Sept., 1912.] Matheson : Haliplid^ of North America. 171 



Haliplus nitens Leconte. 



Haliplus ni ens Leconte. Lake Superior, Agassiz and Cabot, 1S50, p. 212. 



General color pale yellow with black markings on head, thorax and 

 elytra. Length 3.75 mm. 



Head pale straw color, a black spot on vertex, punctate except a small 

 area just in front of the black spot ; labrum slightly emarginate, rounded at 

 sides, a row of small setae on its anterior margin. 



Pronotum with a small dark spot on its anterior margin ; punctate, the 

 punctures at the base larger and black, the others smaller and of the same 

 color as the pronotum ; disc sparsely punctate, with a transverse depression. 

 Prosternal ridge not margined, almost flat, slightly convex transversely, 

 convex longitudinally, strongly punctate. Abdominal segments smooth, shin- 

 ing; fourth and fifth, each with two irregular transverse rows of punctures 

 near the middle ; the last segment triangular in outline and punctate. Legs 

 pale yellow; posterior coxae punctate, rounded behind, reaching the fourth 

 segment of the abdomen. 



Elytra pale yellow with indistinct black spots and markings small and dis- 

 tributed as shown in Plate V. Each with ten rows of shallow punctures, the 

 outer row of the same color as the elytra, the others black ; intervals, each 

 with a row of small punctures ; margins of elytra regularly rounded to tip, not 

 sinuate. 



This species has been placed by Crotch (1873) as a pale variety 

 of cribrariiis Lee. From an examination of Leconte's types I feel 

 confident that nitens is a good species, easily recognized by its smaller 

 size, paler color and especially by the shallow and smaller punctures 

 of the elytra and the transverse depression across disc of pronotum. 



Habitat. — Michigan (St. Ignace, Leconte); Wis. (Bayfield). 



Type— In the Museum of Comparative Zoology, Cambridge, Mass. 

 Haliplus tumidus Leconte. 

 Haliplus luinidus Leconte. Trans. Amer. Ent. Soc, 1880, VIII, p. 166. 



Broadly and acutely ovate, dull yellowish red, shining; prothorax punc- 

 tured, more sparsely on the disc, more coarsely near the base. Elytra rapidly 

 widened from the base for one fifth the length, then obliquely rounded and 

 narrowed to the tip ; (widest part fully one half wider than the base of the 

 prothorax) ; striae composed of rather coarse punctures becoming smaller 

 behind, interspaces each with a row of small distinct punctures ; spots narrow, 

 piceous, ill-defined, presenting the appearance of a sutural stripe, with two 

 oblique interrupted branches and a marginal blotch near the tip. Prosternum 

 coarsely punctured, perpendicularly declivous in front, deeply and broadly 

 sulcate, strongly margined at the sides, slightly convex along the middle for 

 the hinder half of its length ; metasternum with a deep square impression, 

 the sides of which are elevated, sparsely and coarsely punctured, coxal plates 

 less coarsely pvinctured. Length 3 mm. 



