374 Mr. F. Smith's descriptions 



Fam. TENTHREDINIDiE, Leach. 

 Genus Hylotoma, Fabr. 



--^ 1. Hylotoma ni(jritarsis. 



Female. — Length 5\ lines. Bhie-black; the palpi rufo- 

 testaceous; the antennae black. Thorax shining, and 

 covered Avith a fine hoary pile, observable in certain lights ; 

 the wings flavo-hyaline, the nervnres fnscous, the costal 

 nervure yellow ; a brown fascia crosses the anterior wings 

 from the stigma, the latter dark brown ; the tibire yellowish- 

 white, the mtermediate and posterior pairs black at their 

 apex; the anterior tarsi pale, the tAvo apical joints blackish. 

 Abdomen shining, the apex more or less pilose. 



Hab. — Hiogo. 



This species most closely resembles the Hylotoma 

 violacea of King. 



2. Hylotoma imperator. 



Female. — Length 4 lines. Shining blue ; the antennre 

 black ; the wings dark fuscous, with a blue iridescence, 

 palest at their apical margins ; the legs obscurely blue. 



Male. — Differs in having the antennae longer than the 

 head and thorax, extending to the middle of the abdomen, 

 and having a fringe of fine pubescence beneath. 



Hah. — Hiogo. 



This species closely resembles the Hylotoma enodis, but 

 in both sexes the antennae are considerably longer and 

 thicker. This must be a common species, twelve examples 

 having been received. 



3. Hylotoma humeralis. 



Female. — Length 3^ lines. The head, and the two 

 lateral divisions of the mesothorax, black, with more or 

 less of a blue or green tinge ; the pectus is of the same 

 colour ; the thorax otherwise reddish-yellow ; the abdomen 

 yellow ; the legs black, with the femora tinged with blue ; 

 tibise and tarsi black ; wings subhyaline, and clouded with 

 fuscous towards their base, where they are darkest. 



Var. The yellow central space on the mesothorax 

 blackish in the middle. 



_ Male. — Smaller, and with the head and thorax entirely 

 nigro-^neous; the legs yellow, with the base of the femora, 

 the apical joints of the anterior and intermediate tarsi, the 



