110 
Psyche 
[June 
cribed as new some thirteen species, six of which are from North 
American localities, one from Mexico, one from Cuba, three 
from South America, and two from tropical Africa. The des- 
criptions, with few exceptions, appeared first in “0 Brazil- 
Medico,” a periodical published in Rio de Janeiro, and inaccessible 
to the great majority of entomologists in this country; but 
they are transcribed in full in Neiva’s “Revisao.” A copy of 
this work has recently come into my hands, and I shall review 
it here. 
After a brief discussion of the general habits of the Redu- 
viidse, and of the hsematophagous forms in particular, Dr. Neiva 
takes up the affinities of the genus Triatoma. He finds that the 
species of this genus, as it was formerly understood, intergrade 
with those of the genus Lamus Stal, and therefore places the 
latter as a synonym of Triatoma. He also found, on examining 
Stabs type of Behninus rugulosus, that it has ocelli, so he likewise 
reduces Belminus to a synonym, saying that this genus was 
founded on the lack of ocelli: but he makes no mention of the 
other (and equally important) characters on which Stal based 
the genus, and I feel that, despite Neiva’s opinion, Belminus and 
Triatoma must be kept distinct for the present. Panstrongylus 
guentheri Berg is, according to Neiva, very closely allied to the 
African species of Triatoma that he had described a few years 
before; and therefore Panstrongylus too is dropped from the 
list of valid genera. Neiva’s remarks on the genus Eratyrus 
Stal are very indefinite, and lead me to believe that he was 
doubtful as to its status. 
Some twelve pages are then devoted to the biology of the 
forms which have been studied. Neiva concludes that the 
species of Triatoma are strictly hsematophagous, and take their 
food either directly from some warm-blooded host or from other 
ectoparasites, such as the bedbug or other Reduviidse, which 
have fed recently. Oviposition begins within thirty days after 
mating; a single female lays from 160 to 220 eggs, which are 
deposited in small masses containing from 1 to 45 ova. The eggs 
hatch in from 8 to 16 days, and the nymphs begin to feed three or 
four days later. The length of the life-cycle varies in the different 
