131) TllK CANAIJIAN KNTHiH»UHilST. 



prothorax about as long as wide, narrower than the elytra, parallel, 

 arcuately narrowed anteriorly, the apex only extremely briefly subtubulate ; 

 elytra three-tifths longer than wide, the humeri exposed, laterally prominent 

 and rounded ; apex obtuse ; striae represented by fine clefts separating 

 the indument. Length, 3.75 mm.; width, 14 mm. ('alifornia (San Diego). 

 The large scales are of peculiar structure, being thick and apparently 

 excessively minutely and densely puberulenl, the hairs so disposed as to 

 give sometimes a minutely and extremely closely strigilate effect. 



Microtych'us, n. subgen. 

 In this subgenus of Tychius, the structure throughout is nearly as in 

 the preceding, including the 6-jointed aniennal funicle, but the body is 

 very much smaller, generally minute in size and the tarsi are small and 

 slender, this being the chief distinctive structural feature. The femora are 

 not denticulate beneath. The type is Tychius setosus I^c. A consider- 

 able number of new forms have come to light since my revision of them 

 (Ann. N. Y. .\cad. Sci., Vf, 1892, p. 420 — under subgenus IV), and I have 

 arranged these new species in the form of a table as foliows : 



Species of the setosus and sub/asciatus type, the elytra, except in erraticus, 

 having patches of large pale scales, separated by subglabrous areas 

 having only decumbent recurved stout hairs sparsely placed, the 

 elytra, especially posteriorly, bristling with very stiff erect pale spines, 

 generally lanceolate, flattened and frequently with their edges 

 minutely seiulose or serrulate 2 



Species of the variegatus, simplex, sulcatulus type, without erect bristles, i i 



2 — Elytra without trace of large rounded scales at any point. Body pale 

 testaceo-ferruginous in colour throughout, rather shining : basal part 

 of the beak and front densely punctate and clothed sparsely with short 

 fine hairs, the occiput scaly, the dorsal surface of the beak with a 

 median glabrous line basally ; prothorax nearly as long as wide, 

 slightly narrowed apically, densely, not very coarsely punctate, each 

 l)uncture with a scale-like decumbent hair, without large scales ; elytra 

 much wider than the prothorax, with uninipressed series of coarse 

 punctures, each bearing a slender dectuubent pale scale like hair, 

 with others similar, sparsely placed on the intervals, a single scries of 

 moderate suberect recurved spiniform scales also along each of the 

 latter ; under surface with broad white scales. Length, 1.3 mm.; 

 width, 0.75 mm. I'exas (.Alpine), Wickham erraticus n. sp. 



P'.lylra and pronotum with patches of large rounded or oval scales 3 



