front of the middle, strongly rounded on the narrow front margin, and has the 

 front and sides with the scattered coarse punctures sparsely rather coarsely 

 asperate. 



Variations. -There is a moderate variation in length, from 3 mm. to 3 8 rnm. 

 in our material. The colour pattern, formed by the light-scaled sections of the 

 interspaces, is rather variable. In some the elytra are almost entirely grey; in 

 many the light sections form a broad transverse V-shaped band about the middle 

 of the elytra. There is usually some trace of this transverse band on perfect 

 specimens, and the grey patches in front of and behind the scutellum are constant. 



Pseudohylesinus sericeus Mannh. 



Original Description. Bull. Mosc., 1843, 296: Hylugus sericeus Eschscholtz, 

 Brevis, rufopiceus, grisceo-sericeus, thorace carinato, elytris squamulis, brunneis, 

 cinereisque variegatis, antennis pedibusque runs." 



" Longit 1, 1 lin. Latit. |, f lin. 



" Dejean. Cat. 3 me. edit. p. 331. 



" Habitat in insula Sitkha, D.D. Eschscholtz et Blaschke." 



Bull. Mosc., 1852, 356, " Var. b, minor, niger, atrohispidus, pedibus piceis, 

 elytris obsolete cinereo-squamulosis. Sitkha truncis pini subcortice rarius." 

 This is possibly distinct. 



It was referred to by Leconte, Trans. Ent. Soc. 1868, 169, 170, as with 

 thorax feebly constricted in front. He describes it in Rhynch, page 380, as 

 follows: " H sericeus Mannh., Bull. Mosc. 1852, 385, Hylugus ser. Mann., ibid, 

 1843, 296, ibid, 1852, 356. Var. H. nebulosus Lee., Proc., Ac. Nat. Sc. Phil, 

 1859, 285." 



" Alaska to California. Length 3 mm., 12 inch. The outer interspaces of 

 the elytra are marked with a row of small acute tubercles. The bristles of the 

 elytra are longer in the type than in the variety, and the sides of the prothorax 

 seem a little more rounded, but otherwise there is no special difference. The 

 elytra are not banded as in the preceding species, but confusedly tesselated. I 

 observe no sexual characters, and the front is finely carinate in the four specimens 

 examined. The head is more prolonged than in the other species. The club of 

 the antennae is subovate pointed, about twice as long as wide, annulated with 

 straight sutures." 



The type of Leconte's description is probably distinct from mine described 

 here as grandis and differs chiefly as follows: a more slender species, with longer 

 hairs ; a male, with the pronotum almost transversely oval, the frontal lobe of the 

 pronotum less distinct; the elytral hairs much longer. Otherwise it agrees 

 closely with grandis. I have seen only the one example. There are four specimens 

 under this name in the Leconte collection. The second is nebulosus Lee., a good 

 species; the third granulatus Lee. 9, and the fourth the species here described as 

 grandis. The type of his description was from California. 



The species referred to by Hopkins, U. S. Div. Ent., Bui. 48, page 20: 'The 

 Shore Pine Hylesinus (Hylesinus sericeus Mannh.) excavates one short longi- 

 tudinal gallery from the entrance burrow and small cavity in the living bark of 

 injured, dying, and recently felled shore pine. Newport and Seaside, Oreg. 

 Common. Also recorded from California and Alaska," is probably distinct 

 from grandis, and possibly the same as Leconte's first specimen. 



The species grandis is known to us only from grand fir and Douglas fir, 

 neither of which occurs in the region of Alaska from which Mannerheim's specimen 

 probably came, while shore pine, from which Dr. Hopkin's species was taken, is 

 a common Alaskan coast tree. While it is possible that grandis may breed in 

 Alaskan species of Abies or even in pine or spruce, it seems at present more 



