450 MR. PERCY I. LATHY ON [Mar. 15, 



portal system). Tn Iguana there are two such veins and in 

 Tiliq'ua thi-ee. 



(6) Iguana cliifers from both Tiliqtia and Varanus in possessing 

 dorsal parieto-hepatic veins which arise from both sides of the 

 vertebral column. In Tiliqua and Varamis only the right vein 

 is present, which enters the liver close to where it is perforated 

 posteriorly by the vena cava. In Tiliqua this vessel receives 

 intercostal branches (?) from the left side as well as from the right 

 which cross the vertebral column superficially ; these are not 

 present in Varamcs. The left dorsal parieto-hepatic vein of 

 Iguana reaches the liver by way of a venous plexus on the 

 stomach and the gastro- hepatic veins. 



(7) The lateral abdominal vein, from where it joins the root 

 of the anterior abdominal to a point anterior to this where it 

 becomes defective, is very shoi-t in Iguana as contrasted with 

 Tiliqua. In none of the types which I have examined is this 

 vein continuous from one enrl of the body to the other as it 

 appears to be (according to Hochstetter) in Lacerta. 



(8) Iguana is to be distinguished from Tiliqua (and possibly 

 from Varamts) by the more complex system of suprai-enal portals ; 

 there are two sets of these vessels instead of only one. 



(9) The two posterior of the oviducal veins in Iguana are con- 

 nected each of them with one of the aiferent veins of the kidney. 



5. A CoDtrihntion towards the Knowledore of the Lepi- 

 doptera-Rhopalocera of Dominica, B.W.I. By Percy 

 - I. Lathy, F.Z.S., F.E..S. 



[Received March 5, 1904.] 



[The complete account of the new species described in this communication 

 appears here ; hut as the names and preliminary diajjnoses were published in the 

 ' Abstract,' such species are distinguished by being underlined. — EDiToa.] 



In the ' Proceedings ' of the Zoological Society for 1884 

 Messrs. Godman and Salvin give a list of the Butterflies collected 

 in Dominica by Mr. G. French Angas. This list contains 27 

 species, three being described as new, one undetermined, since 

 described by the same aiithors (P. Z. S. 1896, p. 519), and one 

 ti-eated as identical with a Cuban form tlu'ough want of material. 



In the present paper I am able to add 12 species to the list, 

 three of which are new to science, and to differentiate between 

 the Cuban and Dominican Hesperid. 



I am indebted to Messrs. Agar and Allport for the material 

 received. 



Pyrameis cardui. 



Papilio cardui Linn. Syst. ISTat. i. p. 774. 



Two very bad specimens of this cosmopolitan species were 

 obtained. 



