770 NOTES ON THE VAMPIRE BAT— ALLEN. vol.xviii. 



exserti; incisivi supra infraque quatiior, superiores medii lateralibus postpositi, 

 maiores, apice sexdeutati, semicircularitercollocati, largi, cauiuis coiitigui; molares 

 supra iufraque octo, breves apice creuulati, inieriores a cauinis distautes, lingua 

 subverrucosa, apice uonnibil lata et obtusa; labia nou verrucosa, feie uti iu Molosso 

 pilosa; iiienibrana alaris augustata, lumbis adnata, versus apicem digitorum valde 

 elougata, temiis, recurva, versus tibi;e basin excavato-decurrens; pollex inanus solum- 

 uiodo nnguicnlatuis, cumradio et digito indice membraua vix ulla eonjunctus; pedes 

 posteriores radium bracliil fere a-quantes.membrana interfemoralis deticieute oninino 

 liberi; planta pedis longior; digiti pedis posterioris ouines unguiculati; calcaneus 

 extus vix couspicuus; cauda nulla. 



DIPHYLLA ECAUDATA, 



Corjxiro villoso-i)iloso; dorso I'usco-brnnneo ; capite et abdomine subtus brunneo- 

 cauescentibus; alls nigricautibus, nudiusculis; facie versus aures villoso-pilosa, 

 nudiuscula; cauda et membraua iuterfemorali uullis; calcaueo extus vix couspicuo. 



Longitudo truuci a nasi ;ipice usque ad cauihe iunitium 3", capitis f", humeri f", 

 radii If", pollicis 5'", digiti iudicis 1" 4'", medii 2f", minimi 2" 1'", femoris J", tibiie 

 7'", plautie 8'", auricularum 3'", tragi f"; latitude) occipitis ultra V', auricularum 

 4^'", interscapulas IV', alarum extensarum lOJ". 



There is a slight hick of harmony between the figure and the descrip- 

 tion. The calcaneum is said to be present (vix conspicuus), while it is 

 not visible at all in the figure.^ 



The molars are erroneously given, since four are counted on each side 

 of both upper and lower jaws. One fails to understand how the exceed- 

 ingly minute lateral incisor was detected when the larger teeth mak- 

 ing up the ])remolar and molar series were miscounted. 



The coloration given by Dobson — "above, reddish brown; below, 

 yellowish white" — is unlike that of the National Museum specimens. 

 The language of Spix, however, agrees so far as I translate the phrases 

 " dorsus fuscus-bruuneo, subtus brunneo-canescentibus '' (back, clear 

 brown to obscure brown ; below, obscure brown gray aud white) — as we 

 would say, " hoary brown ". 



It is difficult to account, except on the ground that this specimen was 

 immature, for the description of Wagner. According to this writer, 

 Diphylla possesses six incisors iu the upper jaw, only two molars (pre- 

 molars and molars'?) in the upper and three in the lower jaw. The 

 interfemoral membiane is absent. Above, the hair is red brown and 

 unicolored; below, of a dirty yellowish white, the hairs being brown 

 at their bases. The account would be quite unrecognizable were the 

 characteristic pectination of the lower incisors not given, a peculiarity,, 

 indeed, which creates for the species the name of " Der Kammzahn." 



E. li. Alston states that Diphylla is distinguished from Desmodus 



' Spix's name Diphi/Ua is defined in the first words of his description " naso bifoli- 

 ata." The nose may be said to be bifoliate in DtphylUt, Desmodua, Jirachi/phylla, 

 ilorini>p8. Cliilomjcteris and Natalus. The posterior "leaf" appears to be a glandu- 

 lar mass, the sides of which are constant in all the Phyllostomida^. In the usual 

 forms (naso mouofoliata) the lance-shaped appendage to the muzzle appears to take, 

 the place of the posterior " leaf." 



