2/4 Records of the I ndian Museum. [Vol. IV, 



J Veins on posterior half of wing, viewed 

 from certain directions, as distinct 

 as those on anterior half. Hind 

 tibiae black . . . . . . approximatus , sp. 



nov. 



J J Veins on posterior half of wing less 



distinct than those on anterior half. 



K Hind tibiae dark brown, lower branch 



of 4th vein and upper branch of 5th 



vein not reaching border of wing . . defectus, sp. nov. 



KK Hind tibiae black. All the veins 



attain the wing margin . . . . proximus, sp. nov. 



N.B. — The above table is constructed for the sake of con- 

 \ cnience only, and does not illustrate the affinities of the species. 

 The order in which the descriptions are arranged is intended to 

 represent their affinities. Schiner and others have adopted the 

 relative lengths of the basal section of the 3rd longitudinal vein 

 and the anterior cross-vein, as the preliminary distinction in 

 separating the species, but in view of its decided variability in 

 obscuripennis and the closely allied European marci, L., it seems 

 safer to distinguish the species comprised in the present paper by 

 their conspicuous differences of colour. 



Bibio hortulanoides, mihi, sp. nov. 



cf $ . Darjiling district. Long, cf 14 mm., 2 11-12 mm. 



Head. — In cf eyes closely contiguous from the vertex to 

 immediately above the antennae, leaving a very small frontal 

 triangle, the eyes with dense dark brown hair. Proboscis, palpi 

 and antennae black with thick long dark brown hair, which is also 

 long and thick behind the vertex. Vertical triangle conspicuously 

 elevated bearing the three ocelli. 



In the ? the frons is one-third the width of the head, shining 

 black, with some black short hair, ocellar tubercle as in (f . The 

 other parts as in the cf but the hair is more blackish than brown, 

 whilst the pubescence on the proboscis, palpi, under side of head 

 and behind the eyes is yellowish. 



Thorax. — In ct' , dorsum, scutellum and sides shining black, 

 densely covered with blackish brown hair. In the $ the dorsum 

 is bright brownish 3^ellow (with microscopic concolorous pubes- 

 cence), the colour very sharply delimited. The remainder of the 

 thorax black, moderately shining, with short black hairs. Scu- 

 tellum and scutellar ridge black ; metanotum black. 



Abdomen. — In a' , shining black, wholly covered on all sides 

 with thick blackish brown hair. The genital organs shining black, 

 obtuse, bilobed. In the $ , bright brownish yellow with short 

 concolorous pubescence; belly similar. Genital organs incon- 

 spicuous. 



