1862.] MR. W. H. FLOWER ON THE JAVAN LORIS. 103 
Figs. 13-17. Reptilia. LD. §.D. 
L.D.  S.D. | Fig. 16. Proteus anguinus 400 727 
Gymnopodus egyptia- Fig. 17. Lepidosiren an- 
Lihat Soa pe a ae 1,143 2,000 TICCLCNING ..ccccccecccoos 570 941 
Crocodilus acutus ...... 1,231 2,286 Nucleus ...... 1,455 2,900 
Dive.see 8,000 
Lacerta viridis ......... 1,555 2,743 Fi F 
Anguis fragilis ......... 1,178 2,666 igs. 18. Pisces. 
Coluber berus ......... 1,274 1,800 | Perca cernua ............ 2,461 3,000 
Nucleus ...... 3,227 4,986 | The same on edge, T. 8830 
Python tigris............ 1,440 2,400 Nucleus ...... 6,000 8,000 
Nucleus ...... 3,555 7,468 | Cyprinus tinca ......... 2,286 2,722 
Bufo vulgaris............ 1,043 2,000 Dees’ ee 8,830 
Spee ae 5,625 Nucleus ...... 8,500 9,600 
Nucleus ...... 2,802 5,261 | Esoxlucius ............ 2,000 3,555 
Lissotriton punctatus.. 814 1,246 Nucleus ...... 5,333 8,000 
Nucleus ...... 1,778 2,667 | Thymallns vulgaris ... 1,684 2,900 
Fig. 14. Sieboldia maxima 450 800 | Gymnotus electricus... 1,745 2,599 
Fig. 15. Siren lacertina. 420 760 | Squalus acanthias ...... 1,143 1,684 
Nucleus ...... 1,142 2,007 | Ammoccetes branchialis 2,460 
March 11, 1862. 
Dr. Gray, V.P., in the Chair. 
Mr. W. H. Flower, F.R.C.S., F.L.S., Conservator of the Museum 
of the Royal College of Surgeons, read a memoir on the Brain of 
the Javan Loris (Stenops javanicus). 
The subject of this communication was an adult female, which died 
in the Zoological Society’s Gardens in January, 1862. In the exa- 
mination of the brain every care had been taken to preserve the natural 
configuration of the different portions of the organ; the drawing of 
the upper surface had been made before its removal from the cranial 
cavity, and the other drawings, descriptions, and measurements were 
checked by comparison with a cast of the interior of the skull. The 
value of the descriptions and figures of the brain of Stenops already 
published had been much diminished by inattention to such precau- 
tions ; and they had also had the disadvantage of being made before 
the researches of Gratiolet had thrown light upon the arrangement 
of the convolutions on the cerebral hemispheres of the higher Qua- 
drumana. A new description, which may serve as a standard of 
comparison in studying the cerebral anatomy of allied forms, seemed 
therefore to be called for. 
The following is an abstract of Mr. Flower’s remarks :— 
“‘ When seen iz situ, the two hemispheres present together an oval 
figure, 1°3 inch in length, and 1°05 inch across the broadest part, 
which is situated at the junction of the middle and posterior third of 
the long axis. From this point the oval gradually narrows to rather 
a sharp apex in front. There is no appearance of that want of 
symmetry, both of size and form in the two hemispheres, described 
and figured by Vrolik. Projecting anteriorly to the extent of } inch 
beyond the cerebral hemispheres are the olfactory lobes, of consider- 
