BY THOMAS G. SLOANB. 311 



Lacordaire's System (1854). 



i. Maxillae terminated by an articulated hook. 



A. Third joint of the maxillary palpi longer than the fourth.* 



First joint of the labial palpi extending feebly beyond the bottom of 



the sinus of the mentum Manticorides. 



First joint of the labial palpi extending strongly beyond this 



sinus Megacephalides. 



B. Third joint of maxillary palpi shorter than the fourth 



Fourth joint of the tarsi entire Cicindelides. 



Fourth joint of tarsi cordiform, at least the anterior Colltrides. 



ii. Maxillae without an articulated hook Ctenostomides. 



Horn's System (1898). 

 (Abbreviated to show Australian tribes.) 



i. Episterna of metathorax small, narrow, furrowed from the front. 



„ 4 i. Ctenostomidce Lacordaire. 



Cicindelid^ alacosternali^ ^- cpjtyrida Chaudoir. 



ii. Episterna of metathorax wide, not furrowed from the front 



Cicindelid^; platysternalije. 



Prosternal sulcus the continuation of pronotal sulcus. 



Outer lobe of maxillae rudimentary, &c iii. Theratidce. 



Outer lobe of maxillae long, biarticulate. Fourth joint of tarsi not 

 widely cordiform. Orbital plane seldom sharply defined. Body fre- 

 quently setose. Basal furrow variable iv. Cicindelidce Lacordaire. 



Prosternal sulcus not the continuation of pronotal sulcus. Orbital plane 

 not defined. 

 Shoulders extending above hind angle of pronotum. Presternum 

 between coxae raised in a curve. 

 Pronotal and proepisternal sulci permanently separated. 

 Tibiae not densely uniformly setose. Basal furrow variable. 

 First joint of labial palpi extending far beyond the tooth of the 

 mentum, second generally much smaller than first. 

 Number and size of the visible abdominal segments often 

 variable, &a v. Megacephalides. 



* Lacordaire speaks of the labial palps as 4-jointed, though he described 

 them thus : — -" Palpes de quatre articles : le premier forme* par leur support 

 qui s'est agrandi et est devenu libre." (Genera, p.l). Horn in the table 

 given below also refers to the basal piece of the palp as its first joint. 

 Ganglbauer describes the labial palps accurately as 3-jointed, but appearing 

 4-jointed owing to the palpigerous piece of the labium becoming free and 

 showing in the sinus of the mentum like the basal joint of the palp (Die 

 Kafe von Mitteleuropa, 1892, p. 6). 



