160 Mr. J. L. Bonhote on the Squirrels 
The type specimens have been placed in the British Museum 
(Natural fHistory). 
EXPLANATION OF PLATE III. 
ig. 1. Hyperammina ramosissima, sp.n. X 15 diam. 
Fig. 2. Stacheia stomatifera, sp.n. X 10 diam. 
lig. 38. Syringopora serpens (Linné). Young specimen. X 16 diam. 
Fig. 4. Conchicolites tuberculifera, sp. n. X 12 diam. 
Fig. 5. Entrochus, gen. et sp. indet.; from side. X 8 diam, 
“vg. 6. The same form, upper end, showing joint-surface. x 8 diam. 
Fig. 7. Trochita, gen, et sp. indet.; joint-surface. x 20 diam. 
wgs. 8, 9. Trochite, gen. et Sp- indet. ; anotherform. Articular surfaces, 
with ridges on fig. 8, and grooves on fig. 9. xX 20 diam. 
Fig. 10. Beyrichia muldensis, ‘sp. n. x 45 diam. 
Fig. 11. Beyrichia tuberculata (Klceden), var. lineato-tuberculata, var. nov. 
x 30 diam. 
Fig. 12. Kledenia gotlandica, sp.n. a, right valve, side view; 6, edge 
view. 
XIX.—On the Squirrels of the Sciurus erythreus Group. 
By J. L. Bonuore. 
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, which are not there represented, to show 
what seems to be their 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 draw any deduc- 
tions without a large series. 
Five distinct species may be distinguished in this group, 
as well as several geographical races :— 
(i.) Seturus erythreus, Pallas, from Assam, spreading 
through Bhutan, the Cachar Hills, and Manipur to 
Burma. 
(ii.) Seturus castaneoventris, Gray, from China, its range 
being from Ningpo to Burma, and possibly Assam. 
(ii.) Scvurus Styant, Thos., between Ningpo and Shanghai. 
(iv.) Serurus eanenee , sp. n., from Formosa. 
(v.) Sccurus melanogaster, Th o8., trom Si-oban, Sipora. 
