572 BODENTIA 



DYROMYS ROBUSTUS Miller. 



1910. Dyromys robuslus Miller, Ann. and Mag. Nat. Hist., 8th ser., vi, 

 p. 459, November, 1910. Type in British Museum. 



Type locality. — Rustschuk, Bulgaria. 



Geographical distribution. — Known from the type locality only. 



Diagnosis. — Like Dyromys nitedula but skull broader and 

 more robust, with relatively shorter rostrum and much enlarged 

 auditory bullae. 



External characters and colour. — Not appreciably different 

 from those of D. nitedula (no skins examined). 



Slcull and teeth. — Skull of essentially the same length as in 

 the largest specimens of Dyromys nitedula, , but conspicuously 

 broader and more robust ; brain-case relatively shorter and 

 broader, its width above zygomatic roots nearly equal to distance 

 from posterior border of interparietal to narrowest portion of 

 interorbital constriction, its posterior outline appearing more 

 squarely truncate when viewed from above, and wider and lower 

 when viewed from behind ; in lateral aspect, owing to the 

 enlarged bullae, the brain-case appears deeper than in the related 

 species ; auditory bullae of the same form as in D. nitedula, but 

 so enlarged that their length from paroccipital process is nearly 

 equal to distance from front of bulla to infraorbital foramen ; 

 mandible heavy but with no special peculiarities of form. Teeth 

 with enamel pattern as in D. nitedula; relative size of upper 

 premolar about as in D. n. wingei. 



Measurements. — Type (adult female in alcohol) : head and 

 body, 95 ; tail, 87 ; hind foot, 22 ; ear from meatus, 15. For 

 cranial measurements see Table, p. 571. 



Specimen examined. — The type. 



f al. Bustsehuk, Bulgaria. K. Andersen (c). 11. 10. 8. 1. 



(Type of species.) 



Genus GLIS Brisson. 



1762. Glis Brisson, Regn. Anim. in Classis ix distrib., 2nd ed., p. 13 (Otis). 

 1780. Myoxus Zimmermann, Geogr. Gesch., n, p. 351 (Type by tautonymy 



Sciurus glis Linnaeus). 

 1843. Myoxus Wagner, Abhandl. kais Bayer. Ak. Wissensoh., Miinchen, 



Math.-Phys. Glasse in, p. 185 (Sub-genus of Myoxus). 

 1857. Glis Blasius, Saugethiere Deutschlands, p. 288 (Sub-genus of 



Myoxus). 

 1890. Myoxus Beuvens, Die Myoxidae oder Schlaefer, p. 56 (Sub-genus of 



Myoxus). 

 1895. Glis Merriam, Science, N.S., i, p. 376, April 5, 1895 (Genus). 

 1900. Elius Schulze, Zeitschr. fur Naturwiss., Stuttgart, lxxiii, p. 200 



(Sub-genus of Myoxus) part, included glis and nitedula. 



Type species. — Glis Brisson = Sciurus glis Linnaeus. 

 Geographical distribution. — Central and southern Europe from 



