REVISION OF GENUS TACHYPORUS — ^BLACKWELDER 45 



transverse groups; with an irregular series of larger punctures along 

 the suture but unusually distant from it; lateral series with four 

 punctures and with an additional discal puncture near the humerus. 

 Abdomen above a little more distinctly punctured than elytra; 

 penultimate segment with a transverse row of large punctures; be- 

 neath punctures more distinctly muricate; a few of the large bluntly 

 muricate punctures on the apical segments. Eighth tergite of male 

 rounded; eighth sternite feebly notched, the notch twice as wide 

 as deep, the apex rounded and the angles feeble. Eighth tergite 

 of female 4-lobed, the median pair a little longer, narrower, and 

 separated two-thirds to base ; eighth sternite narrowly rounded, with 

 a single series of silken hairs. 



Type locality. — Alaska, between Kapid River and Rampart House. 



Types. — Holotype (a female collected from between Rapid River 

 and Rampart House, Alaska, June 14, 1912, by J. M. Jessup) and 

 19 paratypes (same data), U.S.N.M. no. 50895; 4 paratypes (same 

 data) in collection of the writer. 



Localities represented.— '^i^tj-s^^^n other specimens represent the 

 following additional localities: Alaska (100 miles north of Ram- 

 part House; Porcupine River, 100 miles north of Fort Yukon), 

 British Columbia (Victoria, Vancouver Island), Washington (Pull- 

 man; Tenino), California (Humboldt County; San Francisco 

 County), Alberta (Banff Springs; McLeod), Saskatchewan (Swift 

 Current; Oxbow), Montana (Helena; Bear Paw Mountains), Wyo- 

 ming (National Park), Michigan (Sault Sainte Marie; Michepoc- 

 ten ; Isle Royal ; Whitefish Point ; Gargantua ; Pointe Aux Pins) . 



This is a coimnon northern species hitherto confused in the com- 

 plexes known under the names jocosus and chrysomelinus. 



TACHYPORUS TEHAMAE, new species 



Form robust and moderately convex. Light brown, head above 

 and disk of pronotum somewhat darker. Antennae with segments 

 all elongate, apical only one-half longer than the tenth. Third seg- 

 ment of maxillary palpi scarcely dilated, fourth long, acicular. 

 Pronotum with transverse band of basal fifth paler than the rest; 

 sides straight from basal third; not wider than the elytra. Elytra 

 very finely and irregularly but densely submuricately punctured, 

 punctures frequently in transverse rows; irregular sutural row of 

 larger pimctures present; marginal row of five punctures, and with 

 a submarginal row of three. Abdomen above more feebly punctured 

 than elytra; beneath a little more distinctly than above, with a few 

 of the larger punctures on the apical segments. Eighth tergite of 

 male rounded ; eighth sternite with triangular notch, the notch one- 

 half wider than deep, apex not rounded, angles obsolete. Eighth ter- 



