Vol. xxvi] 



ENTOMOLOGICAL NEWS. 



21$ 



heavily infested with ticks. The inner side of both ears* was 

 a thick mass of attached Dermacentor nitens in all stages of 

 development — from small larvae to engorged adult females — 

 but the majority consisted of nymphs. Of the number taken 

 from the ears twelve engoriged and partially engorged females 

 was separately weighed and measured and placed in separate 

 pctri-dishes numbered consecutively from' i to 12. 



The state of engorgement of each tick was noted, as owing 

 to the mule's condition it was condemned and killed, making 

 it impossible to secure a sufficient number of females that 

 were fully engorged, but of the twelve selected eight were fully 

 engorged and would undoubtedly have very soon detached 

 themselves if they had lieen left on the ear and the mule not 

 been killed. 



The ticks were observed and noted as being: 



Tick No. I— Folly cnfOffcd. Tick No. 7— Nearly engorged 



a— Fully cu gof g ed. Tkk Na 8— Fully cfworged. 



3— Partly ca goc f sd. Tick Na 9— Fully cf^r g c d . 



4— Fully cnforged. Tick Na 10— Partly eagoi i gBd. 



5— Fully cofovied. Tide No. 11— Partfy engofged. 



6— Fully cagoiied. Tkk Na la— Partly engor g ed. 



The weights and measurements of the twelve females vmried. 

 The largest one. being fully engorged, weighed .2199 gram« 

 and was 1 1 mm. in length, 8 nun. in width, and 5 mm. in height 

 The smallest being but partially engorged, weighed X3607 gram, 

 was 7 mm. in length, 5 mm. in width, and 3 mm. in height 

 The combined weight of the twelve ticks was 1.2963 grams. 



The weight and measurement of each tick was noted as fol- 

 lows : 



Tick Na 

 Tick Na 

 Tick Na 

 Tick No. 

 Tkk Na 



*Note. — The can contained so many ticks and were such good speci- 

 mens to show a severe infestation of D. nitens that upon the dcatn of 

 the mule one of the cars was removed and preserved aiiMl has now been 

 sent to the Pinsma-Pacific ExpoMtion at San Francisco. 



