134 



Watbrston (J.). Notes on Siphonaptera in the Albany Museum, 

 Grahamstown, South Africa, with descriptions of two new species 

 of the Genus Ischnopsyllus {I. isomalus and 1. grahami). — Records 

 Albany Mus., Grahamstown, iii, no, 2, 1st May 1915, pp. 107-119, 

 5 figs. 



The following fleas, which all appear to be widely distributed in 

 South Africa, are recorded, together with their hosts :• — Xenopsylla 

 cheopis, Rothsch., on Damaliscus pyrargus, Pall.; Xenopsylla nubicus, 

 Rothsch., and Ischnopsyllvs isomalus, sp. nov., on Miniopterus sp., 

 and RhinolopJms augur, K. And.; Ischnojjsyllus grahami, sp. nov., on 

 Eptisicus capensis. Smith ; Chiastopsylla rossi, Waterst., on Crocidura 

 fiavescens. Is. Geof. ; Chiastopsylla rossi, Waterst., on Otomys irroratus. 

 Brants, Mus rattus,!)., and Mystromys albicaudatus, Smith ; Listropsylla 

 agrippinae, Rothsch., Dinopsyllus ellobius, Rothsch., Leptopsylla 

 musculi, Duges, and EchidnojjJiaga gallinacea, Westw., on Mus rattus, L. 



Dunn (L. H.). Observations on the Preoviposition, Oviposition and 

 Incubation Periods of Dermacentor nitens in Panama (Arach., 

 Acar.). — Entom. News, Philadelj)hia, xxvi, no, 5, May 1915, 

 pp, 214-219. 



In January 1913, a horse in Panama was found to be infected with 

 Piroplasma caballi. This is the first record of this piroplasma in the 

 New World, and in view" of its probable transmission by the horse-tick, 

 Dermacentor nitens, observations were made on the bionomics of this 

 species. Larval ticks, after hatching, attach themselves to a suitable 

 host, upon which they undergo two moults. After the second, the 

 adult stage is reached ; the female, after copulation and becoming 

 engorged with blood, drops to the ground to deposit eggs. This 

 species nearly always adopts horses and mules as hosts, the ears being 

 the special place of attachment. In the ticks under observation, 

 the preoviposition period varied from 5 to 7 days, and the oviposition 

 period from 8 to 16 days. The largest number of eggs deposited in one 

 day was about four hundred. Incubation lasted from 25 to 27 days, 

 with an average minimum temperature of 74° F. Eggs deposited 

 first seem to require a longer incubation period than those deposited 

 later. Further observations on this subject are being carried on. 



Hutchison (R. H.). A Maggot Trap in Practical Use; an Experiment 

 in House-Fly Control. — U.S. Dept. Agric, Washington, D.C., 

 Bull. no. 200, 4th May 1915, 15 pp., 4 figs., 3 plates. 



In the experiment carried out by the author at Maryland Agricultural 

 College, three lines of observation were followed : — (1) The collection 

 and estimation of larvae caught in the trap and subsequent search for 

 puparia in the manure ; (2) the counting of flies to determine any 

 decrease in numbers ; (3) the determination as to whether flies at 

 the college came from breeding grounds other than manure at the 

 college stable. The trap consisted of a concrete floor 22 feet long by 

 12 feet wide; around this was a rim of concrete 4 inches high. A pipe 

 from one corner led into a small cistern. Standing on the floor of 

 the concrete basin was a wooden platform 20 feet by 10 feet, supported 



