50 MR. G. K. DOBSON ON THE [Feb. 4, 



b'. Opening of male or female generative organs forming 

 ■with the anal orifice a shallow cloaca. 

 b". Ear-conch well developed ; tail long ; the fourth upper 

 incisor larger than the anterior maxillary tooth. 

 Dent. i^f=i . Pm. 2- 2 or 3-3. m^3-3^3Q ^^ , g^ ^^^^^ SouiCULUs', 



mand. b— b > ./ T!l (1 



c''. Eai'-conch trmicated above; tail short; the fourth xiiyui. 



upper incisor rudimentary or absent. 

 Dent. i-4-4or3-3.pm^3-3,m.3-3 ^3^ ^_. ^q ^^^^j^ BiARiNA, Gray. 



mand. b— b 

 d". Eai--conch well developed ; tail moderate; first upper 

 incisior as in Blariiia, without internal talon. 



Dent, i- 3-3. pm. 2-3. m. 3-3 ^ g^ ^eeth NoTiosoREX, 



b. Tail with ,an inferior fringe of long hairs; glans penis (.suDg.j iianc . 

 broad with lateral processes. {Aquatic.) 

 b'. Opening of male or i'emale generative organs enclosed 

 within the same integumentary ring as the unal orifice. 

 b" . Ear-conch small but perfect ; tail long. 



Dent. i^±=ikP^ 3-3.m.3-3 ^ ^^^^^^^ Crossopus, 



mand. b- 6 Wagler. 



11. Teeth white Subfamily CEOCIDURIN^. 



a. Tail without inferior fringe of long hairs ; glans penis 



cyliudroid, tapering. {Terrestrial.) 

 a'. Male or female generative organs ojiening close to the 

 anal orifice but distinct from it, not forming a shallow 

 cloaca as in Crocidura. 

 a". Ear-conch well developed ; tail long, clothed with equal 

 or subequal hairs. 



Dent. i^ 3-3.p m^j--3^m.3-3^ 3q ^j. 30 ^^^^1^ MyosoREX, 



mand. b — b or 7—7 , ri 



b'. Opening of the male or female generative organs forming ^' 



with the anal orifice a shallow cloaca. 

 b". Ear-couch well developed ; tail long, clothed with long 

 and short hairs intermixed. 



Dent, i- 3-3, pm. 3-|^oj^-^2^ j-3^ 38 or 30 teeth Ceocidura, 



mand. 6 — b Wxrler 



c". Ear-conch well developed; tail moderate ; soles of the ' ' •= • 



feet hairy. 



Dent. iiJlTiLPg: J --' "■ 3- 3^ og teeth Dtplomesodon, 



mand. b — b Rrinrit 



d". Ear-conch very short ; tail rudimentary ; soles of the feet ' 



naked. 

 Dent i-^-2.P"'-372,m.3- 3^ 26 teeth Anurosorex, 



maud, b— b » i\,] ; 1 VA„ 



b. Tail with an inferior fringe of long hairs; glans penis ^. ^'^u.-Jiuw. 



broad mth lateral processes. {Aquatic.) 

 b'. Male or i'emale generative organs opening within the 

 same integumentary ring as the anal orifice. 

 b". Ear-conch perfect but small ; plantar callosities simple. 

 Dent. iJt:!LPJ»- 2-^li±=i5 = 28 teeth Oi.imarroq ale, 



mand. b— b . 1 ,, 



c". Ear-conch not developed; plantar callosities forming ^imeison. 



adhesive pads. 

 Dent. ki=iLP^Ll=?iE":J=?= 28 teeth Nectogai.e, 



mand. 6 — b . i.«-i t^j 



A. Mil.-Edw. 



An examination of the arrangement and characters of the genera 

 as given above shows that a certuiu parallelism exists between tlie 



1 I have found two minute maxillary teeth .between the last incisor and the 

 last premolar in 8. quadrat icauda, A. Mil.-Edw., in which also the . nterior 

 mandibular tooth has three notches ; but in all other respects this species is and 

 luust be considered a true Soriculuf. 



