28 THE ENTOMOLOGIST. 



Food-Plant. — Poa tririalis. 



Locality. — Eotbamsted (11, ix, 17). A. W. Kymer Eoberts. 



A very marked species, which is very active when alive. It 

 differs from any of the described Sipha in its much narrower 

 body. The antennse are very short, and approach those of 

 S. schoiitedeni. In all the mounted specimens I have, the 

 cornicles show as two simple circular pores. The colour notes 

 were sent me by Mr. Kymer Eoberts. 



The young forms seem to have the body constricted between 

 the thorax and abdomen, and the abdominal segments much 

 more defined. Its extremely narrow body gives it an almost 

 Thrip-like appearance. 



The other European members of this genus and their food- 

 plants are as follows : 



(1) Sipha maydis. Passerini, on Holciis sp.; Hordeiim 

 viurimun, Loliiim p)€renne and L. imdtiflornm, Zea mays, Arena 

 sp. and Cynodon dactylon. 



(2) Sijjha glycerice. Kaltenbach, on Glyceria fluitcins and 

 G. aqiiatica, Poa annua, Phalaris arundinacea, Juncus lampocarpus, 

 Leersia oryzoides, and Triticnm sjyetta. 



(3) SipJta schoutedeni. Del Guercio, on Holcus, Poa, and 

 Glyceria. 



(4) Sipha hcrlcsi. Del Guercio, on Aira caryopliyllea , Des- 

 champsia Jlexuosa. 



(5) Sipha eleyans. Del Guercio, on Hordeum mnrinum. 



(6) Sipha graminis. Kaltenbach, on Authoxanthum odoratum 

 and Avena sp. 



(7) Sipha hifinouice. Macchiate, on Bignonia catalpa and 

 radicans. 



(8) SipJia paradoxa. Nov. sp. on Poa tririalis. 



31. Callipterus ononidis, Kalt. 



This Aphid, which I redescribed in all stages in the 'Bulletin 

 of Entomological Research,' vol. ii, pt.ll, pp. 134-138, figs. 25,26,. 

 September, 1915, has been found in North America, India, Egypt, 

 and Europe. It is the Callipterus trifolii, Monell, of America, the 

 Chaitophorus macidatus, Buckton, of India, in which genus Koch 

 placed ononidis, whilst Passerini placed it in the genus Myzocallis. 

 It has been found for the first time in Britain this year. I took 

 a few on red clover at Wye in June, all apter?e, and Mr. Eymer 

 Ptoberts has sent me an apterous oviparous female from clover 

 taken at Piothamsted in October, all of which closely agree with 

 my American, Indian, and African specimens. 



32. Cryptosiphum artemisice, Passerini. 



This species was recorded by Buckton (' Mono. Brit. Aphid.," 

 ii, p. 145) from Brandon, in Norfolk, where in August alate and 

 apterous females were fairly plentiful on Artemisia vulgar e. This 



