_Experimental prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): Two hedgehogs were fed cockroaches infested with _Prosthenorchis elegans_ and _P. spirula_. =Erinaceus= sp. _Common name._--Hedgehog. _Natural prey._--Cockroaches, England (Samouelle, 1841; Cowan, 1865). Order CHIROPTERA Family MOLOSSIDAE =Molossus= sp. _Natural prey._--Cockroaches, British Guiana (Beebe, 1925a): The above bat is a common house bat of the area. Order PRIMATES Family LEMURIDAE =Lemur coronatus= Gray _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): The monkey apparently became infested naturally with _Prosthenorchis spirula_ for which _B. germanica_ was the intermediate host in the monkey house. =Lemur fulvus= E. Geoffroy _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): See comment under _Lemur coronatus_. Family LORISIDAE =Loris tardigradus= (Linnaeus) _Synonymy._--_Lemur tardigradus_ [Dr. D. H. Johnson, personal communication, 1957]. _Natural prey._--Cockroaches, on board ship (Cowan, 1865). =Perodicticus potto= (P. L. S. Müller) _Common name._--Potto. _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): See comment under _Lemur coronatus_. _Experimental prey._--Blattidae, East Africa (Pitman, 1931): Both sexes of the potto ate freely of all types of cockroaches. Family TARSIIDAE =Tarsius= sp. _Experimental prey._--Cockroaches, Borneo (Shelford, 1916). Family CEBIDAE =Aotes zonalis= Goldman _Synonymy._--_Aotus_ [Simpson, 1945]. _Common name._--Canal Zone night monkey. _Natural prey._--_Leucophaea maderae_, Panama (Foster and Johnson, 1939): Captive monkeys became naturally infested with _Protospirura muricola_ by eating cockroaches that contained infective larvae of the worm. =Ateles dariensis= Goldman _Common name._--Darien black spider monkey. _Natural prey._--_Leucophaea maderae_, Panama (Foster and Johnson, 1939): See comment under _Aotes zonalis_. =Cebus apella= (Linnaeus) _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): See comment under _Lemur coronatus_. =Cebus capucinus= (Linnaeus) _Common name._--White-faced monkey. _Natural prey._--_Leucophaea maderae_, Panama (Foster and Johnson, 1939): Favorite item of food in the laboratory. See comment under _Aotes zonalis_. =Saimiri sciurea= Linnaeus _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): See comment under _Callithrix chrysoleucos_. Family CALLITHRICIDAE =Callithrix chrysoleucos= (Natterer) _Synonymy._--_Callithrix chrysolevea_ [Johnson, personal communication, 1957]. _Natural prey._--_Blattella germanica_, France (Brumpt and Urbain, 1938): The monkey apparently became infested naturally with _Prosthenorchis elegans_ for which _B. germanica_ was the intermediate host in the monkey house. =Callithrix jacchus= (Linnaeus) _Synonymy._--_Simia jacchus._