i56 



A. E. SHIPLEY 



the figures show, exrept in Ihe matter of size, it is very like the 

 L. subtriquetra and it occurs in the same districts. I am inclined 

 to Ihink that if a Caiman ate an infested Acara the L. piisilla of the 

 latter would grow up into a L. subtriquetra of the former, but there 

 is no proof of this, so 1 include both in this list. 



2. — LlNGUATULA RECURVATA DiCSing (1). 



Synonym. — Pentastomum recurvatum Diesing. 



« Corpus lanceolatum retrorsum attenuatum recur- 

 vatum, apice caudali emargina- 

 tum, ventre planiusculum, dorso 

 convexiusculum, annulato-pli- 

 catum, marginibus crenatum. 

 Caput truncatum. Os ellipticum 

 inter bothria arcuatim disposita, 

 hamulos simplices vaginantia 

 situm. » — Diesing. 

 Longit. fem. 18-27 mm. 



Fig. 2. — Linguatula recurvata Die- 

 sing. — A, entire animal X 3 ; B, 

 anterior end X 6. After Diesing. 



Habitat. — In the frontal 

 sinuses and trachea of Felis onca. 



This species is distinguished 

 from the L. tœnioides by the fact 

 the slightly bifid tail is always curved back in the manner indica- 

 ted. in the figure. Leuckart mentions that tlie form of the body and 

 head also difîer, but it is obvions that the tw^o species are nearly 

 related. In the ripe female the sides of the body do not stand out 

 from the trunk in the finlike manner which obtains in L. tœnioides 

 and L. subtriquetrum. 



3. — LlXGUATULA SUBTRIQUETRA Diesiug. 



Synoxyms. — Pentasloma proboscideum Bremser. 

 Pentastoma subtriquetrum Diesing. 



DiAGNOsis. — (( Corpus subtriquetrum, ventre planiusculo, subel- 

 liptico V. ovato-oblongo, transverse costato-plicatum (marginibus 



(1) Denkschr. Ak. TFiss. Wien., XIl, 1856, p. 31. 



