USED IN ENTOMOLOGY. 25 



Palpi, articulated moveable filaments in the mouth of insects, 

 generally shorter than the antenna; divided into labial and 

 maxillary palpi. 



Panduriform, fiddle- shaped ; oblong, broad at the two extremi- 

 ties, and contracted in the middle. 



Papilionaceous, butterfly-like. 



Papillary,, having the apex semiglobular ; somewhat like a 

 nipple ; this term ought to be distinguished from verucose. 



Papillous, pimpled^; having the surface covered with raised dots 

 or pimples. See verucose. 



Pappus, down. 



Parallelogram, a quadrilateral, right-lined figure, whose oppo- 

 site sides are parallel and equal to each other. 



Parapleurum, that segment of the postpectus, which is situated 

 one on each side of the acetabulum, behind the scapula ; in 

 some genera are two on each side ; they may then be distin- 

 guished into anterior and posterior. 



Parasitical, inhabiting another animal. 



Parietes, walls ; perpendicular sides of the honeycomb ; sides of 

 elevated bodies. 



Patulous, open ; spreading. 



Pearlaceous, having the appearance of pearl. 



Pecten, in Hymenoptera, rigid, incurved setae which arm the 

 exterior margin of the upper part of the base of the valvulss 

 or maxillae. 



Pectinate, comb-shaped ; cut into regular straight segments like 

 the teeth of a comb. See perfoliate, setaceous. 



Pectus, the anterior, inferior portion of the trunk, included be- 

 tween the head and postpectus. 



Pedes, the feet ; this term is applied to the whole limb, consist- 

 ing of femur, tibia, tarsus. 



Pedicellus, the third joint of the antennae, particularly in Hy- 

 menoptera, often forming the pivot, turning in the socket of 

 the scapus, upon which the other articulations, constituting 

 the apex, sit, and by means of which they often form an angle 

 with that part ; it is " le bouton" of Reaumur. 



Pedicle, a pedicellus. 



Peduncle, a stalk or petiole. 



Pedunculated, elevated on a stalk or peduncle. 



Peltate, target-shaped. 

 Pendent, hanging down. 

 Penicilliform, pencil shaped. 



Penis, the genitals of the male, consisting of forceps and phallus. 

 Pennaceous, feathered like the web of a quill. Seeplumous. 



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