Reproductive Organs of Spams Centrodontas. 



35 



the likelihood of the mode of development being vivij^arous. In none 

 of the ovaries, however, were any old follicles, egg-capsules, or larvae 

 observed. Holt* says that this species appears to be oviparous. 

 A live nematode was found inside one ovar}'. 



* " Recherches sur la Reproduction des Poissons Osseux." Ann. du Musec 

 iVHistoire Naturclle de Marseille. Zoologie. T. 5. Marseille, 1899. 



LETTERS USED. 



a, an. — Anus, anal. 



ab. — Abdomen. 



o/".- -Artery. 



b V. — Blood- vessel . 



c. — Concretion, cyst. 



ci. — External ciliated edge of scale. 



el. — Clear process. 



col. — Column. 



d. — First portion of gut. 



df. — Dorsal fin. 



dm. — Dorsal mesentei'y. 



e.— Egg. 



f.-Fat. 



/.—Follicle. 



fo. — Foliated surface. 



fr. — Fringe. 



V/.— Gut. 



gl. — Gland. 



gr. — Granular matter. 



gro. — Groove. 



/iff. — Haemal canal. 



hd. — Head. 



iinm. — Unyolked eggs. 



int. — Interspinous bone. 



j. — Junction of oviducts. 



k. — Kidney. 



I. -Left. 



la. — Lacunar tissue. 



lar. — Larva. 



I. ov. — Left ovary. 



I. ovd. — Left oviduct. 



m. — Mesentery. 



inb. — Membrane. 



mo. — Mouth. 



neu. — Neural canal. 



oc. — Eye. 



og. — Oil globule. 



ot. — Otocyst. 

 ov. — Ovary. 

 ovd.- — Oviduct. 

 ovl. — Ovarian lobe. 

 pa. — Urogenital papilla. 

 pap. — Papilla. 

 per. — Peritoneum. 

 2}f. — Pectoral fin. 

 pi. — Pigment. 

 pl. — Placental layer, 

 r.— Right. 

 rd. — Ridge. 

 rect. — Rectum. 

 ri. — Ridged surface. 

 r. ov. — Right ovary. 

 r. ovd. — Right oviduct. 

 sf. — Surface of follicle (Fig. 74). 

 sk. — Skin, 

 sm. e. — Small egg. 

 sp. — Spongy tissue. 

 spc. — Space. 

 sw.-hl. — Swim-bladder, 

 i.— Testis. 

 • ul. — Upper lip. 

 uovd. — LTnited oviduct. 

 ur. — Ureter. 

 urbl. — Urinary bladder. 

 urfr. — Urinary fringe. 

 urth. — Urethra . 

 V. — Vessel. 

 vas. — Vascular layer. 

 V. d. — Vas deferens. 

 vf. — Ventral fin. 

 fm.— Ventral mesentery, 

 tw.— Wall. 

 yk. — Yolked. 



