674 CLASS XVII. 



this somewhat in size. — Mus musndus L., Buff. vii. PI. 39, Swppl. iii. 

 PI. 30, p. 182, ScHEEB. Sdtigth. Tab. 181, Cuv. R. Ani., ed. ill., Mammlf. 

 PI. 58, fig. I ; the mouse, la souris, die Hausmaus. These three species 

 have been dispersed with man over nearly the whole world. — Mus minutus 

 Pall., Mus pendulinus Hekm. (and M. soricinus and parvulus ejusd.^), 

 Pall. Glir. Tab. 24 b ; still smaller than the house-mouse and with shorter 

 tail ; light ruddy-coloured, white below. This species builds in corn-fields 

 a nest of straw and leaves, which it suspends, and in which the female 

 suckles and nurses her young. See a figure of Gloger Nov. Act. Acad. 

 CcBS. Leap. Car. xiv. Tab. 23. — Mus sylvaticus L., Buff. vii. PI. 41, 

 ScHREB. Sdugth. Tab. 180, \he field-mouse, le midotj reddish-grey, white 

 below ; somewhat smaller than the house-mouse ; this species sometimes 

 multiplies so greatly as to cause much damage to the crops. It has the 

 legs, and especially the hind legs, longer, and moves by jumps. It makes 

 the transition to Meriones Illig. 



The largest known species of this genus is Mus giganteus Raffles, 

 Linn. Transact, vii. PI. 18, from Bengal and Coromandel, which attains a 

 length of fully two feet. Some species have (especially on the hind part of 

 the back) spines dispersed under the hair. Here belong Mus cahirinus 

 Geoffr., Lichtenstein Darstell. neuer od. wenig bek. Sdugtli. Tab. 37, 

 fig. I, Mus dimidiatus Cretschm., Ruepp. &c. They form the sub-genus 

 Acomys of IsiD. Geoffr. Saint-Hilaire. In a new species from Mosam- 

 bique the spines commence even on the head {Mus spinosissimus Peters, 

 Mossamh., Zool. 1. p. 160, PI. 34, fig. i). 



Steatomys Peteks. Upper incisors furnished in front with a 

 longitudinal groove. Tail somewhat short. 



Pelomys Peters. Upper incisors grooved. Tail elongate. Outer 

 toe both before and behind short. 



On these African sub-genera consult Peters 1. 1. pp. 157 — 159 and pp. 

 162 — 166. 



Dendromys Smith. Upper incisors grooved. Fore feet with 

 three toes and hallucar wart. Tail long, thinly haired, ringed. 



Sp. Mus mesomelas Lichtenst., Dendromys typicus Smith, &c. Comp. 

 Smith Zool. Journ. xvi. 1829, Bulletin des Sciences nat., AoUt, 1829, p. 275, 

 Brants iV/i«seM, bl. 122—124. 



Note.— On other sub-genera, here omitted {Pseudomys Gray, Proceed. 

 Zool. Soc. 1832, p. 39, Akodon Meyen, &c.), comp. Wagner in Schreb. 

 Sdugth., Supplementband, 3tte Abth. 



B. Tail densely haired. 



1 De Selys-Longchamps Etudes de Micromammalogie, Paris, 1839, ^vo, pp. 

 68, 69. 



