50 MR. G. E. 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. ^.*rAP»-.2-2 or 3-3. m. 3-3 ^g 3^ ^^^^^ SORICULUS', 

 mand. h— b ' j ' 



e". Ear-conch truncated above; tail short; the fourth xilyln. 



upper incisor rudimentary or absent. 

 Dent, i- 4-4 or 3-3. pm. 3-3, m. .3-3 ^3^ ^^ .^ ^^^^j^ Bl.^rina, Gray. 



mand. b— b ' •' 



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

 incisior as in BJarina, without internal talon. 

 Dent. '• ■ pm. .^— ^. m. —2>2 teeth Notiosorex, 



mand. b — b , u \ t) • -i 



b. Tail with an inferior fringe of long hairs ; glans penis \®"°S0 ■oai'"''. 

 broad with lateral processes. {Aquatic.) 

 b'. Opening of male or lemale generative organs enclosed 

 within the same integumentary ring as the anal orifice. 

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



Dent. '• ' ^^°'' ""7 ' f = SOteeth Crossopus, 



mand. b— o ,tx t 



VV agler. 



II. Teeth white Subfamily CROCIDUKINiE. 



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



cylindroid, tapering. {Terrestrial.) 

 a'. Male or female generative organs ojsening 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^±r3:Pm^h=3,m^-3^ 30 or 32 teeth Mvosorex, 



mantl. b — b or 7 — i p 



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



with the anal orifice a shallow cloaca. 

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

 and short hairs intermixed. 



Dent. 'i^'^'-^-l-p:l-^-^-^-^= 28 or 30 teeth Ckocidura, 



mand. b — b „. . 



c". Ear-coneh well developed; tail moderate ; soles of the vvagier. 



feet hairy. 



Dent. i-^--''P'"-2-2.in..3-3 ^ 26 teeth DiPLOMEsoDON, 



mand. b — b t. ,^ 



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



naked. 

 Dent. i-2-2.pm.2-2.m.3-3 ^ 26 teeth Anurosorex, 



mand. b — b * A 1*1 j?A 



b. Tail with an inferior fringe of long hairs ; glans penis "*- JJ-'i.--C'aw. 



broad with lateral processes. {^Aquatic.) 

 b'. Male or female generative organs opening within the 

 same integumentary ring as the anal orifice. 

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

 T-. . i. 3 — 3. pm. 2 — 2, ni. 3 — 3 r^^i i. ii r^ 



Dent. — :s~-^^- = 28 teeth Uiiiji.irrogale, 



mand. b— b . 1 ., 



c". Ear-coneh not developed ; plantar callosities forming Anaerson. 



adhesive pads. 



_, . i. 3—3, pm. 2—2, m. 3—3 „„ , ^, „ 



Dent. *^ — J , ^ 3r 28 teeth jNectogale. 



mana. 0— D , -.,., -r-, , 



A. Md.-Edw. 



An examination of the arrangement and characters of the genera 

 as given above shows that a certain parallelism exists between tlie 



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

 last premolar in S. quad rat icaiida, A. Mil.-Edw., in which also the . nterior 

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

 must be considered a true Soricuhis. 



