Microscopical Essays, 



S§7 



225. Trichoda Pupa. 



Trichoda cucullata, fronte crinita, cauda i»flexa. This tri- 

 choda is hooded, the front hairy, the tail inflected. 



At firft fight it refembles the pupa of the gnat. The body is 

 rather round, pellucid, and may be defcribed as confiding of 

 three parts ; the head, which is broad, and as it were hooded, 

 the top furnifhed with very fmall hairs, a tranfparent veficle oc- 

 cupies the lower region of the head, and a certain production 

 hangs over the breaft from the bafe of the head, refembling the 

 fheath of the feet in the pupa of the gnat, 



226. Trichoda Lunaris. 



Trichoda arcuata, teres, apice crinita, cirro caudali inflexo. 

 Arched trichoda, round, the apex hairy, the tail bent. 



This animal culum bends itfelf in the form of an arch, is round 

 and cryftalline, the hind-part fomewhat fmaller than the fore- 

 part ; the interlines are with difficulty diftinguiftied. The edge 

 of the back, and the part near the tail, are bright and clear. 



227. Trichoda Bilunis. 



Trichoda arcuata, depreffa, apice crinita, cauda bifeta. Arch- 

 ed flattened trichoda, the apex hairy, two little bridles proceed- 

 ing from the tail. 



4 B 2 



228. Tri- 



