250 [November 



armed with scattered, but very well developed tooth-like tubercles. Elytra 

 dark brown, lono-er than wide (3 : 2), wider than pronotum, and a little broader 

 behind the middle than at base ; their anterior and median areas glabrous, the 

 declivity clothed with very fine yellowish-brown scales ; the striae deeply 

 impressed, narrow, interspaces wide and convex on the posterior half; all the 

 interspaces transversely rugose, the rugosities finer towards declivity and 

 changing there into very fine, densely-placed punctures ; on the declivity the 

 interspaces 1st, 3rd, 5th, 7th, and 9th, as well as the apical margin, are armed 

 with rather strong tubercles and also somewhat elevated, the 3rd and 9th con- 

 joined, 6th and 7th separate and shortened (fig. 9). Underside almost black, 

 covered with downy, simple, and barbed hairs ; episternum and epimerum 

 densely clothed with silvery-white, barbed scales. Legs dark brown with 

 reddish-brown knees and tarsi. 



The undivided anterior proventricular plate (fig. 10, A, I) well chitinized 

 on both sides between 1 and 9-10 parallel rows (a), the first 5 rows continuous 

 and unserrated, the first sinuated in the middle, the ribs of the slope on the 

 posterior plate (II) slightly serrated on upper part of the plate [b). 



Certain characters of this species do not correspond exactly with those of 

 the genus Hylastinus Bedel * : more thorough examinations are wanted ; in a 

 preliminary manner it can be placed under a new subgenus, Hylastinoides. 



Vicinity of Vladivostok, 1915 ; 3 specimens f under the bark of 

 Alnus sp. ; Mr. N. Delle, collector. 



Myelopliilus pilifer, sp. n. 



Length 3*6 mm. Allied to Myelophilus minor Hart., but distinguished by 

 the following characters : (1) interspaces of the basal half of tJ'e elytra pro- 

 vided with rugosities ; (2) interspacial punctures dense and nearly as large as 

 those of the striae ; (3) in addition to the erect hairs arising from the bases 

 of the interspacial tiibercles, there are fine, declining reddish hairs on 

 the interspacial punctures (fig. 11 A) ; (4) galleries resembling those of 

 M. piiiiperda L. : egg-tunnel longitudinal, but larval galleries considerably 

 shorter than those of M. inniperda L. 



From M. puellns Reitt. this species differs in having erect hairs on the 

 eiytral interspaces and tubercles on the 2nd interspace on the declivity. 



Under the bark of Pinus Jcoraiensis Sieb and Zucc. Vladivostok, 

 1915, B. Berger, collector. 



EXPLANATION OF PLATES. 



Platk XV. 



Fig. 1. Eccopfogaster jacohsoiii, sp. n. Abdomen, 



2. „ ,, „ Proventricular plate : a, anterior plate; 



b, posterior plate, with apical laminate 

 teeth. 



* Bedel, L., " Fauna de Cole'optferes du bassin de la Seine," Ann. 8oc. Ent. France. 1888, p. ."^Ss ; 

 NUsslin, O., " Zur Phylogenie iind Systematik der einheimiachen Hylesiniden," Nature. Zeitschr. f. 

 Forst-u. Landw., 1912, ]>p. 267-2Sit ; Fueha, G., " Morphologische Studien iiber Borkenkafer II., 

 Die europiii-^cUen Hylesiuen," Miinchen, 1912. 



t O.ie of these specimens, much damaged and without abdomen, was used for the examination 

 of the proTentriculus. 



