110 Psyche [June 



cribecl as new some thirteen species, six of which are from North 

 American locahties, 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 countrj^; 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- 

 viidce, 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 

 Stal's type of Behninus nigiilosus, that it has ocelli, so he likewise 

 reduces Belminiis 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, Belniimis and 

 Triatoma must be kept distinct for the present. Panstrongylus 

 giientheri 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 l^elieve that he was 

 doubtful as to its status. 



Some twelve pages are then devoted to the biolog}' 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 Reduviida?, 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 



