BY THOMAS G. SLOANE. 313 



Coxae. — In the Cicindelidse the anterior coxse project strongly 

 beyond the intercoxal piece of the prosternum, and have on their 

 inner side a small tubercle which is received into a sinuosity of 

 the coxal cavities (figs. 39, 40). In the Carabidse the coxse do 

 not so project above the intercoxal part of the prosternum, and 

 are without the tubercle of the inner side. 



Tactile seta;.* — Among the Carabidse and Cicindelidse certain 

 hairs are found which rise singly from pores in the chitinous 

 skeleton. Considerable importance, for the purposes of classifica- 

 tion, has been attributed to many of tliese setse in the Carabidse; 

 but I have not met with any notice of their use in the 

 Cicindelidse. 



In the Australian Cicindelidse the following setoe at least have 

 some taxonomic value — (l)The supraorbital setse of the head (one 

 seta above the eye in Rhysopleura, Distypsidera, and Nickerlea; 

 two in Megacephala and Cicindela. (2)The juxta-antennal seta 

 on each side of the clypeus (wanting in the genus Cicindela alone 

 in our fauna). (3)The setse of the labrum {marginal in Rhyso- 

 pleura, Distypsidera, and Nickerlea; submarginal in Megacephala 

 and Cicindela]). (4)The coxal tactile setse (present always 

 throughout the Australian Cicindelidse on all the coxse except 

 in the genus Megacephala in which the anterior coxce are without 

 setce). (5)The seta on each of the four anterior trochanters, 

 which are wanting in the genus Megacephala alone in our fauna J 

 {the posterior trochanters are always without setse). 



* These tactile seta; have nothing to do with the pubescence or bristles 

 always to be found on some part of the body or coxae throughout the genus 

 Cicindela. For their use in the classification of the Carabidas, cf. Horn, 

 Trans, Amer. Ent. Soc. 1881, ix.; Sharp, Fauna Hawaiiensis, Col. Carab Hi. 

 Pt. 3, p. 182(1903); Sloane, these Proceedings, 1904, xxix. p. 106. 



t The New Caledonian genus Caledonica has the large Distypsidera-like 

 form of the labrum, but with only four setae, the anterior pair of which are 

 submarginal. This character, with the presence of two fully developed 

 supraorbital setae, seems to indicate that the phylogenetic position of 

 Caledonica is between Distypsidera and the Cicindeke spuria?.. 



X I have noticed that in the Papuan fiinerata-gromp of the genus Cicindela 

 none of the trochanters have a tactile seta. 



