative position of the digestive cavity 7n 

 to (, and the chymiferous tubes of the tcn- 

 t.acular apparatus v. 



BOLINA ALATA, Ag. 



(Seen from above.) 

 ' Central black speck (eye speck ?) 

 Long rows of locomotive fringes. — cdgli 

 Short rows of locomotive fringes. — rr 

 Auricles. — .s5 Circumscribed area of the 

 upper end of the body. 



Fig. 



BOLINA ALATA, Ag. 



( Seen from below. ) 

 n .Mouth. — rr Auricles. — ttt t Prolonga- 

 tion of the vertical chymiferous tubes. — 

 z z Anastomosis of these tubes. 



and 86.^) All other Ctenophorte have their ambulacral chymiferous tubes arranged 

 in the same way as in the Mnemiida?, only that their coml)inations are not so readily 



' Fiy. 85, which represents our Bolina from the 

 ahactinal pole, will best explain these relations. 

 The line s s indicating the longitudinal or eadiac 

 diameter, the ambulacral rows a, h, </, and f of 

 one side are the eounterpart.s of those marked b, 

 c, (!., and e of the other side ; « and b being the 

 anterior pair, and f and e the posterior pair ; h 

 and c the anterior lateral pair, and ff and d the 

 posterior lateral pair. Fit/. SG, representing the 

 actinal pole in the same position, shows the con- 

 tinuation of the same rows, or their tubes, on this 



pole. Fif/. S3 represents one side of the animal 

 in profile, but in the same position as Fi(/. 85, .so 

 that the rows ii, li, y, and f alone are visible, 

 which correspond to the rows a, h, g, and / on 

 one side of the coeliac diameter in Fig. 85. Fig. 

 84, finally, represents the anterior surface of the 

 same specimen, so that here the anterior pair of 

 rows a and b, and the anterior lateral pair c and 

 h, are alone visible ; that is to say, the rows on 

 one side of the diacfcliac diameter, corresponding 

 to the rows a and h and c and h of Fig. 85. 



