THE ORTHOPTERA IN THE CANARY ISLANDS. 



195 



Africa. Pachytylns danicus, L., as might be expected, is quite common. 

 TJie Mediterranean Oedaleiis nigrofasciatuR, De Geer, is replaced by its 

 Ethiopian representative O. scnef/alnisis, Kr. 



Of the Acridiidae proper, there are but few representatives, but 

 they are all interesting. As we have seen, the common south 

 European Caloptenits italicit^, L., is replaced in the islands by a local 

 form, C. volcaniiis, Kr. I cannot help feeling that Bolivar's record of 

 C. italicHs from the Monte Verde and the " cailadas " is based on bad 

 evidence. As we have seen, Aruiinda briinneri, Kr., a peculiar mono- 

 typic genus, plays the part of Plati/p/njina and Podivna. Dericorys 

 lobata, Brulle, is another peculiar species with African affinities, being 

 closely allied to D. bolivar i, Kr., from the Rio de Oro. 



The Paviphayidae are very naturally not represented, and of the Tetti- 

 yidae, there is but ParatettLv tiieridionalis, Ramb. ; this is not common. 



The Locnstidae are represented by a few species only, but these are 

 interesting. The only Phaneroptcridae are /'//. nana, Fieb., recorded 

 by Krauss and Bolivar from several islands. 



No Mcconemidae occur. Of the Conocephalidae there is only the 

 common C. nitididns, which is common. Locitsta is replaced, as we 

 have seen, by a peculiar genus Callipho)ia, Kr., with two species. 

 There is the remarkable insect Oropliila nubiyena, Kr., of which only 

 the male nymph has so far been described ; it is rare, and occurs on 

 St. John's Wort. It has the appearance of a Pseudophyllid, and has 

 features in common with that group and the Meconeinidae ; it is so 

 distinct that Krauss found it necessary to form for it a special 

 subfamily, the Orophilinae. In the Decticinae, Decticiis albifrons, 

 Fabr., and Platycleis yrhea, Fabr., are very common, the local 

 race of the former is distinctly smaller than the typical con- 

 tinental form. The dimensions of my specimens from Tenerife 

 are as follows : — Length of body, 3 26-32mm., ? 28-33mm. ; length 

 of pronotum, 3 7-8mm., $ 7-8mm. ; length of elytra, J 36-41mm., 

 $ 39-tl3mm. ; length of post, femora, J 28-30mm., 5 31-5-37mm. ; 

 length of ovipositor, 2 18-5-20mm. P. tessellata, Charp., P. inter- 

 VH'dia, Serv., and P. laticauda, Brunner, are also recorded. Peculiar 

 is the genus Ariayona, Kr., with a single species, A. iiiayyaritae, Kr., 

 an apterous form allied to Anterastes : its supposed rarity is probably 

 to a great extent due to its skulking habits. 



There are several species of crickets ; the common South European 

 species are: Oecantluis pellucens, Scop., TriyonidiiDii cicindeloides, Latr., 

 Grylliis brunneri, Selys, and Gryllomorpha lonyicauda, Ramb. tTryllns 

 Impanicua, Ramb., occurs also in the Spanish Peninsula, and G. 

 yuancliicHs, Kr., is peculiar. Lioyrylliia cainpestris, L., is replaced by 

 the African L. biwaculatnti, De Geer, the common cricket of the 

 islands. The European Mole-Cricket, (iryllotalpa yryllotalpa, L., is 

 recorded on the slender authority of Brulle ; it is probably to be 

 rejected, as suggested by Bolivar, as the Mole-Cricket of the islands 

 appears to be the smaller form, G. africana, Pal., taken by Alluaud in 

 the Grand Canary. 



To resume, the Orthoptera fauna of the Canaries is not rich, but 

 highly peculiar, and well deserves further investigation ; this requires 

 patience and time, as good localities are few and the interesting species 

 are all rare. Up to nearly 3,000 ft. it is hard to find an uncultivated 

 spot, and so as a rule below that limit, only the usual general southern 

 species are common. 



