346 Mr. O. Thomas on the 



described in Anton August Heinrich Lichtenstein's * Cata- 

 logus ' * have been noticed by Wiedemann or any other 

 author. Bezzi (loc. cit. note 2) gives the number of the 

 species under the genera under which they were described, 

 but states that he has not yet seen the publication in 

 question. This is not sui prising, since, according to Slieiborn 

 (Ann. & Mag. Nat. Hi.st. serl 7, vol. iii. Ib99, p. 272), 

 Lichtenstein^s *Catalogus' is "so rare that only two copies 

 are known to exist, ( ne in the British Museum and one in 

 the University of Kiel." Lichtetistein''s Tabanidte were 

 described as Tahinus costalis (op. cit. p. 213) and Tuhanus 

 Hottentotus and T. charopus (ibid. p. 2l4). Ihe descriptions 

 are exceedingly short, and since few dipterists are likely to 

 be in a position to consult the originals, they are transcribed 

 in their entirety below, with a note in each case on the 

 systematic position of the species: — 



'^295. Tabanus striatus; n. 39+. Item: Tabanus cos- 

 talis; nobis. Taban. oculis seneis ; ferrugineus, alis hyaliuis 

 costa flava. Habitat in Ooromandel.''' 



[Apparently a labanus, but precise species probably 

 indeterminable.] 



" 304. Tabanus Hottentotus ; nobis. Tabanus ater ; 

 thorace, & abdominis segmento tertio supra flavo macularis 

 [sic]. Habitat ad Cap. bon. Spei. Haustelluui longitudine 

 capitis, a!ai nigise." 



[Evidently a Cadicera, near, though apparently distinct 

 from, C. {Fanyonia) clinjaostigma, VVied.] 



"305. Tabanus charopus; nobis. 'J'abaiius oculis fuscis, 

 ater, lanugiiie alba, alis hyalinis. Habitat ad Cap. bon. hJpei. 

 Haustellum longitudine thoracis.^' 



[Probably Boinhylius anatis, Fabr., c? •] 



LV. — The Missing Premolar of the Chiroptera. 

 \^J Oldfield Thomas. 



Ko bat has normally more than three premolars, above or 

 below, and the question has naturally arisen as to which of 

 the full mammalian set ot four has disappeared in this group. 



* ' Catalogus reruin i.aturalium rarissiniarum Hamburg] . . . auctionis 

 lege dLtraliendaiuiu . . .' Sectio tertia [Iiis-ecta]. bvo, llauiburg, 179ti. 



t The uumber under which Tabcmus ftriuttts was originally described 

 by Fiibricius, Eut. Syst. iv. 1794, p. 371. — E. E. A. 



