CURRENT NOTES. 



197 



29. A. A. Yakhontov : "0 Pieris napi L. var. intermedia 

 Krul." {op. cit. pp. 15-8 [Lepidopterta] ). 



The title of the finely illustrated paper of Felt and Joutel (6) 

 is slightly misleading, as it is really a monograph of the Ameri- 

 can species only, some of which, however, are also European. 

 The descriptions, synonymy and bibliography, habits, &c., are 

 very fully worked out, and the numerous plates are well executed. 

 Barreda (7) discusses the cotton boll-weevil {Anthonoinus grmidis) 

 in a practical manner. He mentions that one estate in Coahuila 

 lost one thousand seven hundred dollars in four years, while 

 another in San Luis Potosi lost one hundred thousand dollars 

 last year. Morrill (10) has given us valuable information on a 

 subject very little studied, the metamorphoses of heteropterous 

 Hemiptera. 



It is well known that in certain forms there exist, as well 

 as free leucocytes, very curious special structures named by 

 Dawydoff (8) " phagocytary organs" (lymphatic glands). _ Ap- 

 parently these glands are not circumscribed and defined in the 

 cockroaches and mantids (at least in some of them), the same 

 being the case in the nymphs of Grijllodea. In certain adults of 

 the latter suborder these organs are well defined and limited; in 

 others, however, this is not the case {Gymnogryllus). 



Lounsbury's latest publications deal principally with ticks, 

 the Annual Eeport (1) treating specially of malignant jaundice in 

 dogs. The transmission of African Coast fever (2) is attributed 

 to the tick Rhi^nccphalus app)endiculatus, which is considered 

 " the principal, and, perhaps, the only natural transmitter of 

 a highly fatal cattle disease." 



Fliylloxera corticalis is noted as a new oak-tree pest in South 

 Africa, where it has been causing considerable damage (9). 

 Owing to the fact that the South African oak {Quercus pedimcu- 

 lata) has been propagated in that country only from seed, it 

 has remained singularly free from pests, only one other insect, 

 and that also an aphid {Callipterus quercus), being confined 

 to it. 



Zimmermann's paper (5) deals mostly with fungous diseases, 

 but also with noxious insects, viz. : Sjyhinx nerii on Cinchona 

 (pi. iv. figs. 6-8), Displdnctus on Piper capense (figs. 3-5), Helo- 

 peltis sp. on Bixa orellana (figs. 9-12), and Thrips spp. on 

 coffee. 



The Commission of Agricultural Parasitology in Mexico has 

 issued a bubstantial volume (4) of over seven hundred pages on 

 the pests to Agriculture in that country. These are assembled 

 under plant headings, the latter being arranged alphabetically. 

 Sixteen crowded plates and a number of text-figures illustrate 

 the written matter. The introduction is dated Nov. 1901, the 

 cover 1903, but the title-page 1901 ! Mokrzecki (11) describes 



