DEKMACENTOR ALBIPICTUS PACKARD. 45 



and wapiti, but also recorded from the beaver. Packard first used 

 tlie name alhipicttis for this moose tick, as shown in the appended 

 catalogue, but later placed under this name a specimen of D. varia- 

 bilis. The types from the moose are still in the Museum of Com- 

 parative Zoology, where I have examined them. Neumann, using 

 Marx's manuscript name, described it as D. variegatus. 



The species is distinguished by its elongate form, especially the 

 long shield, the shape and sculpture of the stigmal plate, and by its 

 large size. This latter character, however, is variable, and specimens 

 are found that are not much larger than the ordinary D. variabilis. 



Dermacentor parumapertus Neumann. 



Male. — ^Dark red-brown, legs a trifle paler, no white markings, 

 except sometimes a few small spots, and a minute white spot at tips of 

 some joints of the legs. Capitulum (PI. VIII, fig. 10) moderateh 

 broad, hind angles only very slightly produced; palpi verj^ short, not 

 as long as width of capitulum; dorsum one and two-thirds times as 

 long as broad, with manj^ scattered, deep, but not very large 

 punctures, submarginal furrow very distinct on the sides, less so 

 behind; twelve impressed lines near posterior margin. Coxa? spinecl 

 as usual, hind coxse barely wider on base than long, legs rather short, 

 hind pair not so much larger than the others, and the teeth below 

 small and indistinct. Stigmal plate (PI. VIII, fig. 10) elongate, 

 attenuate behind, the fore part around peritreme with large granules, 

 a few down on the narrow portion, which is covered Avith smaller 

 granules. 



Length of male, 2.8 mm. 



Female. — Shield and capitulum dark red-brown or almost black, 

 without marks; abdomen blackish; legs red-brown, a faint white 

 mark at tips of some of the joints. Capitulum (PL VIII, fig. 10) 

 moderately broad, hind angles distinctly prolonged behind, porose 

 areas rather small, nearly circular, and well separated; palpi as long 

 as width of capitulum. Shield (PL VIII, fig. 10) plainly a little 

 longer than broad, with many deep punctures, those in the depressed 

 area each side especially large and numerous, almost confluent. Legs 

 rather small and short; coxae armed as usual. Stigmal plate (PL 

 VIII, fig. 8) small, with a distinct, although short and broad, dorsal 

 prolongation, most of the surface with rather large granules, but 

 those on the prolongation very small. 



Length of female shield, 1.1 mm. 



Specimens are from Lakeside, Cal. (also Neumann's type in the 

 Marx Coll.), taken on man, and in a chicken house. 



Distinguished from other forms most readily by lack of white on 

 shield, by porose areas, and stigmal plate. After describing this 



