495. 

 HYDROCAMPA STRATIOTATA. 



The ringed China-mark. 



Type of the Genus, Geometra Stratiotata Linn. 

 Hydrocampa Lat., Goda., Curt. — Nymphula Schr., Och. — Pyralis 

 Hub., Hatv. — Geometra Linn. — Phalsena Fab. 

 Antennae alike in both sexes, inserted close to the eyes on the 

 crown of the head (1), nearly as long as the body, slender, seta- 

 ceous, composed of numerous oblong joints, clothed with scales 

 and ciliated beneath, sometimes with each joint tasselled or 

 knotted beyond the middle to the apex, where they are com- 

 pressed (1 «). 



Maxillce considerably shorter than the maxillary palpi, composed 

 of 2 filiform threads (3). Palpi small, porrected, clothed with 

 scales (7 a), 4-jointed, 3 first joints stout, somewhat cup-shaped, 

 4th smaller and globose (3 a). 



Labial Palpi longer than the head, porrected, a little curved and 



attenuated, clothed with scales (4), triarticulate, basal joint a 



little the stoutest, somewhat obovate, 2nd longer, subelhptic, 



3rd slender, as long as the first and nearly naked (4 a). 



Males smaller than the females. Head small, subglobose : eyes lateral, 



globose and prominent : ocelli two (7, head in profile) . Thorax 



small and globose. Abdomen long, slender, and tufted at the apex 



in the male, conical in the female. Wings forming a triangle and 



depressed when at rest, superior rather long, narrow and lanceolate 



in the female ; inferior ovate-trigonate. Legs long and slender. 



Thighs short, especially/ the posterior : Tibise, anterior very short, 



with an internal sjnne, 4 posterior long and terminated by lo?ig spurs, 



the hinder pair having 2 also at the middle (Sf) : tarsi very long and 



5 -jointed, basal joint the longest, the following gradually decreasing 



in length : claws and pulvilli very minute. 



Larvae with 6 pectoral, 8 abdominal, and 2 anal feet, generally smooth. 



Stratiotata Li7in. F. S. 341. 1300. — Curt. Guide, Gen. 974. 5. — 

 paludata Fab. 



Male white, antennae knotted towards the apex ; abdomen with 

 the base of each segment blackish : superior wings obtuse, va- 

 riegated with brown, forming an unequal oblique fascia across 

 the centre, the further margin edged with white, a white stripe 

 crenated by a brown line near to the posterior margin and a 

 Avhite dot on the disc in a dark ring ; cilia spotted with darker 

 brown, and white at the base ; inferior with 2 or 3 interrupted 

 brown waved lines across the middle, and a fine one near to the 

 margin ; cilia spotted brown at the base. Female dirty ochre, 

 superior wings more lanceolate, with a small dark ring on the 

 disk, and a faint oblique line beyond it : inferior wings more or 

 less white, with the waved line below the centre generally broad, 

 cilia ochreous. 



In the Author's and other Cabinets. 



