Dr. Heinekcii's Descriptiun of Cerascopus. 37 



a constriction and depression just before the second pair of legs: 

 posterior division elongate and irregular in figure and surface, in conse- 

 quence of the articulations of the legs; anterior rather liaear and 

 giving origin to the raptorious legs at its anterior extremity. Tarsi cf 

 the latter gradually and finely pointed, and slightly curved inwards, and 

 together with the tihi(B received into a groove between two rows of spines 

 and a strong prominent curved spur at their termination Oi\ the thighs. 

 Second joint of the tarsi of the other legs shortest, and third longest. 

 Three joints in all, with two curved, simple, exserted terminal claws. 



Genitalia $ in statu quiescente adeo compressa ut vix investigari 

 queant ; nee in coitu observare contigit. 



Genitalia $ distincta, extantia, antrorsum sursumque flexa. Penis 

 membranaceus, pellucidus, truncatus, inter crura prehensorum (quorum 

 duo laterales appositi, alter inferior posticus) exsertus. De coitu, 

 semel tantum viso, tam ob brevissiraum spatium temporis quo peractum 

 est, quam ob difficilem observandi rationem (insectis vase vitreo inclusis}, 

 hiEC tantum quoad partes observata sunt : scilicet, cruribus prehensorum 

 expansis vel divaricantibus, penem deinde extensum fuisse; interea, pedi- 

 bus raptoriis feminse utrisque ab alterutro maris comprehensis, thoracem 

 ejus am plexus corpusque incur vans, coitur. Alio tempore fefellit marem 

 spes pedes raptorios feminaj comprehendendi ; ilia itaque evasit. 

 Illaquidem semper invita, idcirco nonnihilpericulirespicere marem videtur; 

 quippe post coitum sese invicem vitant, nee (ut semel ambobus in vase 

 relictis) aliquando femina marem necare recusat. Coitum cum femina 

 gravida semel a mare inceptum vidi, sed infelici casu : ex hoc patet, 

 marem nisi experiendo feminse aftectus nescire. Quarta circiter hebdo- 

 mada post coitum, $ ponlt ova, ovalia, albida, pellucida, vasi adhaerentia, 

 dispersa, numero incerta, larvis decimam post diem exclusis : impregna- 

 tione una ad tres quatuorve ovorum depositiones sufficiente. Meta- 

 morphosis nulla aut vald^ indistincta. 



The insect is found from March to December (seldom if ever during 

 the intermediate months) stalking on the walls of rooms, and almost 

 invariably after dusk ; those in confinement are more or less torpid 

 during the day. The motion when the pace is quickened, or when about 

 to take prey, is more elastic and librating (if the term be allowable) than 

 tremulous and vibratory, so that it cannot be strictly called tipuloux; it 



