KJO Mr. ,r. L. lioiiliote on the S(2uirrels 



'Vhc. type specimens have been placed in the Biitish Maseum 

 (Natural History). 



EXPLANATION OF PLATE III. 



Fi(/. 1. Hi/perammiiKi I'amosissiina, sp. n. X 15 diaiu. 



Fiff. '2. Stavheia stumatifvra, sp. n. X 10 dia-n. 



I ig. 3. Si/rimjopora serpPHS tlAnwi). Young specimen. X 15 diam. 



Viy. 4. ('o)ic/iicolites tuhercidifira, sp. n. X 1^ diam. 



Fig. 5. E)itrochus, gen. et sp. iudot. ; from side. X 8 diam. 



Fig. f5. Tlie same form, upper end, showing joint-surface. X 8 diam. 



Fig. 7. rnK/zZ/fT, gen. et sp. iiidtit. ; joint- surface. X 20 diam. 



Figs. 8, 9. Trochitce, gen. et sp. indet. ; anotlierform. .\rticular surfaces, 



with ridges on Hg. 8, and grooves on tig. 9. X 20 diam. 

 Fig. 10. Beyrichia inuhh'nfiis, sj). n. X 4o diam. 

 Fig. 1 1. Beyrichia tuberculata (Kiteden), var. lineato-tuberculata, var. uov. 



X 30 diam. 

 Fig 12. Kloedenin gotlandica, s^. n. a, right valve, side view; b, edge 



view. 



XIX. — On the Squirrels of the Sciurus erjthra3U3 Group. 

 By J. L. BoNiiOTE. 



The squirrels of this group, though showing a considerable 

 amount of variation and forming races which closely resemble 

 each other, fall naturally into distinct groups, each group 

 being restricted to its own locality. 



The following remarks are based on the study of a very 

 fair series at the National Museum, but several other species 

 have been included, wiiich are not there represented, to show 

 what seems to be tlieir proper relation to the group as a 

 whole. I have been unable to make much mention of the 

 skulls, chiefly because the series of Indian skulls is rather 

 deficient, and, as the skulls of these allied forms differ so 

 slightly from each other, it is impossible to dra^v any deduc- 

 tions without a large series. 



Five distinct .sptcies may be distinguished in this group, 

 as well as several geographical races : — 



(i.) Sciurus erythrceus, Pallas, from Assam, spreading 

 through Bhutan, the Cacliar Hills, and Manipur to 

 Burma, 

 (ii.) Sciurus castaneoventris^ Grray, from China, its range 

 being from Ningpo to Burma, and possibly Assam, 

 (iii.) Sciurus Styani, Thos., between Ningpo and Shanghai, 

 (iv.) Sciurus thaiivanensisy sp. n., from Formosa, 

 (v.) Sciurus niel'jnoyiister, Thos., trom tSi-oban, Sipora. 



