XYLEUTES. By H. G. Dyar 1267 
spot is often traceable and occasionally also a black streak at the end of the areole and along the stalk of the 
veins 7 and 8. Mexico, Guatemala. 
H. comisteon Schs. (167 e). Dingy white like pyracmon; the longitudinal stripe is brown, somewhat ex- conristcon. 
tinct, a costal-marginal spot is in the second distal third; the markings consist of brown transverse striae which 
are only here and there forked or reticular. Costa Rica; Panama. 
X. discreta sp. n. (167 e) is smaller than comisteon, though the size is of little importance in this group; discreta 
the central band is dark brown, distinctly marked, coherent; the brown striae distinct, not any of them being 
reticularly confluent with another. Hindwing reticulated with many striae which are absent in comisteon. Body 
very densely and abundantly clad with dingy white scales, white and smooth in comisteon. Type: 1 from 
Brazil (J. Arp, Coll. Dognin) in the U. S. National Museum. 
X. cognata Wkr. (= mathani Schs., oberthuri Houlh., mexicana Houlb .) (181 d). Dingy whitish and cognata. 
marked like pyracmon , but the markings are composed of small distinct spots, often circular, never reticular; 
the markings are generally brownish black, sometimes also of a brown tan-colour. The species varies much in 
size like all the Cossidae do. cognata was founded upon a small specimen, mexicana , is the same. Schaus and 
Houlbert considered the larger specimens ( mathani and oberthuri) to be separate species, but I cannot find the 
least specific difference between them. From Mexico to Brazil and Peru. 
X. strigifera Dyar (181 d). Dingy white, the forewing with rather densely arranged thick greyish black strigifera. 
striae which are irregularly confluent at the cell-end, forming a discal spot which has often a bent shape; costal 
margin densely spotted; a smaller species, generally smaller than ramosa Schs. Mexico and Central America. 
X. albogrisea Dogn. (167 f). Forewing throughout dingy dark grey, the markings only traceable as albogrisca. 
brownish grey clouds, a broader brownish one of which cuts off the basal area obliquely, a more or less developed 
broad brown median band is also present. A diminutive species from the Amazon Region of Brazil. This small 
insignificant Cossida presumably represents the southernmost branch of the following group. 
Subordinate group: Psychonoctua Grt. 
The following 12 species represent a group widely distributed in the Antilles, on the northern coast- of 
the continent, and from Arizona through Mexico to Central America. It is so difficult to distinguish them 
specifically, that I found it best to separate them geographically. The larvae bore in the trunk of coffee, in the 
Antilles in Cassia. Each island seems to have its particular species. On the continent there are at least two 
species which have a very wide range. 
X. jamaicensis Schs. Light grey, slightly clouded and reticulated darker; a broad dark basal area is jamaicensis. 
somewhat obliquely cut off outside; a round black dot in the disc; there are often traces of a broad brown shadow 
through the centre of the wing as in albogrisea. The $ has less distinct markings, the dark basal area is brownish 
and faded. Jamaica. 
X. lillianae Linds. (167 f) is exactly like jamaicensis except the somewhat lighter colouring; the dark lillianae. 
basal area of the forewing is pale, somewhat more obliquely cut off and receding a little below the cell; the brown 
central shadow is absent, but the discal dot is black. The $ is more faded brownish, the dark basal area is entirely 
absent, the discal dot is indistinct or quite absent, the ground indistinctly striated. From Antigua, Montserrat, 
and Barbados. The specimens before me were bred on coffee and Cassia glauca. 
X. muricolora sp. n. scarcely differs from lillianae, the dark markings are still more indistinct. The $$ muricolora. 
are grey with but feeble traces of the rosy brown suffusion of lillianae. From Porto Rico, bred on coffee. Type 
from Aguadilla (Porto Rico), in January, in the U. S. National Museum. 
X. personalis Grt. ( 1 67f) shows very contrasting colours, the striae insignificant or obsolete: the light personalis. 
grey ground-colour predominates; the discal spot is black and distinct, the basal area likewise distinct, but 
confined to a stripe along the costal margin, the brown median band is generally distinct. The $ exhibits 
distinct black striae on a purely grey ground, the discal dot moderately distinct, the basal area not dark. Cuba. 
X. benestriata Hmps. This form which is not at hand has, according to Hampson, whitish forewings benesiriata. 
scantily marked with scattered brown striae which are black behind the middle of the costal margin; a small 
