270 Tnsecta. 



(III) The autlior next deals with the cockroach-genus Prosopkcta, in which 

 the resemblauce to Coleoptera is not of a generalised nature like that referred 

 to above, but in which several species definitely resemble particular species of 

 Coleoptera found in the same locality. The species of Prosopleda are in ap- 

 pearance "coccinellif orm" (sensu lato) : oval, convex, with smooth nitid integuments, 

 Short legs and antennae, and bright colours. 12 species are known, 8 from the 

 Philippine Islands, one from Celebes, and 3 from Ceram and Batchian : they clo- 

 sely resemble certain Chrysomelidae, Coccinellidae and Erotylidae. In four cases 

 the author mentions particular species of Coleoptera which the cockroaches ad- 

 rairably mimic, and coloured figures of modeis and mimics are given side by side : 

 in the other cases the cockroaches are not paired with particular species of 

 beetles, but the author feels confident that the modeis will eventually be found. 

 Moreover, mimicry does not usually affect parts of the iusect which are concealed, 

 and which play no part in the mimetic resemblance, but in the case of Proso- 

 plecta it has done so. The wings are hidden under the tegmina, but to complete 

 the minjetic resemblance they have had to be shortened, and this is accomplished 

 by a Spiral roUing up of the apical portion in repose. Some other cockroaches 

 fold or roll up the apical portions of their wings, and special morphological 

 characters are developed for the purpose: but in Prosopleda the rolling is carried 

 out quite independently of these characters, and in defiance of the rule observed 

 by all the other species: this is demonstrated at length and with the help of 

 figures. 



(IV) The species of Prosopleda are revised: a new genus, 3Jelyroidea, inclu- 

 ding two species of ''generalised" Coleopterous mimics, is described. 



H. Scott (Cambridge). 



883) Shelford, R., Cosmopolitan cockroaches. In: Ent. Record and Journ. Varia- 

 tion, Bd. XXIV, Heft 9, S. 217—218, 1912. 



884) — , Notes on the distribution of the Blattidae, Ibid., Heft 10, S. 238—240, 

 1912. 



When a species is found in a domesticated condition all over the world, and also 

 in a wild state in a certain restricted area, it is highly probable that that area is the 

 true native land of the species. But the cosmopolitan Blattidae are everywhere found. 

 for the most part, only in association with man and his works, i. e. in ships, buildings, 

 plantations etc. : hence it is often very hard to teil what is really their native country. 

 The truly cosmopolitan species are: — Blattella germanica Linn., Periplaneta americana 

 Linn. , P. australasiae Fabr. , Bhyparohia maderae Fabr. and Pycnosceltis surinamensis 

 Fabr. In addition to these the writer gives a further list of 6 species which are 

 almost cosmopolitan: Blatta orientalis Linn. is one, while the remaining 5 are essen- 

 tially tropical species, which occasionally ränge into temperate zones but seem unable to 

 establish themselves permanently there. 



The second article consists of a list of genera peculiar to the various Zoological 

 Regions, or to combinations of them, an-anged under the headings of the regions and 

 in subfamilies. H. Scott (Cambridge). 



885) Bartenew, A. N., Palaearktische und ostasiatische Species und Sub- 

 species der Gattung Calopteryx Le&ch. (Odonata, Calopterygidae) [Bap- 

 TeaeB'fc, A. H., IlajieapiairiecKie ii üocTOHHO-aiiiaTCKie biiah h lioAiiiiAw po;i,a Calopteryx 

 Leach. — Bapuiancicifl yHnuepc. IhiirbcTifl]. In: Warschauer Univ. -Nachr., V, S. 25 — 40 

 (Forts.), 1912. 



Verf. beschreibt Calopteryx unicolor sp. n. (aus Turkestan), C. virgo L., C. virgo 

 virgo{^), C. virgo meridionalis Sei. Bachmetjew (Sophia). 



886) BarteneW) A. N., Palaearktische und ostasiatische Species und Sub- 

 epecies der Gattung Calopteryx Leach. (Odonata, Calopterygidae) [Bap- 

 leHeB'h, A. IL, Ilajieapinii'iecicie n liocTO'iHoasiaTCKie bhah h hoabhauo poAa Calopteryx 

 Leach. (Odonata, Calopterygidae). . — BapniaBCicifl Yhhb. H:jbIict.]. In: Warschauer Univ.- 

 Nachr., VI, S. 41—56, VH, S. 57—72, VIII, S. 73—88, 1912. 



