GENUS CERATTXODES NEUMANN. 21 



Tarsi II, III, and IV divided, the parts of variable length, no tooth- 

 like claw at apex. 



Type. — G. {Ixodes) putus Cambridge. 



Our two species are separable as follows: 



Table of the Species. 



I. Shield of female broadest on first third; divisions of tarsi II, III, and IV 



subequal in length; capitnlum less angulate on side piitufi. 



Shield of female broadest on middle third; basal division of tarsi II, III, and 

 IV much shorter than apical; capitnlnm more angulate on sides signatus. 



Ceratixodes signatus Binila. 



Female. — Shield reddish brown, legs paler, abdomen yellowish 

 brown. Capitulum (PL II, fig. 3) very broad, lateral angles acute, 

 hind angles not distinct, porose areas occupying nearly the whole 

 of upper surface, palpi short and thick, with some scattered bristles, 

 third joint but little swollen on inner side at base. Shield (PL II, 

 fig. 1) much longer than broad, broadest on middle third, the lateral 

 lobes only well separated in front, surface with many rather small 

 punctures, abdomen with a few very short hairs; the abdomen, in 

 swollen female, is very elongate; legs large and very slender; tarsi 

 (PL II, fig. 2) tapering to tip; coxaB I, II, and III (PL II, fig. 1) 

 with a small apical process behind. Stigmal plate circular, peritreme 

 circular, surface with many minute granulations. 



Length of female shield, 1.5 mm. 



Several specimens from Pacific Grove, CaL, on a cormorant. It was 

 described by Birula from Unalaska Island, and through the kind- 

 ness of that gentleman I have examined one of his cotypes. Appar- 

 ently the same species has been described by Neumann from Japan as 

 Ixodes parmrostris. 



Ceratixodes putus Cambridge. 



Female. — Shield and legs dull yellowish; abdomen pale brownish. 

 Capitulum (PL II, fig. 4; PL IX, fig. 6) more than twice as broad 

 as long, rather wider at outer base of palpi than elsewhere, hind 

 angles not prominent, porose areas large, approximate, pointing out- 

 ward. Palpi (PL II, fig. 4) rather large, second joint with four 

 long bristles on the inner side below, third joint with a swelling on 

 the inner side near base, the apical joint large, with a bristle each 

 side. Shield (PL II, fig. 6) plainly longer than broad, broadest on 

 anterior third, somewhat concave and tapering behind, tip rounded, 

 the lateral lobes distinctly separated, surface with many irregularly 

 placed deep punctures, not all of an even size; abdomen above and 

 below with many long hairs. Legs large and slender, the tarsi (PL 



II, fig. 5) strongly humped above before tip; coxa? wholly unarmed. 



