Bishopp — A New Species of Dermacentor. 37 



including palpi in normal position. A female engorged to repletion on a 

 giunea pig measured LI. 2 x 6.3 x 4.0 mm., length including palpi. 



The larvae and nymphs drop from the host for molting. Notes on the 

 life history of the species and descriptions of the immature stages will he 

 published later. 



Amblyomma maculatum Koch. 



In examining a number of collections of immature specimens of ticks, 

 several lots of Amblyomma maculatum were found. Previously these had 

 been confused with Aponomma inornata Banks, but they are quite easily 

 distinguished in the nymphal stage, from that species, by two prominent 

 spines on the ventral side of the basis capituli. These spines point hack- 

 ward and are located near the posterior margin of the basis capituli behind 

 the base of the palpi. The palpi are longer and more slender than in 

 Aponomma inornata, article II being much narrowed basally and article 

 I not hearing the internal prolongation found in that species. The lateral 

 angles on the dorsal side of the basis capituli are sharp while in inornata 

 they are rounded. 



[n the material examined the following lots were found: 1 nymph on 

 meadowlark {Sturnella magna), December 1(1, 190S; 1 nymph on one, 2 

 on another and :! on still another meadowlark, January 5, 1909; 5 nymphs 

 on meadowlark, January 26, 1909; 1 nymph on meadowlark, January 27, 

 1909; 2 nymphs on red-winged blackbird ( Agetaius phoeniceus ), January 

 28, 1000; 1 nymph on Brewer's blackbird (Euphagus cyanua'phahis), 

 January 0, 1909; 1 nymph on jack rabbit (Lepus californicus mcrriami ), 

 March 2s, 1909. All of these collections were made by Mr. J. D. Mitchell 

 near Victoria, Texas, except the lot on jack rabbit which was collected 

 in Refugio Co., Texas. Five other lots of nymphs of this species were 

 collected by Mr. Mitchell. Some specimens in each of these lots were 

 bred to adults as well as a careful determination being made of the 

 nymphs. The records on these collections are as follows: 9 nymphs on 

 meadowlark, February 20, 1000; li nymphs on meadowlark, March 23, 

 1910; ] nymph on quail, March 24, 1010; 4 nymphs on meadowlark, 

 March 2.1, [910. The last lot was collected in Calhoun Co., Texas, all of 

 the others were taken in Victoria Co., Texas. 



The specimens obtained were in all states of engorgement. The fact 

 that all of the collections were made during the winter and early spring 

 docs not preclude the likelihood of the occurrence of the immature stages 

 on hosts during the summer months as well, as few hosts were examined 

 in other than the winter season in the region where this species is 

 common. 



