Cocc.inellidce aplddipliayce.] CLAVICOUNIA. 159 



A. Upper surface glabrous HYPEBASPIS, Redt. 



B. Upper surface plainly pubescent ScYMNUS, Kug. 



ii. Clypeus at sides extending far in front of the eyes, aud 



covering the base of the antennso. 



1. Upper surface plainly pubescent PLATYNASPIS, Redt. 



2. Upper surface glabrous. 



A. Anterior tibiaa with a tooth on outer margin ; 



labrum scarcely visible CHILOCORUS, Leach. 



B. Anterior tibire without tooth on outer margin ; 



labrum distinct EXOCHOMUS, Redt. 



II. Anterior coxal cavities open behind ; upper surface 



pubescent ; punctuation of elytra double, 

 i. Punctuation of elytra irregular ; base of thorax bor- 

 dered; form subhemispherical RHIZOBTTJS, Steph. 



ii. Large punctures of elytra arranged in rows; base of 



thorax not bordered ; form elougate-oval COCCIDULA, Kug. 



HIPPODA2MXA, Mulsant. 



This genus contains about twenty species, which are widely distributed 

 in Europe and North America ; one or two are found in Northern Asia ; 

 they are, as a rule, of a more oblong and looser form than the greater 

 part of the other Coccinellidas. H. variegata is a very variable species, 

 and some of its varieties appear to be found in Northern Africa, Senegal, 

 and India, as well as in more northern climates. 



I. First joint of tarsi not dilated in male ; size 

 larger ; elytra orange-yellow, with a common spot 



at scutellum, and six spots on each black . . . H. TREDECIMPUNCTATA, L. 

 II. First joint of anterior and intermediate tarsi 

 dilated in male (Adonia, Muls. ); size smaller; 



elytra reddish, with variable black spots on each . H. VARIEGATA, Goeze ; 



(mutdbilis, Scriba). 



H. 13-punctata, L. (tibialis, Say.). Oblong, rather depressed ; 

 head black with front yellow ; thorax with sides strongly rounded, black 

 with the anterior and lateral borders yellow, the latter broadly so and 

 usually furnished with a black spot in middle of each ; elytra yellow or 

 orange-yellow, with a common spot at base of suture, which is sometimes 

 wanting, and six spots on each black ; legs black, with the tibiae and 

 usually the greater part of the tarsi yellow. L. 4|-7 mm. 



Male with the first joint of the anterior tarsi slightly furrowed longi- 

 tudinally, and the fifth segment of abdomen emarginate at apex. 



Marshy places, on reeds, &c., also in flood refuse ; very local, and, as a rule, rare; 

 Battersea (Stephens); Suffolk, in flood refuse, abundant (VV. Garneys) ; Deal; 

 Hastings; near Lancaster on Arundo phragmites ; Northumberland and Durham 

 districts, Meldon Park, Twizell, and Durham; Scotland, Lowlands, rare, Solway aud 

 Forth districts ; Ireland, near Belfast and Portmarnock ; the species is found through- 

 out Siberia and occurs in North America as tibialis, Say.; it is very variable as 

 regards the size of the spots of thorax and elytra. 



XX. variegata. Goeze (mutabilis, Scriba; Adonia mutabilis, Mill- 



