B4 INSECTA SAUNDERSIANA. 
Cacosis NiaER, Plate 3, fig. 1. 
Sargus niger, Wied. 
? 
Genus PTILOCERA, Wiedemann. 
PrrLocERA conrinvua, Plate 3, fig. 2. 
Fem. Cyanea, thoracis lateribus purpureo variis, antennis nigris septem- 
ramosis, apice albis, pedibus piceis, alis fuscis margine postico 
cinereis. 
Body dark blue: head slightly covered in front with hoary down : 
eyes pitchy ; all the facets small: mouth black: feelers black, white to- 
wards the tips, adorned with seven feathered branches: chest adorned on 
each side with purple reflections: abdomen much broader but not longer 
than the chest, slightly covered towards the tip with hoary down: legs 
pitchy: wings dark brown, gray along the hind border, which is almost 
colowless at the base; wing-ribs, veins and poisers pitchy. Length of 
the body 3} lines ; of the wings 8 lines. 
Java. 
Fam. ASILICI, Zatr. 
The following twenty-four genera have been formed of this family ; 
Dioctria, Microstylum, Diseocephala, Brachyrhopala, Dasypogon, Rhopa- 
logaster, Xiphocera, Laphystia, Laphria, Lampria, Hoplistomera, Mega- 
poda, Ceraturgus, Craspedia, Mallophora, Promacha, Polyphorius, Tru- 
panea, Asilus, Erax, Protacanthus, Ommatius, Damalis, Atomosia and 
Leptogaster. 
The European species of Dasypogon have been divided by Loew into 
the following seventeen groups; Saropogon, Dasypogon, Stenopogon, 
Habropogon, Xiphocerus, Holopogon, Eriopogon, Heteropogon, Isopogon, 
Oligopogon, Stichopogon, Lasiopogon, Cyrtopogon, Anavolius, Acnepha- 
lum, Pyenopogon and Crobilocerus. 
His divisions of European Asili comprise the following sixteen groups ; 
Lophonotus, Macg., Eutolmus, Machimus, Mochtherus, Cerdistus, Stilp- 
nogaster, Itamus, Tolmerus, Epitriptus, Antiphrisson, Asilus, Rhadiurgus, 
Pamponerus, Antipalus, Echthistus and Philonicus. 
