ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 649 



way out. This is a phenomenon of " dynamic convergence," which the 

 author calls " ho?neopraxis." It is, indeed, very striking that the right- 

 ful tenant and the insinuated parasite which replaces it should have 

 similar adaptations, both structural and functional, securing emergence. 

 There is a parallel adaptation of host and parasite to the same conditions. 



Diptera as Ectoparasites on South American Lepidoptera.* — "W. 

 A. Schulz found, near Belem do Para in swampy thickets, that some 

 specimens of Morpho achilles bore small Diptera on the upper surface of 

 the wing, burrowing among the scales. The Diptera seem to be 

 members of the family Phoridre. They were also observed on small 

 Erycinidre, — Helicopis acis and H. cupido. 



Phagocytic Apparatus of Cleandrus graniger.f — C Dawydoff finds 

 that this locust possesses phagocytic organs analogous to these in 

 Gryllidae. They are three pairs of triangular sacs disposed on the three 

 first abdominal segments, and having their apices touching the heart. 

 They absorb solid substances, fat globules in milk, and bacteria with 

 rapidity. The internal face of the gland has a very thin epithelium ; the 

 whole of the reticular tissue of which it is composed is filled with little 

 leucocytiform cells. These are the cells whose role in the organ pre- 

 dominates. On the whole, the structure of the organ is more primitive 

 than that of Gryllidas. 



Cercopidas of Japan.J — S. Matsumura gives a revised and complete 

 list of the Cercopidaa of Japan, which is supplementary to that published 

 the previous year, and includes an account of nineteen new species. A 

 description of a new species of Cicada is included, viz., C. pyropa, very 

 similar to C.flammata, but easily distinguished from it by its yellowish- 

 red veinina;. 



"■a • 



Parthenogenesis in Copeognathas. § ■ — Constantino Ribaga brings 

 forward definite evidence that parthenogenesis occurs in Ectopsocus 

 ■briyysi, MacLachl. var meridionalis Ribaga, a common Psocid in Italy, 

 in which the male sex remains unknown. 



Nymphopsocus destructor : a new Copeognathid.|| — G. Enderlein 

 describes this form, which has appeared at Charlottenburg and elsewhere 

 in Germany in considerable numbers, and whose introduction has not 

 been traced. It devours furniture, forming little channels in the wood. 

 Apparently only the female and nymph have been found. 



Homoptera of North-East Africa. If — A. Jacobi gives an account of 

 the Homoptera from Neumann's collection. Ten new species are in- 

 cluded in the list, which, however, is not sufficiently complete to warrant 

 deductions regarding distribution, or general faunistic considerations. 



Louse of Elephant-Seal.** — Giinther Enderlein describes Lepidoph- 

 thirus macrorhini g. et sp. n., a new louse from the elephant-seal of 



* Zool. Anzeig., xxvii. (1904) pp. 42-3. t Tom. cit., pp. 707-10. 



X Annot. Zool. Japon, v. (1904) pp. 31-55 (2 pis.). 



§ Redia, ii. (1904) pp. 33-6. || Zool. Jahrb., xix. '1904) pp. 727-31 (1 pi.). 

 ■^ Tom. cit., pp. 761-82 (1 pi ). 

 ** Zool. Anzeig., xxviii. (1904) pp. 43-7 (5 figs.). 



