826 JOURl^AL, BOMBAY NATURAL HIST. SOCIETY, Fol. XXVIl. 



tempora in certain lights are seen to be covered with a very short silvery pubes- 

 ence, the hairs on the face are much longer, and decumbent ; on the vertex 

 and round the antennae they are erect. 



I have extracted the genitalia, and they appear to me exactly like those of 

 tetrazonius. But I do not think that this and the other points of agreement 

 between forms differing so much in other characters (stature, colour, prlosity, 

 etc.; etc.) would justify me in treating them as actually conspecific, 



10. Halictus platycestus, Dours.— 3 ^ (^, 5 $ $ , falish (P), 10th July. 



"322, Amara (M), " on Sunflowers," 9th— 12th 

 September. 

 I think these are conspecific with a $ which I received, named as above, from 

 the late Professor Perez. 



11. Halictus leucozonius, Kivh J. — 1 $, Amara (M), April. 



1 2 , Baquba (M), 30th June. 

 2 2 2, Baghdad (M), 26th July. 



1 2 , Talish (P), 10th July. 



12. Halictus chaldceorum, n. sp. — 3 $ <^, Amara (M), 6th September — 31st Oct. 



2 2 ? » Shahroban (M), 31st August. 



I can find no description to suit this species. It is a very diminutive member 

 of the leucozonius group (5 to 6 mm. long). In its short broad form, in coloration, 

 and in the sculpture of the propodeum, it comes near interruptus, Panzer. It 

 seems also alUed to quadrinotatus, Kirby, and lativentris, Schenck (^=decipiens, 

 Perkins). But it differs from all these in having the postscutellum densely to- 

 mentose in both sexes, in the uninterrupted and very conspicuous (almost, 

 squamose) basal fascise on the intermediate abdominal segments, in the charac- 

 ters of the (^ genitalia, and the structure of the inner hind calcar of the 2 

 as well as in other minor details. 



In the ^ the antennse (beneath from the 3rd joint onwards), and the tegulse 

 are fulvous — almost yellow. The clypeus is narrowly yellow at the apex, but 

 the labrum is black. The tarsi of all the legs are yellow, and the tibiae (especially 

 the anterior pairs) are more or less yellow within. The propodeum has a sharply 

 defined, undulately rugose, basal area, which is narrowly truncate (not rounded) 

 at its apex. The mesonotum is opaque, very finely and closely punctured. The 

 postscutellum densely clothed with short erect pihe, completely hiding its actual 

 surface. The thorax and legs are hirsute (much more so than in interruptus). 

 The abdominal tergites are very shining ; finely but not closely punctured on 

 their discs, but with the depressed apical margins practically impunctate. 

 Tergite 1 is pilose at the base ; 2, 3, and 4 have entire and very conspicuous basal 

 fasciae of white and partly scale-like hairs. The 4th ventral segment is strongly 

 excised at its apex and conspicuously fringed with long, white, decumbent hairs. 

 The wings are clear, and the stigma yellowish. 



The 2 is very like the ^, but the mesonotum is less closely punctured and 

 slightly shining, and the disc of the 1st abdominal tergite quite impunctate. 



The antennae beneath and the tarsi 

 are darker than in the ^, but at least 

 ^ more or less fulvescent. The inner 



''•'''^:J^ ,hind calcar is unlike that of any 



Halictus 2 known to me, being armed 

 with a single pair only of long blunt 

 Fig. 3. Hi7id Calcar of H. spines (See Figure 3). 1 notice also that 



Chaldceorum 2 • the posterior ocelli are considerably 



nearer to the compound eyes than to 

 each other. This is not the case in 

 any of the other females with which 

 I have compared these specimens. 



