ORISMOLOGY. 293 
4<. Obscure (Obscurus). A surface which reflects the 
light but little. — Ex. Pcelobius Hcrmanni. 
5. Opaque (Opacus). A surface which does not re- 
flect the light at all. — Ex. Trox sabulosus, arena- 
rius. Silpha opaca. 
vii. TRANSPARENCE. 
1. Hyaline [Hyalina). The clear transparency of 
glass. — Ex. The Wings of many Neuroptera, Hy- 
menoptera, and Diptera. 
2. Diaphanous (Diaphana). Transparent, but less 
purely than hyaline. Semitransparent. — Ex. The 
Wings of many Coleoptera. 
S. Adiaphanous {Adiaphana). Which does not trans- 
mit the light at all. — Ex. Elytra of Coleoptera. 
viii. PAINTING. 
1 . Atom (Atomus). A very minute dot. 
2. Irrorate (Irrorata). Sprinkled with atoms, as the 
earth with dew. — Ex. Onthophagus Vacca. Pa- 
pilio Paris. 
3. Gutta (Gutta*). A roundish dot intermediate in 
size between an atom and a macula. 
4. Guttate (Gtittata). Sprinkled with guttte. — Ex. 
Coccinella. 
5. Macula ( Macula). A larger indeterminately shaped 
spot. 
a Linnc in Coccinella has employed the term Gutta for a white or 
yellow spot in a darker ground, and Puslula for a red spot in a black 
ground. We thought one term sufficient to express spots bigger 
than atoms. 
