167 
COLEOPTEROUS FAMILY PAUSSID.E, 
sively, at which periods a A^apour may be observed to accompany 
each crepitation, attended with a strong and very penetrating 
odour, something like that of nitric acid.” On touching the 
papilla3-like tubercles at the outer angles of the extremity of the 
elytra (giving cover to an elongated appendage of the same 
description, Avhich is attached to the upper exterior margin of the 
abdomen; and which, by the aid of a pin’s point, may be lifted up, 
and in a slight degree outspread, but collapsing immediately the 
impediment is removed). Captain Boys observed, that ''they 
possessed the power of discharging a yelloAvish milky liquid, 
resembling pus in consistency, and which speedily overspread the 
lower part of the elytron, granulating into small egg-shaped grains. 
On repeating the irritation, the same results occuiTed ; and in 
order to be certain of the fact, I tried each elytron tAvice Avith the 
same effect;—and in all these trials, each emission Avas accom¬ 
panied with a faint acidulous odour,” 
Of the species described by Captain Boys, one is stated to 
have been captured on a heap of manure, a second Avas taken by 
sweeping high grass Avith a hoop net, three Avere taken at night, 
having been attracted to the lights ; “another Avas rescued from the 
clutches of a small black ant, Avhich cii'cumstance I notice merely 
because a belief exists that the Paussi inhabit ant-hills and the 
last was found crawling up the w^all of his bathing-room. 
Since the article containing the description of Ceratoderus 
bifasciatus, (aw^cpl. 58, f, 1, p, 37,) Avas published, I haA^e received 
a specimen of that curious insect from my friend Colonel Plearsey, 
by whom it was captured at large during the day-time. 
In the former articles on this family in the present volume, I 
have alluded to the views of Dr. Burmeister as to tha relationship 
of the Paussidse Avith the Carabidse analogous to that Avhich exists 
between the Dyticidae and Gyrinidm (aw^epp. 5, 10, 11, 12, 76, 80.) 
This relationship is considered to be exhibited in the structure of 
the mouth, AA’ings, and indeed in the entire general structure of the 
insect, not excepting the antennse AA’hicli are brought into com¬ 
parison with those of Helluo laticornis, Ozsena orientalis, and some 
species of Morio.^ 
* Captain Boys also, in liis Memoir on the Genus above referred to, has likewise arrived 
at the conclusion that these insects are related to the Carabidse, - approximating in outward 
appearanceto many of that family, possessing also five-jointed tarsi, and possessing, like 
Brachinus, the power of crepitation. 
