438 



A^■ATOMICA.L TECHNOLOGY. 



^.— Porta. 



jji. — Pia (mater). 



pes. — Postcommissura, az. 



pen. — Postcornu. Not iu the cat. 



pgn. — Postgeniculatum, (Corpus). 



po. ol, — Pero (olfactorius). 



pobl. — Postoblongata, az. 



pop. — Postopticus (Lobus). 



pn. — Pons (Varolii), az. 



ppd. — Postpedunculus. 



ppf. — Postperforatus (Locus), as. 



^^x.— Portiplexus. 



pre. — Proccelia. 



prea. — Praecommissura, az. 



preu. — ^Prsecomu. 



pren. — Prosencephalon, az. 



pi'gn. — Praegeniculatum. 



proU. — Praeoblongata, az. 



prpd. — Praepedunculus. 



prpf. — Prseperforatus (Locus). 



prpx. — Proplexus. 



prsc. — Prosoccelia, az. 



prspx. — Prosoplexus, az. 



ps. ol. — Pes (olfactorius). 



J't. d. — Portio depressa (praeperforati). 



Pt. p. — Portio prominens (praBperforati). 



py. — Pyramis. 



pse. — Pseudocoelia, az. 



q. — Quadrans. 



r — Rima. 



M. a. — Eecessus aulsB, az. 



B. op. — Eecessus opticus. 



B. prpn. — Eecessus prEepoutUis, as. 



Rg. a. — Eegio aulica, az. 



rhe. — Ehinoccelia. 



rhen. — Rhinencephalon, az. 



rm. — Eostrum, az. 



rp. — Ripa. 



rst. — Restiforme, (Corpus). 



Ex. in. — Radix intermedia. 



Bx. I. — Radix lateralis. 



Bx. mt. — Radix motoria. 



Bx. ms. — Radix mesalis. 



Bx. an. — Radix sensoria. 



s. — Striatum, (Corpus). 



SI. h. — Sulcus habense. 



SI. ic. I. — Sulcus intercruralis lateralis. 



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



SI. li. — Sulcus limitans. 



81. trd. — Sulcus triradiatus, az. 



sp. — Splenium, az. 



Spt. lu. — Septum lucidum (cerebri), az. 



sir. Ing. — Stria longitudinalis (callosi). 



t. — Terma, az. 



Tbel. Bol. — Tuberculum Rolandii. 



T. ein. — Tuber cinereum, az. 



th. — Thalamus. 



Tr. op. — Tractus opticus. 



Tr. prli. — Tractus postrhinalis. 



Tr. rh. — Tractus rhinalis. 



tz. — Trapezium. 



vl. — Velum (interpositum), az. 

 mi. — Vermis, az. 

 m. — Valvula, az. 



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

 fluous elements like eorpus, and the genitives of the nqmes 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 a few cases the old names are wholly discarded for briefer new 

 ones (e. g., eimMa for Traetus transversus pedunculi). Most of the new names, however, 

 refer to parts apparently unobserved hitherto (e. g., erista, earinn, delta), or to parts which 

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

 ■designation (e. g., aida, quadrans, pero). 



For the names of the segments, coelise, telse 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. 



