438 



ANATOMICAL TECHNOLOGY. 



p.— Porta. 



pi. — Pia (mater). 



pes. — Postcommissura, az. 



pcu. — Postcornu. Not in the cat. 



pgn. — Postgeniculatum, (Corpus). 



po. ol, — Pero (olfactorius). 



pop. — Postopticus, (Lobus). 



pn. — Pons (Varolii), az. 



ppd. — Postpedunculus. 



ppf. — Postperforatus, (Locus), az. 



ppx. — Portiplexus. 



pic. — Procoelia. 



prcs. — Praecommissura, az. 



prcu. —Pnecoinn. 



prea. — Prosencephalon, az. 



prgn. — Praegeniculatum. 



prpd. — Praepedunculus. 



prpf. — Praeperforatus, (Locus). 



prpx. — Proplexus. 



ps. ol. — Pes (olfactorius). 



Pt. d. — Portio depressa (praeperforati). 



Pt. den. — Portio diencephalica (cruris cer- 



ehri). 

 Pt. msen. — Portio mesencephalica (cruris 



cerebri). 

 Pt. p. — Portio prominens (praeperforati). 

 py. — Pyramis. 

 psc. — Pseudocoelia, az. 



q — Quadrans. 



r — Rima. 



R. a. — Recessus aulas, az. 



R. op. — Recessus opticus. 



R.prpn. — Recessus prsepontilis, az. 



Rg. a. — Regio aulica, az. 



rhc. — Rhinocoelia. 



rhen. — Rhinencephalon, az. 



rm. — Rostrum, az. 



rp. — Ripa. 



rst. — Restiforme, (Corpus). 



Rx. in. — Radix intermedia. 



Rx. I. — Radix lateralis. 



Bx. int. — Radix motoria. 



Rx. ma. — Radix mesalis. 



Rx. sn. — Radix sensoria. 



s. — Striatum, (Corpus). 



81. h. — Sulcus habense. 



81. ic. I. — Sulcus intercruralis lateralis. 



8. ic. ms. — Sulcus intercruralis mesalis, az. 



81. li. — Sulcus limitans. 



SI. trd. — Sulcus triradiatus, az. 



sp. — Splenium, az. 



8pt. lu. — Septum lucidum (cerebri), az. 



str. Ing. — Stria longitudinalis (callosi). 



t. — Terma, az. 



Tbcl. Rol. — Tuberculum Rolandii. 



T. cin. — Tuber cinereum, az. 



th. — Thalamus. 



TV. op. — Tractus opticus. 



Tr. prh- — Tractus postrhinalis. 



Tr. rh. — Tractus rhinalis. 



tz. — Trapezium. 



■d. — Velum (interpositum), az. 

 vm. — Vermis, az. 

 TO.— Valvula, az,. 



§ 1129. Most of the above names are those in common use, with the omission of super- 

 fluous elements like corpus, and the genitives of the names of more comprehensive parts. 

 Most of the apparently new names will be found to be old acquaintances under such thin 

 disguises as translation, transposition, abridgement, and the substitution of prefixes for 

 qualifying words. In » few cases the old names are wholly discarded for briefer new 

 ones (e. g., cirribia for Tractus transversits pedunculi). Most of the new names, however, 

 refer to parts apparently unobserved hitherto (e. g., crista, cfi,rina, delta), or to parts which 

 — although probably observed — seem not to have been regarded as needing a special 

 designation (e. g., avla, quadrans, pero). 



For the names of the segments, ccelis, telae and plexuses, see § 1063. 



So much of each name as immediately follows the abbreviation is regarded as a suffi- 

 cient designation of the part under ordinary circumstances ; sometimes it may be necessary 

 to add the words in parenthesis. 



The names are tabulated according to segments in § 1138. 



