56 



VII. TARSIIDAE. 



Tarsias Storr=Macrotarsus C. & &.=Cephalopachus Sw.=Hypsicebus Less. 



SUPER-FAMILY DAUBENTONIOIDEA. 

 VIII. DAUBENTONIIDAE. 



Daubentonia Geofi.=Aye-aye ha.c.— Cheiromys Cuv. 



FERAE. 



SUB-ORDERS. 



I. Body more or less raised, with the legs exserted beyond the elbows and 

 knees, and with the feet (generally with free toes) adapted for walking. 

 Manus and pes with first phalanges and digits not enlarged nor produced 

 beyond the others (attypically more or less reduced or even atrophied). 

 Skull moderately compressed between the orbits : with a distinct lachry- 

 mal bone, perforated by a canal (the lachrymal), and more or less exserted 

 outside the orbit, and, in conjunction with the malar, forming the anterior 

 margin of the orbit : palatines extending forwards laterally between the 

 frontal and maxillary bones, and leaving no vacuity. Tympanic bound- 

 ed behind by the exoccipital. Deciduous dentition well developed. 



FISSIFEDIA. 



II. Body prone, with the legs confined in the common integument beyond 

 the elbows and knees, (with the feet rotated backwards, and with toes con- 

 nected together), and especially adapted for swimming. Manus and pes 

 with first phalanges and digits enlarged and produced beyond the others. 

 Skull much compressed between the orbits: with a lachrymal bone early 

 united with the maxillary, imperforate, and entirely contained within the 

 orbit: malar applied to the inner side of a transverse zygomatic process of 

 the maxillary and not continued to the front of the orbit (which is there- 

 fore bounded by the maxillary) : palatines not extending forwards later- 

 ally, extensive vacuities intervening between the frontal and maxillary 

 bones. Tympanic separated from the exoccipitals by a vacuity as well as 

 by the re-entering periotic bones. Deciduous dentition much reduced 

 and rudimentary. 



PINNIPEDIA. 



FISSIPEDIA. 



FAMILIES. 



I. Skull with the paroccipital process applied closely to the auditory bulla ; 

 the mastoid process small or obsolete ; external auditory meatus very 

 short or imperfect. Intestinal canal provided with a cceuum. Prostate 

 gland salient. 



A. Skull with carotid canal minute and superficial or obsolete; condyloid 

 foramen and foramen lacerum posticum debouching in a common 

 fossa: glenoid foramen minute or null. Os penis rudimentary (in 

 Cryptoproctidce, enlarged). Cowper's glands present. (Aelui-oidea.) 



