MAR 19 189? 



yiM-ah, IS9S.) 49' 



having their angles (viewed laterally) only very slightly produced into a small tooth, 

 the structure being analogous to that existing in the type-form, but the open disc is 

 much larger, and the production of its side-pieces very much less. 

 Fig. 1, apex of abdomen of 2 from above ; 2, same from side. 



Sericostoma flavicorne, Rev. and Synops., p. 230, Suppl., p. 

 xlviii, and First Add. Suppl., p. 20. — I am of opinion that examples 

 in Albarda's collection (whereof he presented me with one (^) from 

 Beirut, Syria, certainly pertain here. The penis-sheaths (see figure) 

 show an approach towards a condition sometimes present in /S. persO' 

 natum, and it is probable that the species should more immediately 

 follow it. The antennae are slightly annulate. I have a note that in 

 the ? the anterior wings are wholly cinereous with blackish fringes, 

 in which is a whitish spot at the termination of the 7th apical sector. 

 There now seems no reason to doubt its distinctness from S. Schneideri. 



Sericostoma Seltsii, Rev. and Synop., p. 231 ; First Add. Suppl., 

 p. 20. —I have seen in Albarda's collection 4 ^ and 1 ? of this from 

 San Ildefonso, Spain (E. Pictet's locality). The species (or " form ") 

 is near S. Schneideri, and differs chiefly therefrom in the antennae, 

 which are darker and much more distinctly annulate. I give a figure 

 of a penis-sheath. 



SeeICOSTOMA MESOPOTAMIOUM {n Sp.). 



Of the group of turhatum. Antennae blackish-fuscous, not very distinctly annu- 

 late with greyish-yellow. Hairs of head and prothorax almost wholly black (there 

 are indications of a slight admixture of reddish-golden). Maxillary palpi of S very 

 prominent (the internal "fluff" nearly white). Labial palpi blackish, but the 

 terminal joint dingy yellowish. Legs bright yellow, the femora tinged with fusces- 

 cent. Wings {$) clothed with black pubescence. 



In the (? the anal parts are yellow (the inferior appendages clothed with black 

 hairs). Penis sheaths (see figure) remarkable for the disproportion in the length of 

 the branches, the lower being only one-third the length of the upper ; both branches 

 are stout, the upper slightly upturned at the apex. 



Expanse, S > 22 — 25 mm. 



Mesopotamia (Malatia, 4 ^ , Albarda's and my collection). 

 A very distinct form, in consequence of the great disproportion 

 of the two branches of the penis-sheaths. A very black species, allied 

 to Selysii and Schneideri by the annulate antennae. 



Sericostoma subjequale {n. sp.). 

 It seems to me that the examples from North Italy and South 

 Tyrol alluded to at p. 21 of the First Add. Suppl. under S. pedemon- 

 ianum, and of which three figures (20 to 22) were given on PJ. ii in 



