803 



RACE. A particular breed. 



RACEMOUS. Growing in racemes or clusters. 



RADIAL. Pertaining to the radius or to the 

 fore- arm of the human body; as, the raduii 

 muscles. 



RADIATA. Animals in which the organs of 

 sensation and motion are disposed like 

 rays round a centre ; the lowest primary 

 division of the animal kingdom. 



RADIATE. When a dot, spot, &c. appears to 

 send forth rays, as the large blue area com- 

 mon to all the wings of Papilio Ulysses. 



RADIATED (areolets). When the areolets 

 are chiefly formed by radiating longitudi- 

 nal nervures. 



RADICATED (shell). When fixed by the 

 base to another body. 



RADIUS. In entomology, a single subdivision 

 of a dit/itate wing ; i. e. when the wings 

 are cleft to the base into several subdivi- 

 sions. 



RAM. The male of the sheep or ovine genus. 



RAMIFICATION. A shooting out into branches. 



RAMIFY. To shoot into branches. 



RAMOSE. Spread out into branches. An- 

 tennte are so called when setaceous or 

 moniliform, but having long branches from 

 several of the joints. 



RAPACIOUS. Subsisting on prey or animals 

 seized by force. 



RAREFY. To make thin and porous, or less 

 dense. 



REANIMATE. To resuscitate ; to restore to 

 life and action. 



RECLINED. Leaning towards any thing as 

 if to repose upon it. 



RECONDITE. When the head of an insect is 

 wholly covered and sheltered by the shield 

 of the thorax. 



RECREMENT. Superfluous matter separated 

 from that which is useful. 



RECREMENTITIOUS. Consisting of super- 

 fluous matter separated from that which 

 is valuable. 



RECTANGULAR. Having right angles. 



RECTUM. The third and last of the large 

 intestines. 



RECUMBENT. Leaning or reposing upon any 

 thing. 



RECURRENT. When a nervure, or a branch 

 of it, after running towards the apex of 

 the wing, turns back and runs towards 

 the base. 



RECURVED. RECURVATED. Turned or 

 curved outwards. 



RECURVIROSTRAL. Pertaining to those birds 

 whose beak or bill bends upwards. 



REFRACTED. Abruptly bent, as if broken. 



REFLECTED. Bent back or thrown back- 

 wards. 



REFLEX. REFLEXED. Turned or bent back 

 or upwards. 



REFLUENT. Flowing back ; as, refluent 

 blood. 



REFRIGERATE. To allay the heat of ; to 

 refresh. 



REGION. A large tract or space of country. 



REGURGITATED. Swallowed a second time ; 

 thrown or poured back. 



REMASTICATE To chew over and over, as 

 in chewing the cud. 



RENASCENT. Springing or rising into being 

 again. 



RENIFORM. Kidney-shnped. 



RENICULUS. A small kidney-shaped spot, 

 as seen in the wings of some nocturnal 

 Lepidoptera. 



RENNET. The concreted milk found in the 

 stomach of a sucking quadruped, particu- 

 larly of the calf. 



REPAND. Cut into very slight situations, 

 so as to run in a serpentine direction. 



REPLETION. Superabundant fulness. 



REPLICATED. Folded or plaited, so as to 

 form a groove or channel. 



REPTILIA. The class of vertebrate .animals 

 with imperfect respiration and cold blood. 

 They constitute an order of the class Am- 

 phibia, including all such as are furnished 

 with limbs or articulated extremities, as 

 tortoises, lizards, and frogs. 



RESILIENT. Leaping or starting back ; re- 

 bounding. 



RESPLENDENT. Reflecting the light in- 

 tensely. 



RESUPINB. When an object lies upon its 

 back. 



RETE HUCOSUM. The cellular layer between 

 the true skin and the scarf skin, which is 

 the seat of the peculiar colour of the skin. 



RETICULATE. RETICULATED. Formed like 

 a piece of net-work ; having distinct veins 

 or lines which intersect each other in va- 

 rious directions like the meshes of a net. 

 Applied to the areolets of insects, when 

 they are extremely small and infinitely 

 numerous. 



RETIFORM. Composed of crossing lines and 

 interstices ; as, the ret/form coat of the 

 eye. 



RETRACTED. When the head of an insect 

 is wholly withdrawn within the trunk. 



RETRACTILE. Capable of being drawn 

 backwards. The claws of the cat tribe. 

 When an insect can at pleasure exsert its 

 head, or withdraw it within the trunk. 



RETROFLECTED. Bent backwards. 



RETROGRADE. Going or moving backwards. 



RETROMINGENT. Discharging the urine 

 backwards. 



RETRORSE. RETROUSED. Bent back. 



RETUSE. Ending in an obtuse sinus ; as, 

 when the inner whorls of a spiral shell 

 appear to have been pressed into the body 

 of the shell, and the apex is below the 

 level of the last whorl. 



REVERSE. When an object is viewed with 

 its anus towards you. 



REVERSED. The spire of a shell is said to j 

 be reversed or sinisti-al, when the volutions 

 turn to the left,or the opposite way to that j 

 of a common cork-screw. 



REVIVESCENT. Regaining or restoring life 

 and action. 



REVOLUTE. Rolled outwards or backwards. 



RiioiiKiFOKM. When the horizontal section 

 is rhomboidal. 



RIBBED. Having longitudinal or transverse 

 ridges. 



RIGID. Hard and stiff, so as not to bend or 

 yield to pressure. 



RIMA. A chink or interstice. 



RIMOSE. When any surface possesses nu- 

 merous minute narrow excavations, run- 

 ning into each other ; clunky, like the bark 

 of a tree. 



