124 Mr. R. I. Pocock on the 



unquestionably to the Mediterranean fauna of the Palajarctic 

 region. 



Thus the western Palcearctic element is almost equal to 

 the Antillean — a circumstance which is both interesting and 

 surprising, seeing that the plants, land-moUusca, insects, and 

 spiders appear to be almost wholly West-Indian or East- 

 American. 



Also of considerable interest was the small series of species 

 obtained from TenerifFe, showing the distinctly Mediterranean 

 character of the mainland fauna of this island. 



Class CHILOPODA. 

 Fam. Scutigeridae. 

 Scutigera coleoptrata (Linn.). 

 Loc. Bermuda. 



Scutigera planiceps J sp. n. 



Scuti(/era mgosa, Porath, " Myriopoda Africfe australls in Miiseo Regio 

 Holmiensi asservata," ffifv. Vet.-Akad. Forhandlingar, 1871, no. 9, 

 pp. 1138, 1139 (not Scutigera mgosa, Newport, Linn. Trans, xix. 

 p. 353, 1845). 



Log. Simon's Bay (Cape Town). A single specimen. 



Porath's description of this species is sufficiently accurate 

 to leave no doubt as to the specific identity of his specimens 

 with the one mentioned above. But since these specimens 

 are certainly totally distinct from rugosa of Newport, the type 

 of which is preserved in tlie British Museum, it is necessary 

 that they receive a new name. It is proposed therefore to 

 call them planiccps^ in commemoration of perhaps their most 

 marked characteristic, namely the flatness of the upper surface 

 of the head. 



Porath's specimens were evidently somewhat faded, for he 

 merely describes them as being " supra nigrescens, subtus 

 pallidior." In reality the general tint of the upper surface is 

 a deep black-brown ; but when more critically examined the 

 tergites are seen to be adorned with a median black longitu- 

 dinal band and to be black at the sides, the intermediate area 

 being of a reddish-brown tint ; the legs are a pale olivaceo- 

 testaccous colour and the tarsi are ochraceous. The stomata 

 are small and the stoma-saddles very low. 



Sc. rugosa of Newport, from East Africa, which Porath 

 mistook for this species, is very different. It is a very beautiful 

 form, the tergites being a deep black, this sombre colouring- 

 being relieved by an orange-yeilo^v median dorsal band wliich 



