61 Did 



Depressors. — "VVmg muscles, attached to the wing- 

 root, outside tlie fulcrum. (L. deprimo, depressum.) 



Derma, Dermis. — The cuticle or skiu. (Gr. denna, 

 the skin, from dero, to flay.) 



Dermal. — Pertaining to the derma. 



Dermata. — (Pupa.) When the prior skbi is 

 retained, and no trace of the situation of limbs 

 is visible. (Gr. derma, the skin.) 



Detonant. — Emitting a sudden noise. (L. de, and 

 tono, to thunder.) 



Deuto. — From the Greek deuteros, second, and 

 used as a prefix. 



Deutocerebrae. — The second segment of the head, 

 the antennal segment, whose appendages 

 develop into feelers, appearing first behind the 

 mouth, but moving as growth proceeds. (Gr. 

 deuteros, second ; and L. cerebrum, bram.) 



Deutocerebon. — The mid-brain, consisting of the 

 olfactory nerve-centres. (Gr. deuteros, second ; 

 and L. cerebrum, brain.) 



Di. — A Greek prefix signifying double or two. 

 (Gr. dis, twice.) 



Dia. — A Greek prefix signifying through. 



Diaphanous. — Transparent, but less purely than 

 hyaline. (Gr. diaphanes.) See Pellucid. 



Dichotomous. — Dividing regularly into pairs. 

 (Gr. dicha, in two parts, and temno, to cut.) 



Didymous. — When a pair of spots, etc., touch, or 

 are confluent ; twin. (Gr. didymos, twin.) 

 See Geminous. 



