1869.] 95 [Ccues. 



pair obtuse, widened, each with obscure indications of three cusps, 

 and barely projecting from the gums. There are three teeth in the 

 upper jaw, separated from each other; the lateral ones, apparently 

 canines, being loosely set in, and projecting laterally outward from 

 the upper alveoli; the third, directly on the median line, and seem- 

 ingly representing the lateral pair of incisors combined, is only set in 

 gristle, from which its hard, conical cusp projects forwards as well as 

 downward, and from which its root was found, on dissection, to pro- 

 trude inwards. The shape of the root, which is flattened and later- 

 ally expanded, seems to confirm the suspicion that this single tooth 

 represents connate incisors. 



The detached nasal chambers form a curious fleshy and bony 

 "horn" or proboscis, running straight out from the forehead, on the 

 median line, above the ocular slit, as far as, or rather beyond, the 

 end of the maxillary snout. This proboscis has the form of a nearly 

 regular gradually tapering cone to near the end, where it suddenly 

 enlarges to terminate in a circular disk, with a single central hole — 

 a common nostril. The general shape calls to mind the snout of the 

 star-nosed mole, barring the fimbriae. 



The rest of the head is not noticeably misshapen, though rather 

 short for its depth. The ears are large and well formed. 



There is not such palatal malformation as might be anticipated in a 

 case of this sort; on the contrary, the bony roof of the mouth and 

 its mucous membrane are perfect. Just behind the palate, in the 

 normal position of the posterior nares, there is a slit leading into a 

 roundish depression capable of holding a pea ; this, however, does not 

 (nor could it, in consequence of the abnormal condition of the bony 

 parts, presently to be described) lead into the nasal cavities, but 

 forms a cul-de-sac, only perforated by the openings of the Eustachian 

 tubes, which are large enough to admit a straw. 



The nasal sense-capsules are wholly unossified; a conoidal mass of 

 gristly and membranous convolutions fills the nasal chamber, in place 

 of ethmoid and turbinals; the imperfect cartilaginous septum only 

 extends to within three lines of the end of the snout, there being a 

 common orifice. There is no cribriform plate : the olfactories pass by 

 a large irregular opening from the brain into the nose, and proceed 

 more than half way to the tip of the snout before giving off any ram- 

 ifications. 



The rudimentary eyes, only distinguishable with some difficulty, 

 are imbedded in a mass of cellular and fatty tissue that fills the fossa 



