79 



A brief review of the numerous insects concerned is given. Another 

 section deals with the increased knowledge, due to Tropical Medicine, 

 of the biology and morphology of insect vectors. 



EwiNG (H. E.). U.S. Bur. Ent. The Genus Troiibiciihi, Berlese, in 

 America and the Orient. — Ami. luit. Soc. Avier., Colitmhns, Ohio, 

 xiii, no. 4, l)eccnU)cr 1920, pp. 381-390, 3 figs. 



A key to the genus is given, and Troinhicula splendcns, Ew., and T. 

 coarctaia, Berl., are described and compared. Although there is a strong 

 superficial resemblance between these two mites, close examination 

 proves them to be distinct. T. minor, Berl., is considered to be 

 the nymph of T. mediocris, Berl., by Miyajima, the former name 

 having priority ; but more data concerning tlie life-history of T. minor 

 are needed before the question can be settled with certainty. 



T. cinnabaris, sp. n., is described from Virginia and Maryland. 

 The adults of this species feed chiefly on small Arthropods. 



Debaisieux (P.). Coclomycidimn siiniili, nov. gen., nov. spec, et 

 Remarques sur VAmoebidium des Larves de Simulinm.- — La 



Cellule, Lierre & Loiivain, xxx, no. 2, 1920, pp. 249-276, 2 plates. 



The various stages and the systematic position of Coelomycidium 

 simuli, gen. et sp. n., a parasite of Simuliids, probably of Siimdium 

 (Melusina) maculatum, Meig., are described. 



Ramakrishna Ayyar (T. V.). Note on a Musciphagous Wasp 



(Bembex lunata). — -Rept. Proc. 3rd Ent. Meeting, Pitsa, February 



1919, Calcutta, iii, 1920, pp. 909-910, 1 plate. 



Bembex lunata is recorded from India as predaceous on various 

 blood-sucking flies, such as Stomoxys, Lyperosia and Philaematomyia. 



Fletcher (T. B.) . Report of the Imperial Pathological Entomologist. — 



Sci. Repts. Agric. Research Inst., Piisa, 1919-20, Calcutta, 



1920, pp. 95-108. [Received 18th February 1921.] 



Owing to the death of Mr. Howlett, this report has been written by 

 the Imperial Entomologist from the notes available. 



A study was made from November 1919 to February 1920 of para- 

 sites of Tabanids ; these were obtained from egg-masses of Tabamis 

 sanguineus, T. albimedius, T. bicallosus, T. crassus, T. virgo, and 

 Chrysops stimulans. When egg-masses were being collected in 

 November 1919, no trace was found of T. hilar is, T. nemocallosus, 

 or T. brunnipennis, which are commonly found during the rains at 

 Pusa. The dates of emergence of the parasites from the various 

 Tabanids are recorded. 



Among the parasites collected from birds' nests were two species of 

 blood-sucking midges of the genus Ciilicoides, found in large numbers 

 in crows' nests. 



A Lygaeid known as the squirrel bug has been shown to suck the 

 blood of man, rabbit and goat under laboratory conditions, and was 

 generally found in squirrels' nests. No bug of this family has hitherto 

 been recorded to suck blood, though many of therii are known to harbour 

 flagellates, either Herpetomonas or Crithidia. A species of Stomoxys, 

 apparently 5. oblongata, was found to breed inside the nest materials 



