34 



ATLAS OF BIOLOGY. 



<jr.. Germinal spots. 



ij.r. Germinal vesicle. 



A. Heart. 



fi.d. Hypodermis. 



lt.fl. Hind gut. 



li/i. Hepatic artery. 



li.pc. Digestive gland (so-called liver). 



hy. Hypoblast. 



i. Intestine. 



i.a. Inferior abdominal artery. 



i*. Ischiopodite. 



ijt. Intersternal membrane. 



i.t. Intertergal membrane. 



///. Labrum. 



l.b. Lenticular bodies. 



I.e. Liver cells. 



l.ij. Levator muscles of stomach. 



I.t'. Lateral tooth. 



/./." Accessory lateral tooth. 



l.r. Levator abdominis muscle. 



HI. Mouth. 



ml'. Mesoblast cells. 



mil. Mandible. 



me, Meropodite. 



in. i/. Midgut. 



in. HI. Mandibular muscles. 



in.f>i>. Muscles of eye-stalk. 



in. I'. Mandibular palp. 



in. /i)>. Membrana propria. 



mt, Metastoma. 



m.t. Median tooth. 



m.r 1-2. Maxillae 1 and 2. 



mxp 1-8 Maxillipedes 1 to 8. 



ii.au. Auditory nerve. 



tic. Nucleus. 



.//. Ganglionic nerves. 



n.iij, Interganglionic nerves. 



'it.n/i. Optic nerve. 



n.v'. Anterior visceral nerve. 



11. r". Posterior visceral nerve. 



i).r. Ovicell. 



<>.<!. Ovary duct. 



o.d'. Cut edge of the same. 



a. (Esophagus. 



ol. " Olfactory " setae. 



<i/i. Ophthalmic artery. 



<i,x'. Ovisac, ripe. 



u.x". Ovisac, young. 



<>t. Otoliths. 



or'. Ovary, anterior lobe. 



or". Ovary, posterior lobe. 



p. Pericardial sinus. 



l>.li. Pleurobranchia. 



p.b'. Rudimentary pleurobranchia. 



pc. Ferment cells. 



pc'. Secretionary product of the same. 



p.c. Procephalic process. 



p.ca. Pore canals. 



1>.ij, Posterior gastric muscles. 



}il. Pleuron. 



pr. Propodite. 



pt. Protopodite. 



pi/. Pyloric chamber. 



pi/'. Dorsal pyloric ossicle. 



py". Median pyloric ossicle. 



py.l. Lateral pyloric ossicle. 



r. Rectum. 



re. Green gland. 



re,'. Vestibule of the same. 



. Stomach. 



.f.a. Superior abdominal artery. 



se. Setae. 



xif. Scaphognathite. 



x..i. Sternal sinus. 



s..s-//. Striated spindle. 



nt. Sternal artery. 



at 1-20. Sterna 1 to 20. 



sir. Swimmerets. 



t. Telson. 



t.f. Tail fin. 



i<j 1-20. Terga 1 to 20. 



tli.n. Thoraco-abdominal linkwork. 



tx. Testis, anterior lobe. 



ta' 1 . Testis, posterior lobe. 



v'. Dorsal valves of heart. 



r". Ventral valves of heart. 



r'". Lateral valves of heart. 



ivy/ . Lateral cardio-pyloric valve. 



r.rp". Median cardio-pyloric valve. 



v.d. Vas deferens. 



v.p. Valvular termination of lining of fore-gut. 



y. Food yolk. 



i. to xx. Appendages i. to xx. 



i'.toxx'. Articulations for the same. 



1. to 20. Segments 1 to 20. 



